Attachment 577750 Details for Bug 812943 – strace of "pilot-dlpsh -p usb: -c user"

strace of "pilot-dlpsh -p usb: -c user"

dlpsh.txt (text/plain), 185.18 KB, created by Sean Sheedy on 2012-04-16 16:05:11 UTC

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Creator: Sean Sheedy

Created: 2012-04-16 16:05:11 UTC

Size: 185.18 KB

patch

obsolete

>execve("/usr/bin/pilot-dlpsh", ["pilot-dlpsh", "-p", "usb:", "-c", "user"], [/* 56 vars */]) = 0
>brk(0)                                  = 0x1da8000
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff3000
>access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
>open("/etc/ld.so.cache", O_RDONLY)      = 3
>fstat(3, {st_mode=S_IFREG|0644, st_size=158985, ...}) = 0
>mmap(NULL, 158985, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7faa3efcc000
>close(3)                                = 0
>open("/lib64/libreadline.so.6", O_RDONLY) = 3
>read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\20M\1\0\0\0\0\0"..., 832) = 832
>fstat(3, {st_mode=S_IFREG|0755, st_size=274616, ...}) = 0
>mmap(NULL, 2375464, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7faa3eb92000
>mprotect(0x7faa3ebce000, 2093056, PROT_NONE) = 0
>mmap(0x7faa3edcd000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3b000) = 0x7faa3edcd000
>mmap(0x7faa3edd5000, 3880, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7faa3edd5000
>close(3)                                = 0
>open("/usr/lib64/libpisock.so.9", O_RDONLY) = 3
>read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260\223\0\0\0\0\0\0"..., 832) = 832
>fstat(3, {st_mode=S_IFREG|0755, st_size=256976, ...}) = 0
>mmap(NULL, 2368792, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7faa3e94f000
>mprotect(0x7faa3e98a000, 2093056, PROT_NONE) = 0
>mmap(0x7faa3eb89000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3a000) = 0x7faa3eb89000
>mmap(0x7faa3eb8e000, 13592, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7faa3eb8e000
>close(3)                                = 0
>open("/lib64/libc.so.6", O_RDONLY)      = 3
>read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p\24\2\0\0\0\0\0"..., 832) = 832
>fstat(3, {st_mode=S_IFREG|0755, st_size=1946112, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3efcb000
>mmap(NULL, 3773688, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7faa3e5b5000
>mprotect(0x7faa3e745000, 2093056, PROT_NONE) = 0
>mmap(0x7faa3e944000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18f000) = 0x7faa3e944000
>mmap(0x7faa3e949000, 21752, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7faa3e949000
>close(3)                                = 0
>open("/lib64/libtinfo.so.5", O_RDONLY)  = 3
>read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\313\0\0\0\0\0\0"..., 832) = 832
>fstat(3, {st_mode=S_IFREG|0755, st_size=158408, ...}) = 0
>mmap(NULL, 2255136, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7faa3e38e000
>mprotect(0x7faa3e3b1000, 2093056, PROT_NONE) = 0
>mmap(0x7faa3e5b0000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22000) = 0x7faa3e5b0000
>close(3)                                = 0
>open("/lib64/libusb-0.1.so.4", O_RDONLY) = 3
>read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 \26\0\0\0\0\0\0"..., 832) = 832
>fstat(3, {st_mode=S_IFREG|0755, st_size=17960, ...}) = 0
>mmap(NULL, 2113224, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7faa3e18a000
>mprotect(0x7faa3e18e000, 2093056, PROT_NONE) = 0
>mmap(0x7faa3e38d000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7faa3e38d000
>close(3)                                = 0
>open("/lib64/libpthread.so.0", O_RDONLY) = 3
>read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300i\0\0\0\0\0\0"..., 832) = 832
>fstat(3, {st_mode=S_IFREG|0755, st_size=137576, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3efca000
>mmap(NULL, 2204664, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7faa3df6f000
>mprotect(0x7faa3df85000, 2093056, PROT_NONE) = 0
>mmap(0x7faa3e184000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x7faa3e184000
