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Bug 808934 - f17 lsusb -t emits an 'No such file or directory'
Summary: f17 lsusb -t emits an 'No such file or directory'
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: usbutils
Version: 17
Hardware: x86_64
OS: Linux
unspecified
low
Target Milestone: ---
Assignee: Lukáš Nykrýn
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-04-01 20:58 UTC by Reartes Guillermo
Modified: 2012-05-02 20:54 UTC (History)
1 user (show)

Fixed In Version: usbutils-004-4.fc17
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 814087 (view as bug list)
Environment:
Last Closed: 2012-05-02 20:54:11 UTC
Type: ---

Attachments (Terms of Use)
If driver link is missing, don't show any error (1.15 KB, patch)
2012-04-03 10:28 UTC, Lukáš Nykrýn 		no flags Details | Diff
strace with the patched lsusb (46.11 KB, text/plain)
2012-04-03 22:10 UTC, Reartes Guillermo 		no flags Details
strace, upatched, F16, lsusb -t does not complete, must ctrl+c it. (43.44 KB, text/plain)
2012-04-03 22:15 UTC, Reartes Guillermo 		no flags Details
Add an attachment (proposed patch, testcase, etc.)

Description Reartes Guillermo 2012-04-01 20:58:45 UTC 
Description of problem:

[root@fnext ~]# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 008 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 009 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 010 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 011 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 04a9:1905 Canon, Inc. CanoScan LiDE 200
Bus 005 Device 002: ID 0a81:0101 Chesen Electronics Corp. Keyboard
Bus 005 Device 003: ID 0458:003a KYE Systems Corp. (Mouse Systems) NetScroll+ Mini Traveler / Genius NetScroll 120

[root@fnext ~]# lsusb > lsusb-tst.out

[root@fnext ~]# lsusb -t
1-2:1.0: No such file or directory
/:  Bus 11.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
/:  Bus 10.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
/:  Bus 09.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
/:  Bus 08.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
/:  Bus 07.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/4p, 12M
/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/2p, 12M
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/5p, 12M
    |__ Port 4: Dev 2, If 0, Class=HID, Driver=usbhid, 1.5M
    |__ Port 4: Dev 2, If 1, Class=HID, Driver=usbhid, 1.5M
    |__ Port 5: Dev 3, If 0, Class=HID, Driver=usbhid, 1.5M
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/5p, 12M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/4p, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/5p, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/5p, 480M

[root@fnext ~]# lsusb -t > lsusb-t-tst.out
1-2:1.0: No such file or directory

[root@fnext ~]# lsusb -t &> lsusb-t-tst.out
[root@fnext ~]# lsusb -vvv > lsusb-t-tst.out

Version-Release number of selected component (if applicable):
F17, F16, Centos, RHEL (multiple hosts, desktos, laptops)

How reproducible:
always

Steps to Reproduce:
1. lsusb -t
2. <pauses can happen>
  
Actual results:
on some hosts, lsusb might no finish.
on the rest of the hosts, the error is shown
and it continues. no know issue other than the
error shown.

F16 host:

# lsusb -t
2-1.7:1.2: No such file or directory
2-1.8:0.0: No such file or directory
2-1.8:0.1: No such file or directory
2-1.7:1.3: No such file or directory
^C

Normal F16:

[root@grimmjow ~]# lsusb 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 003: ID 0461:4db1 Primax Electronics, Ltd 
Bus 002 Device 019: ID 413c:8187 Dell Computer Corp. DW375 Bluetooth Module
Bus 002 Device 004: ID 0a5c:5800 Broadcom Corp. BCM5880 Secure Applications Processor

Expected results:
no error

Additional info:

F17 ---> usbutils-004-3.fc17_x86_64
F17 ---> 3.3.0-8.fc17.x86_64

F16 ---> usbutils-003-4.fc16_x86_64
F16 ---> 3.3.0-4.fc16.x86_64
Comment 1 Lukáš Nykrýn 2012-04-03 08:00:10 UTC 
I was not able to reproduce it, but can you please provide output of:

strace lsusb -t
Comment 2 Lukáš Nykrýn 2012-04-03 09:32:39 UTC 
I have found cause of this issue, sometimes there is no /sys/bus/usb/devices/*/driver file.
Comment 3 Lukáš Nykrýn 2012-04-03 10:28:05 UTC 
Created attachment 574815 [details]
If driver link is missing, don't show any error

I think that this change should be sufficient, but I will discuss this with upstream.
Comment 4 Reartes Guillermo 2012-04-03 11:31:27 UTC 
# strace lsusb -t
execve("/usr/bin/lsusb", ["lsusb", "-t"], [/* 26 vars */]) = 0
brk(0)                                  = 0x1ce3000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffca699b000
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=129303, ...}) = 0
mmap(NULL, 129303, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7ffca6978000
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 &\200\2711\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=56280, ...}) = 0
mmap(0x31b9800000, 2149104, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31b9800000
mprotect(0x31b980d000, 2093056, PROT_NONE) = 0
mmap(0x31b9a0c000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xc000) = 0x31b9a0c000
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\242\2401\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1951696, ...}) = 0
mmap(0x31a0a00000, 3773688, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31a0a00000
mprotect(0x31a0b90000, 2093056, PROT_NONE) = 0
mmap(0x31a0d8f000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18f000) = 0x31a0d8f000
mmap(0x31a0d94000, 21752, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x31a0d94000
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`!\340\2411\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=47552, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffca6977000
mmap(0x31a1e00000, 2128968, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31a1e00000
mprotect(0x31a1e07000, 2093056, PROT_NONE) = 0
mmap(0x31a2006000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x31a2006000
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 \2411\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=140960, ...}) = 0
mmap(0x31a1200000, 2204664, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31a1200000
mprotect(0x31a1216000, 2093056, PROT_NONE) = 0
mmap(0x31a1415000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x31a1415000
mmap(0x31a1417000, 13304, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x31a1417000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffca6976000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffca6974000
arch_prctl(ARCH_SET_FS, 0x7ffca6974720) = 0
mprotect(0x31a0d8f000, 16384, PROT_READ) = 0
mprotect(0x31a2006000, 4096, PROT_READ) = 0
mprotect(0x31a1415000, 4096, PROT_READ) = 0
mprotect(0x31a081e000, 4096, PROT_READ) = 0
munmap(0x7ffca6978000, 129303)          = 0
set_tid_address(0x7ffca69749f0)         = 9100
set_robust_list(0x7ffca6974a00, 0x18)   = 0
rt_sigaction(SIGRTMIN, {0x31a1206510, [], SA_RESTORER|SA_SIGINFO, 0x31a120eee0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x31a12065a0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x31a120eee0}, 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)                                  = 0x1ce3000
brk(0x1d04000)                          = 0x1d04000
brk(0)                                  = 0x1d04000
open("/usr/share/hwdata/usb.ids", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=451747, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffca699a000
read(3, "#\n#\tList of USB ID's\n#\n#\tMaintai"..., 4096) = 4096
read(3, "Bluetooth Device\n\t6440  WML-C52A"..., 4096) = 4096
read(3, "bcam\n\t1c02  PhotoSmart A710 seri"..., 4096) = 4096
read(3, "FP\n\t5711  PhotoSmart C4100 serie"..., 4096) = 4096
read(3, "-Xchange Adapter\n\tadcc  Composit"..., 4096) = 4096
read(3, "310  K590 Printer, Self-Service\n"..., 4096) = 4096
read(3, "\n\t05b7  Digital Camera\n\t05b8  Di"..., 4096) = 4096