>mmap(0x7faa3e186000, 13304, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7faa3e186000
>close(3)                                = 0
>open("/usr/lib64/libbluetooth.so.3", O_RDONLY) = 3
>read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340n\0\0\0\0\0\0"..., 832) = 832
>fstat(3, {st_mode=S_IFREG|0755, st_size=109136, ...}) = 0
>mmap(NULL, 2204304, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7faa3dd54000
>mprotect(0x7faa3dd6d000, 2093056, PROT_NONE) = 0
>mmap(0x7faa3df6c000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18000) = 0x7faa3df6c000
>close(3)                                = 0
>open("/lib64/libusb-1.0.so.0", O_RDONLY) = 3
>read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 &\0\0\0\0\0\0"..., 832) = 832
>fstat(3, {st_mode=S_IFREG|0755, st_size=53832, ...}) = 0
>mmap(NULL, 2149104, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7faa3db47000
>mprotect(0x7faa3db54000, 2093056, PROT_NONE) = 0
>mmap(0x7faa3dd53000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xc000) = 0x7faa3dd53000
>close(3)                                = 0
>open("/lib64/librt.so.1", O_RDONLY)     = 3
>read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`!\0\0\0\0\0\0"..., 832) = 832
>fstat(3, {st_mode=S_IFREG|0755, st_size=44200, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3efc9000
>mmap(NULL, 2128968, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7faa3d93f000
>mprotect(0x7faa3d946000, 2093056, PROT_NONE) = 0
>mmap(0x7faa3db45000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7faa3db45000
>close(3)                                = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3efc8000
>mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3efc6000
>arch_prctl(ARCH_SET_FS, 0x7faa3efc6720) = 0
>mprotect(0x7faa3db45000, 4096, PROT_READ) = 0
>mprotect(0x7faa3e184000, 4096, PROT_READ) = 0
>mprotect(0x7faa3e944000, 16384, PROT_READ) = 0
>mprotect(0x7faa3eff4000, 4096, PROT_READ) = 0
>munmap(0x7faa3efcc000, 158985)          = 0
>set_tid_address(0x7faa3efc69f0)         = 11386
>set_robust_list(0x7faa3efc6a00, 0x18)   = 0
>rt_sigaction(SIGRTMIN, {0x7faa3df75510, [], SA_RESTORER|SA_SIGINFO, 0x7faa3df7dee0}, NULL, 8) = 0
>rt_sigaction(SIGRT_1, {0x7faa3df755a0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7faa3df7dee0}, NULL, 8) = 0
>rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
>getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
>brk(0)                                  = 0x1da8000
>brk(0x1dc9000)                          = 0x1dc9000
>brk(0)                                  = 0x1dc9000
>open("/dev/null", O_RDWR)               = 3
>open("/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
>getdents(4, /* 8 entries */, 32768)     = 192
>close(4)                                = 0
>uname({sys="Linux", node="sean-netbook.osioda.org", ...}) = 0
>stat("/sys/bus/usb/devices", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
>pipe([4, 5])                            = 0
>timerfd_create(CLOCK_MONOTONIC, 0x800 /* TFD_??? */) = 6
>ioctl(1, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, 0x7fff87ceff88) = -1 EINVAL (Invalid argument)
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>stat("/sys/bus/usb/devices/usb1/descriptors", {st_mode=S_IFREG|0444, st_size=65553, ...}) = 0
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/descriptors", O_RDONLY) = 8
>read(8, "\22\1\0\2\t\0\0@k\35\2\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/descriptors", O_RDONLY) = 8
>read(8, "\22\1\0\2\t\0\0@k\35\2\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/descriptors", O_RDONLY) = 8
>read(8, "\22\1\0\2\357\2\1@\362\4u\261W\23\2\1\3\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/descriptors", O_RDONLY) = 8
>read(8, "\22\1\0\2\0\0\0\10m\4+\305\1\22\1\2\0\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\0\0\0\0200\10a\0\0\2\1\2\5\1", 18) = 18
>close(8)                                = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/descriptors", O_RDONLY) = 8
>read(8, "\22\1\0\2\t\0\0@k\35\2\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/descriptors", O_RDONLY) = 8
>read(8, "\22\1\0\2\t\0\0@k\35\2\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/descriptors", O_RDONLY) = 8
>read(8, "\22\1\0\2\357\2\1@\362\4u\261W\23\2\1\3\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/descriptors", O_RDONLY) = 8
>read(8, "\22\1\0\2\0\0\0\10m\4+\305\1\22\1\2\0\1", 18) = 18
>close(8)                                = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\0\0\0\0200\10a\0\0\2\1\2\5\1", 18) = 18
>close(8)                                = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices/usb1/descriptors", O_RDONLY) = 7
>read(7, "\22\1\0\2\t\0\0@k\35\2\0\2\3\3\2\1\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/001/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340", 8)       = 8
>close(7)                                = 0
>open("/dev/bus/usb/001/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340\0\t\4\0\0\1\t\0\0\0\7\5\201\3\4\0\f", 25) = 25
>close(7)                                = 0
>open("/sys/bus/usb/devices/2-5/descriptors", O_RDONLY) = 7
>read(7, "\22\1\0\2\357\2\1@\362\4u\261W\23\2\1\3\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/002/003", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\343\1\2\1\0\200", 8)      = 8
>close(7)                                = 0
>open("/dev/bus/usb/002/003", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\343\1\2\1\0\2001\10\v\0\2\16\3\0\5\t\4\0\0\1\16\1\0\5\r$\1\0\1g"..., 483) = 483
>close(7)                                = 0
>open("/sys/bus/usb/devices/usb2/descriptors", O_RDONLY) = 7
>read(7, "\22\1\0\2\t\0\0@k\35\2\0\2\3\3\2\1\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/002/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340", 8)       = 8
>close(7)                                = 0
>open("/dev/bus/usb/002/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340\0\t\4\0\0\1\t\0\0\0\7\5\201\3\4\0\f", 25) = 25
>close(7)                                = 0
>open("/sys/bus/usb/devices/3-1/descriptors", O_RDONLY) = 7
>read(7, "\22\1\20\1\0\0\0\0200\10a\0\0\2\1\2\5\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2.\0\1\1\0\300", 8)         = 8
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2.\0\1\1\0\300\372\t\4\0\0\4\377\0\0\0\7\5\201\2@\0\n\7\5\2\2@\0\0"..., 46) = 46
>close(7)                                = 0
>open("/sys/bus/usb/devices/usb3/descriptors", O_RDONLY) = 7
>read(7, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/003/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340", 8)       = 8
>close(7)                                = 0
>open("/dev/bus/usb/003/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340\0\t\4\0\0\1\t\0\0\0\7\5\201\3\2\0\377", 25) = 25
>close(7)                                = 0
>open("/sys/bus/usb/devices/4-2/descriptors", O_RDONLY) = 7
>read(7, "\22\1\0\2\0\0\0\10m\4+\305\1\22\1\2\0\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/004/002", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2T\0\3\1\4\240", 8)         = 8
>close(7)                                = 0
>open("/dev/bus/usb/004/002", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2T\0\3\1\4\2401\t\4\0\0\1\3\1\1\0\t!\21\1\0\1\";\0\7\5\201\3\10"..., 84) = 84
>close(7)                                = 0
>open("/sys/bus/usb/devices/usb4/descriptors", O_RDONLY) = 7
>read(7, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/004/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340", 8)       = 8
>close(7)                                = 0
>open("/dev/bus/usb/004/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340\0\t\4\0\0\1\t\0\0\0\7\5\201\3\2\0\377", 25) = 25
>close(7)                                = 0
>open("/sys/bus/usb/devices/usb5/descriptors", O_RDONLY) = 7
>read(7, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/005/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340", 8)       = 8
>close(7)                                = 0
>open("/dev/bus/usb/005/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340\0\t\4\0\0\1\t\0\0\0\7\5\201\3\2\0\377", 25) = 25