read(3, " (STK7700P based)\n0414  Giga-Byt"..., 4096) = 4096
read(3, "(MTP)\n\t4151  Zen Vision:M (mtp)\n"..., 4096) = 4096
read(3, "orp.\n\t0001  Integrated Hub\n\t0acd"..., 4096) = 4096
read(3, "nter\n\t007c  Lexmark X1110/X1130/"..., 4096) = 4096
read(3, "\n\tf001  FT2232H Hi-Speed JTAG IC"..., 4096) = 4096
read(3, "  Sidewinder Strategic Commander"..., 4096) = 4096
read(3, "ed Pocket PC 2003\n\t043d  Becker "..., 4096) = 4096
read(3, "feCam HD-5000\n\t930a  ISOUSB.SYS "..., 4096) = 4096
read(3, "s Pro)\n\t08c5  QuickCam Pro 5000\n"..., 4096) = 4096
read(3, "f  F710 Wireless Gamepad [XInput"..., 4096) = 4096
read(3, "Player\n\t0163  GoGear SA1100\n\t016"..., 4096) = 4096
read(3, "018  Studio Mouse\n\t101d  Mouse*i"..., 4096) = 4096
brk(0)                                  = 0x1d04000
brk(0x1d25000)                          = 0x1d25000
read(3, "UX256 MIDI I/F\n\t1001  MU1000\n\t10"..., 4096) = 4096
read(3, "h 7600 Scanner\n\t0221  OneTouch 5"..., 4096) = 4096
read(3, "219  CanoScan 9950F\n\t221b  CanoS"..., 4096) = 4096
read(3, "ot S410 Digital Elph\n\t30bb  Powe"..., 4096) = 4096
read(3, "\t4482  Serial Converter\n\t4485  S"..., 4096) = 4096
read(3, "tylus Photo RX560/580/590 (PM-A8"..., 4096) = 4096
read(3, "800/6800 Zoom (PC CAM)\n\t0108  Fi"..., 4096) = 4096
read(3, "1  PIC24F Starter Kit\n\t900a  PIC"..., 4096) = 4096
read(3, "ader\n\t5292  SCL011 RFID reader\n\t"..., 4096) = 4096
read(3, "  MITs Sync\n\t6632  MITs Sync\n\t66"..., 4096) = 4096
read(3, " HL-5250DN Printer\n\t002c  Printe"..., 4096) = 4096
read(3, "ALink SPIF225A\n\t1528  SPCA1527A/"..., 4096) = 4096
read(3, "nk RT2870]\n\t805e  F5D8053 N Wire"..., 4096) = 4096
read(3, "nstitut of Microelectronic & Mec"..., 4096) = 4096
read(3, "G-TJ35 PDA Serial\n\t016a  Clie PE"..., 4096) = 4096
read(3, "ebooks [pwc]\n\ta000  SWL-2100U\n\ta"..., 4096) = 4096
read(3, "03  UC-SGT\n\t5004  UC-SGT\n\t6008  "..., 4096) = 4096
brk(0)                                  = 0x1d25000
brk(0x1d46000)                          = 0x1d46000
read(3, "Fritz!WLAN [Texas Instruments TN"..., 4096) = 4096
read(3, "l\n\tb00a  PSX/USB converter\n\tb00b"..., 4096) = 4096
read(3, " (Type 3)\n\t0032  Zip 250 (Ver 2)"..., 4096) = 4096
read(3, "ckpad (ANSI)\n\t0224  Internal Key"..., 4096) = 4096
read(3, "0  SIMCom SIM5218 modem\n\t9001  G"..., 4096) = 4096
read(3, "aker X6/X6U\n\t009a  Phantom C6\n\t0"..., 4096) = 4096
read(3, "Mbps Adapter\n05df  Silicon Visio"..., 4096) = 4096
read(3, "cs Co., Ltd\n0607  Bridge Informa"..., 4096) = 4096
read(3, "r CrystalEye Webcam\n\ta102  Acer/"..., 4096) = 4096
read(3, "layer\n\t821c  MP3 Player\n\t821d  M"..., 4096) = 4096
read(3, " XT Camera [remote mode]\n\t4017  "..., 4096) = 4096
read(3, "l Connect Modem\n\t000b  WireSpeed"..., 4096) = 4096
read(3, "apanese Keyboard\n06d6  Aashima T"..., 4096) = 4096
read(3, " GamePad\n\tb000  Hercules DJ Cons"..., 4096) = 4096
read(3, "\t4586  XBox Device\n\t4588  XBox D"..., 4096) = 4096
read(3, "g. Co., Ltd\n077b  Linksys\n\t08be "..., 4096) = 4096
read(3, "0790  Pro-Image Manufacturing Co"..., 4096) = 4096
read(3, "Voice Recorder DS-330\n\t0207  Dig"..., 4096) = 4096
brk(0)                                  = 0x1d46000
brk(0x1d67000)                          = 0x1d67000
read(3, "eader (UISMA)\n\t0012  Reader (UIS"..., 4096) = 4096
read(3, "02.11n Wireless N Adapter(rev.B)"..., 4096) = 4096
read(3, "imax 410\n\t000e  Digimax 360\n\t001"..., 4096) = 4096
read(3, "chi Maxell, Ltd\n\t3102  Bluetooth"..., 4096) = 4096
read(3, "3  Pocket DV Digital Camera\n\t010"..., 4096) = 4096
read(3, "\t3402  AES3400 Sensor\n\t3403  AES"..., 4096) = 4096
read(3, "0 (X750_USB)\n0925  Lakeview Rese"..., 4096) = 4096
read(3, "0U A/V Capture Audio\n\ta004  Conv"..., 4096) = 4096
read(3, "\t0007  Reader V2\n\t0008  ZFG-9800"..., 4096) = 4096
read(3, " 82-key backlit keyboard\n0a35  R"..., 4096) = 4096
read(3, "Corp.\n0a5f  Zebra\n\t0009  LP2844 "..., 4096) = 4096
read(3, "unication Camera VGP-VCC1\n\tc302 "..., 4096) = 4096
read(3, "\n0b0b  Datamax-O'Neil\n\t106e  Dat"..., 4096) = 4096
read(3, "nology, Inc.\n0b85  Elkat Electro"..., 4096) = 4096
read(3, " SmartPhone Sync\n\t0a6c  SmartPho"..., 4096) = 4096
read(3, " Mass Storage Device\n\t0178  Mass"..., 4096) = 4096
read(3, "\n\t0204  Metrologic MS7120 Barcod"..., 4096) = 4096
read(3, "0360/MT9V011 or MI0360SOC/MT9V11"..., 4096) = 4096
brk(0)                                  = 0x1d67000
brk(0x1d88000)                          = 0x1d88000
read(3, "td\n0ccc  Domex Technology Corp.\n"..., 4096) = 4096
read(3, "y, Ltd\n0d3d  Tangtop Technology "..., 4096) = 4096
read(3, "  Mass Storage Controller\n\t5200 "..., 4096) = 4096
read(3, "hen Yeh Enterprise Corp.\n0db7  E"..., 4096) = 4096
read(3, "ss Network USB Adapter\n\t9075  WL"..., 4096) = 4096
read(3, "\t1204  Gmini XS 200\n\t1306  504 P"..., 4096) = 4096
read(3, " Co., Ltd\n0f2f  Priva Design Ser"..., 4096) = 4096
read(3, "ass Storage] \n\te0ef  C905 Phone "..., 4096) = 4096
read(3, "  Winbond Electronics Corp. [hex"..., 4096) = 4096
read(3, " Inc.\n\t3009  eHome Infrared Tran"..., 4096) = 4096
read(3, " 1650-16 16-Port RS-232/422/485\n"..., 4096) = 4096
read(3, "reless Modem\n\t900a  Gobi 2000 Wi"..., 4096) = 4096
read(3, " Wireless Terminal\n\t1037  Ideos\n"..., 4096) = 4096
read(3, "der\n13b0  PerkinElmer Optoelectr"..., 4096) = 4096
read(3, "  DataTraveler 2.0 4GB Flash Dri"..., 4096) = 4096
read(3, " Inc.\n14b0  StarTech.com Ltd.\n14"..., 4096) = 4096
read(3, " USB Wireless Card\n\t0012  WUBR-2"..., 4096) = 4096
read(3, "dem\n\t1a17  Agilent Technologies "..., 4096) = 4096
brk(0)                                  = 0x1d88000
brk(0x1da9000)                          = 0x1da9000
read(3, "801  U43\n16b5  Persentec, Inc.\n\t"..., 4096) = 4096
read(3, "asynote MX66-208W\n\taa11  Web Cam"..., 4096) = 4096
read(3, "(v2) based USB DVB-T receiver\n\tf"..., 4096) = 4096
read(3, "nfotech Logistic, LLC\n19b9  Data"..., 4096) = 4096
read(3, "35  PC Camera/Webcam controller\n"..., 4096) = 4096
read(3, "CS, INC.\n1ca0  ACCARIO Inc.\n1cac"..., 4096) = 4096
read(3, "5523]\n\t3a03  DWL-G132 (no firmwa"..., 4096) = 4096
read(3, " 1.0 (TDMA) chipset\n\t1801  Rainb"..., 4096) = 4096
read(3, "0\n\t100a  MPIO FL300\n\t100b  MPIO "..., 4096) = 4096
read(3, "AIO Printer 926\n\t5116  AIO Print"..., 4096) = 4096
read(3, " 802.11g Adapter [Intersil ISL38"..., 4096) = 4096
read(3, "ller from (Intel/CSR)\n\t1110  PRO"..., 4096) = 4096
read(3, "d protocols\n\n# Syntax:\n# C class"..., 4096) = 4096
read(3, "  VCR Audio\nAT 070a  Video Disc "..., 4096) = 4096
read(3, "  Bicylce Crank\n\t0ce  Handle Bar"..., 4096) = 4096
read(3, "Locking Scroll Lock\n\t085  Keypad"..., 4096) = 4096
read(3, "tion\n\t062  Closed Caption Select"..., 4096) = 4096
brk(0)                                  = 0x1da9000
brk(0x1dca000)                          = 0x1dca000
read(3, "\n\t234  AC Scroll Down\n\t235  AC S"..., 4096) = 4096
read(3, "oning\n\t038  Cursor Mode\n\t039  Cu"..., 4096) = 4096
read(3, "e Limit Expired\n\t044  Charging\n\t"..., 4096) = 4096
read(3, "\n\n# HID Descriptor bCountryCode\n"..., 4096) = 1187
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x7ffca699a000, 4096)            = 0
open("/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3
getdents(3, /* 13 entries */, 32768)    = 312
close(3)                                = 0
uname({sys="Linux", node="ulquiorra.espada", ...}) = 0
stat("/sys/bus/usb/devices", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
pipe([3, 4])                            = 0
timerfd_create(CLOCK_MONOTONIC, 0x800 /* TFD_??? */) = 5
access("/proc/bus/usb/devices", R_OK)   = -1 ENOENT (No such file or directory)
open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 6
getdents(6, /* 31 entries */, 32768)    = 880
open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb1/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb1/maxchild", O_RDONLY) = 7
read(7, "5\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb1/speed", O_RDONLY) = 7
read(7, "480\n", 255)                   = 4
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb1/../driver", "../../../bus/pci/drivers/ehci_hcd"..., 4096) = 33
open("/sys/bus/usb/devices/1-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/1-0:1.0/driver", "../../../../../bus/usb/drivers/hub"..., 4096) = 34
open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb2/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb2/maxchild", O_RDONLY) = 7