>close(7)                                = 0
>open("/sys/bus/usb/devices/usb6/descriptors", O_RDONLY) = 7
>read(7, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/006/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340", 8)       = 8
>close(7)                                = 0
>open("/dev/bus/usb/006/001", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2\31\0\1\1\0\340\0\t\4\0\0\1\t\0\0\0\7\5\201\3\2\0\377", 25) = 25
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db6e10) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "24\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/dev/bus/usb/003/024", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db9520) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 21 entries */, 32768)    = 592
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 21 entries */, 32768)    = 592
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "25\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\0\0\0\0200\10a\0\0\2\1\2\5\1", 18) = 18
>close(8)                                = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "25\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\0\0\0\0200\10a\0\0\2\1\2\5\1", 18) = 18
>close(8)                                = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices/3-1/descriptors", O_RDONLY) = 7
>read(7, "\22\1\20\1\0\0\0\0200\10a\0\0\2\1\2\5\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/003/025", O_RDONLY)  = -1 EACCES (Permission denied)
>nanosleep({0, 500000000}, NULL)         = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "25\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\0\0\0\0200\10a\0\0\2\1\2\5\1", 18) = 18
>close(8)                                = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 7
>getdents(7, /* 23 entries */, 32768)    = 648
>open("/sys/bus/usb/devices/usb1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "5\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "6\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "1\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/2-5/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "4\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/4-2/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "2\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/busnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "3\n", 4096)                    = 2
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/devnum", O_RDONLY) = 8
>fstat(8, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
>mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faa3eff2000
>read(8, "25\n", 4096)                   = 3
>close(8)                                = 0
>munmap(0x7faa3eff2000, 4096)            = 0
>open("/sys/bus/usb/devices/3-1/descriptors", O_RDONLY) = 8
>read(8, "\22\1\20\1\0\0\0\0200\10a\0\0\2\1\2\5\1", 18) = 18
>close(8)                                = 0
>getdents(7, /* 0 entries */, 32768)     = 0
>close(7)                                = 0
>open("/sys/bus/usb/devices/3-1/descriptors", O_RDONLY) = 7
>read(7, "\22\1\20\1\0\0\0\0200\10a\0\0\2\1\2\5\1", 18) = 18
>close(7)                                = 0
>open("/dev/bus/usb/003/025", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2.\0\1\1\0\300", 8)         = 8
>close(7)                                = 0
>open("/dev/bus/usb/003/025", O_RDONLY)  = 7
>lseek(7, 18, SEEK_SET)                  = 18
>read(7, "\t\2.\0\1\1\0\300\372\t\4\0\0\4\377\0\0\0\7\5\201\2@\0\n\7\5\2\2@\0\0"..., 46) = 46
>close(7)                                = 0
>open("/dev/bus/usb/003/025", O_RDWR)    = 7
>write(5, "\1", 1)                       = 1
>read(4, "\1", 1)                        = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db24d0) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db24d0) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db24d0) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>ioctl(7, USBDEVFS_CLAIMINTERFACE, 0x7fff87cefe7c) = 0
>mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7faa3d13e000