read(7, "5\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb2/speed", O_RDONLY) = 7
read(7, "480\n", 255)                   = 4
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb2/../driver", "../../../bus/pci/drivers/ehci_hcd"..., 4096) = 33
open("/sys/bus/usb/devices/2-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/2-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/2-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/2-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/2-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/2-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/2-0:1.0/driver", "../../../../../bus/usb/drivers/hub"..., 4096) = 34
open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb3/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb3/maxchild", O_RDONLY) = 7
read(7, "4\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb3/speed", O_RDONLY) = 7
read(7, "480\n", 255)                   = 4
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb3/../driver", "../../../bus/pci/drivers/ehci_hcd"..., 4096) = 33
open("/sys/bus/usb/devices/3-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/3-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/3-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/3-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/3-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/3-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/3-0:1.0/driver", "../../../../../bus/usb/drivers/hub"..., 4096) = 34
open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb4/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb4/maxchild", O_RDONLY) = 7
read(7, "5\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb4/speed", O_RDONLY) = 7
read(7, "12\n", 255)                    = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb4/../driver", "../../../bus/pci/drivers/ohci_hcd"..., 4096) = 33
open("/sys/bus/usb/devices/4-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/4-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/4-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/4-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/4-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/4-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/4-0:1.0/driver", "../../../../../bus/usb/drivers/hub"..., 4096) = 34
open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb5/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb5/maxchild", O_RDONLY) = 7
read(7, "5\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb5/speed", O_RDONLY) = 7
read(7, "12\n", 255)                    = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb5/../driver", "../../../bus/pci/drivers/ohci_hcd"..., 4096) = 33
open("/sys/bus/usb/devices/5-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/5-0:1.0/driver", "../../../../../bus/usb/drivers/hub"..., 4096) = 34
open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb6/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb6/maxchild", O_RDONLY) = 7
read(7, "2\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb6/speed", O_RDONLY) = 7
read(7, "12\n", 255)                    = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb6/../driver", "../../../bus/pci/drivers/ohci_hcd"..., 4096) = 33
open("/sys/bus/usb/devices/6-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/6-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/6-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/6-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/6-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/6-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/6-0:1.0/driver", "../../../../../bus/usb/drivers/hub"..., 4096) = 34
open("/sys/bus/usb/devices/usb7/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb7/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb7/maxchild", O_RDONLY) = 7
read(7, "4\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb7/speed", O_RDONLY) = 7
read(7, "12\n", 255)                    = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb7/../driver", "../../../bus/pci/drivers/ohci_hcd"..., 4096) = 33
open("/sys/bus/usb/devices/7-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/7-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/7-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/7-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/7-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/7-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/7-0:1.0/driver", "../../../../../bus/usb/drivers/hub"..., 4096) = 34
open("/sys/bus/usb/devices/usb8/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb8/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb8/maxchild", O_RDONLY) = 7
read(7, "2\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb8/speed", O_RDONLY) = 7
read(7, "480\n", 255)                   = 4
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb8/../driver", "../../../../bus/pci/drivers/xhci_hcd", 4096) = 36
open("/sys/bus/usb/devices/8-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/8-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/8-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/8-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/8-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/8-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/8-0:1.0/driver", "../../../../../../bus/usb/drivers/hub"..., 4096) = 37
open("/sys/bus/usb/devices/usb9/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb9/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb9/maxchild", O_RDONLY) = 7
read(7, "2\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb9/speed", O_RDONLY) = 7
read(7, "5000\n", 255)                  = 5
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb9/../driver", "../../../../bus/pci/drivers/xhci_hcd", 4096) = 36
open("/sys/bus/usb/devices/9-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/9-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/9-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/9-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/9-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/9-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/9-0:1.0/driver", "../../../../../../bus/usb/drivers/hub"..., 4096) = 37
open("/sys/bus/usb/devices/usb10/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb10/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb10/maxchild", O_RDONLY) = 7
read(7, "2\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb10/speed", O_RDONLY) = 7
read(7, "480\n", 255)                   = 4
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb10/../driver", "../../../../bus/pci/drivers/xhci_hcd", 4096) = 36
open("/sys/bus/usb/devices/10-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/10-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/10-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/10-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/10-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/10-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/10-0:1.0/driver", "../../../../../../bus/usb/drivers/hub"..., 4096) = 37
open("/sys/bus/usb/devices/usb11/devnum", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb11/bDeviceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/usb11/maxchild", O_RDONLY) = 7
read(7, "2\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/usb11/speed", O_RDONLY) = 7
read(7, "5000\n", 255)                  = 5
close(7)                                = 0
readlink("/sys/bus/usb/devices/usb11/../driver", "../../../../bus/pci/drivers/xhci_hcd", 4096) = 36
open("/sys/bus/usb/devices/11-0:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/11-0:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "09\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/11-0:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/11-0:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/11-0:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/11-0:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/11-0:1.0/driver", "../../../../../../bus/usb/drivers/hub"..., 4096) = 37
open("/sys/bus/usb/devices/1-2/bConfigurationValue", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/bDeviceClass", O_RDONLY) = 7
read(7, "ff\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/bDeviceProtocol", O_RDONLY) = 7
read(7, "ff\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/bDeviceSubClass", O_RDONLY) = 7