>mprotect(0x7faa3d13e000, 4096, PROT_NONE) = 0
>clone(child_stack=0x7faa3d93dfd0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7faa3d93e9d0, tls=0x7faa3d93e700, child_tidptr=0x7faa3d93e9d0) = 11392
>futex(0x7faa3eb914a4, FUTEX_WAIT_PRIVATE, 1, NULL) = 0
>futex(0x7faa3eb91460, FUTEX_WAKE_PRIVATE, 1) = 0
>futex(0x7faa3eb914a4, FUTEX_WAIT_PRIVATE, 3, NULL) = 0
>futex(0x7faa3eb91460, FUTEX_WAIT_PRIVATE, 2, NULL) = 0
>futex(0x7faa3eb91460, FUTEX_WAKE_PRIVATE, 1) = 0
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db40b0) = 0
>timerfd_settime(6, TFD_TIMER_ABSTIME, {it_interval={0, 0}, it_value={7924, 987740000}}, NULL) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefd48) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>futex(0x1da8a14, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x1da89e8, 2) = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db40b0) = 0
>timerfd_settime(6, TFD_TIMER_ABSTIME, {it_interval={0, 0}, it_value={7924, 988575000}}, NULL) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefd48) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>futex(0x1da8a14, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x1da89e8, 4) = 1
>futex(0x7faa3eb914a4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 5, {1334592257, 605193000}, ffffffff) = 0
>futex(0x7faa3eb91460, FUTEX_WAKE_PRIVATE, 1) = 0
>futex(0x7faa3eb914a4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 7, {1334592257, 634993000}, ffffffff) = 0
>futex(0x7faa3eb91460, FUTEX_WAKE_PRIVATE, 1) = 0
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db40b0) = 0
>timerfd_settime(6, TFD_TIMER_ABSTIME, {it_interval={0, 0}, it_value={7925, 29621000}}, NULL) = 0
>futex(0x1da8a14, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 5, {1334592287, 645317440}, ffffffff) = 0
>futex(0x1da89e8, FUTEX_WAKE_PRIVATE, 1) = 0
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db40b0) = 0
>timerfd_settime(6, TFD_TIMER_ABSTIME, {it_interval={0, 0}, it_value={7925, 30472000}}, NULL) = 0
>futex(0x1da8a14, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 7, {1334592287, 646133179}, ffffffff) = 0
>futex(0x1da89e8, FUTEX_WAKE_PRIVATE, 1) = 0
>futex(0x7faa3eb914a4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 9, {1334592257, 646978000}, ffffffff) = 0
>futex(0x7faa3eb91460, FUTEX_WAKE_PRIVATE, 1) = 0
>futex(0x7faa3eb914a4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 11, {1334592257, 685023000}, ffffffff) = 0
>futex(0x7faa3eb91460, FUTEX_WAIT_PRIVATE, 2, NULL) = 0
>futex(0x7faa3eb91460, FUTEX_WAKE_PRIVATE, 1) = 0
>ioctl(1, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, 0x7fff87ceff88) = -1 EINVAL (Invalid argument)
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db24d0) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>futex(0x1da8a14, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x1da89e8, 10) = 1
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db24d0) = 0
>poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=7, events=POLLOUT}], 3, 60000) = 1 ([{fd=7, revents=POLLOUT}])
>ioctl(7, USBDEVFS_REAPURBNDELAY or USBDEVFS_REAPURBNDELAY32, 0x7fff87cefcf8) = 0
>timerfd_settime(6, 0, {it_interval={0, 0}, it_value={0, 0}}, NULL) = 0
>futex(0x1da8a14, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x1da89e8, 12) = 1
>brk(0)                                  = 0x1dc9000
>brk(0x1dec000)                          = 0x1dec000
>futex(0x7faa3eb914a4, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 13, {1334592257, 697187000}, ffffffff) = -1 ETIMEDOUT (Connection timed out)
>futex(0x7faa3eb91460, FUTEX_WAKE_PRIVATE, 1) = 0
>write(2, "\n   Error read system info on us"..., 35
>   Error read system info on usb:
>) = 35
>futex(0x1da8910, FUTEX_WAKE_PRIVATE, 1) = 0
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db3ea0) = -1 ENODEV (No such device)
>ioctl(7, USBDEVFS_SUBMITURB or USBDEVFS_SUBMITURB32, 0x1db3ea0) = -1 ENODEV (No such device)
>exit_group(-1)                          = ?

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Attachments on bug 812943: 577750