read(7, "ff\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/bMaxPacketSize0", O_RDONLY) = 7
read(7, "64\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/bMaxPower", O_RDONLY) = 7
read(7, "500mA\n", 255)                 = 6
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/bNumConfigurations", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/bNumInterfaces", O_RDONLY) = 7
read(7, " 1\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/bcdDevice", O_RDONLY) = 7
read(7, "0603\n", 11)                   = 5
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/bmAttributes", O_RDONLY) = 7
read(7, "a0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/configuration", O_RDONLY) = 7
read(7, "", 11)                         = 0
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/devnum", O_RDONLY) = 7
read(7, "2\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/idProduct", O_RDONLY) = 7
read(7, "1905\n", 11)                   = 5
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/idVendor", O_RDONLY) = 7
read(7, "04a9\n", 11)                   = 5
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/maxchild", O_RDONLY) = 7
read(7, "0\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/manufacturer", O_RDONLY) = 7
read(7, "Canon\n", 255)                 = 6
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/product", O_RDONLY) = 7
read(7, "CanoScan\n", 255)              = 9
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/serial", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/sys/bus/usb/devices/1-2/version", O_RDONLY) = 7
read(7, " 2.00\n", 255)                 = 6
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/speed", O_RDONLY) = 7
read(7, "480\n", 255)                   = 4
close(7)                                = 0
readlink("/sys/bus/usb/devices/1-2/driver", "../../../../../bus/usb/drivers/usb"..., 4096) = 34
open("/sys/bus/usb/devices/1-2:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "ff\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "ff\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "ff\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/1-2:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "03\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/1-2:1.0/driver", 0x7fff062aa490, 4096) = -1 ENOENT (No such file or directory)
dup(2)                                  = 7
fcntl(7, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(7, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 1), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffca699a000
lseek(7, 0, SEEK_CUR)                   = -1 ESPIPE (Illegal seek)
write(7, "1-2:1.0: No such file or directo"..., 351-2:1.0: No such file or directory
) = 35
close(7)                                = 0
munmap(0x7ffca699a000, 4096)            = 0
open("/sys/bus/usb/devices/5-4/bConfigurationValue", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/bDeviceClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/bDeviceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/bDeviceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/bMaxPacketSize0", O_RDONLY) = 7
read(7, "8\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/bMaxPower", O_RDONLY) = 7
read(7, "100mA\n", 255)                 = 6
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/bNumConfigurations", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/bNumInterfaces", O_RDONLY) = 7
read(7, " 2\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/bcdDevice", O_RDONLY) = 7
read(7, "0110\n", 11)                   = 5
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/bmAttributes", O_RDONLY) = 7
read(7, "a0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/configuration", O_RDONLY) = 7
read(7, "", 11)                         = 0
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/devnum", O_RDONLY) = 7
read(7, "2\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/idProduct", O_RDONLY) = 7
read(7, "0101\n", 11)                   = 5
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/idVendor", O_RDONLY) = 7
read(7, "0a81\n", 11)                   = 5
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/maxchild", O_RDONLY) = 7
read(7, "0\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/manufacturer", O_RDONLY) = 7
read(7, "CHESEN\n", 255)                = 7
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/product", O_RDONLY) = 7
read(7, "USB Keyboard\n", 255)          = 13
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/serial", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/sys/bus/usb/devices/5-4/version", O_RDONLY) = 7
read(7, " 1.10\n", 255)                 = 6
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/speed", O_RDONLY) = 7
read(7, "1.5\n", 255)                   = 4
close(7)                                = 0
readlink("/sys/bus/usb/devices/5-4/driver", "../../../../../bus/usb/drivers/usb"..., 4096) = 34
open("/sys/bus/usb/devices/5-4:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "03\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/5-4:1.0/driver", "../../../../../../bus/usb/drivers/usbhid"..., 4096) = 40
open("/sys/bus/usb/devices/5-4:1.1/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4:1.1/bInterfaceClass", O_RDONLY) = 7
read(7, "03\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4:1.1/bInterfaceNumber", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4:1.1/bInterfaceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4:1.1/bInterfaceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-4:1.1/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/5-4:1.1/driver", "../../../../../../bus/usb/drivers/usbhid", 4096) = 40
open("/sys/bus/usb/devices/5-5/bConfigurationValue", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/bDeviceClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/bDeviceProtocol", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/bDeviceSubClass", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/bMaxPacketSize0", O_RDONLY) = 7
read(7, "8\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/bMaxPower", O_RDONLY) = 7
read(7, "100mA\n", 255)                 = 6
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/bNumConfigurations", O_RDONLY) = 7
read(7, "1\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/bNumInterfaces", O_RDONLY) = 7
read(7, " 1\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/bcdDevice", O_RDONLY) = 7
read(7, "0100\n", 11)                   = 5
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/bmAttributes", O_RDONLY) = 7
read(7, "a0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/configuration", O_RDONLY) = 7
read(7, "HID-complia", 11)              = 11
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/devnum", O_RDONLY) = 7
read(7, "3\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/idProduct", O_RDONLY) = 7
read(7, "003a\n", 11)                   = 5
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/idVendor", O_RDONLY) = 7
read(7, "0458\n", 11)                   = 5
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/maxchild", O_RDONLY) = 7
read(7, "0\n", 11)                      = 2
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/manufacturer", O_RDONLY) = 7
read(7, "Genius\n", 255)                = 7
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/product", O_RDONLY) = 7
read(7, "Optical Mouse\n", 255)         = 14
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/serial", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/sys/bus/usb/devices/5-5/version", O_RDONLY) = 7
read(7, " 1.10\n", 255)                 = 6
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/speed", O_RDONLY) = 7
read(7, "1.5\n", 255)                   = 4
close(7)                                = 0
readlink("/sys/bus/usb/devices/5-5/driver", "../../../../../bus/usb/drivers/usb"..., 4096) = 34
open("/sys/bus/usb/devices/5-5:1.0/bAlternateSetting", O_RDONLY) = 7
read(7, " 0\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-5:1.0/bInterfaceClass", O_RDONLY) = 7
read(7, "03\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-5:1.0/bInterfaceNumber", O_RDONLY) = 7
read(7, "00\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-5:1.0/bInterfaceProtocol", O_RDONLY) = 7
read(7, "02\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-5:1.0/bInterfaceSubClass", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
open("/sys/bus/usb/devices/5-5:1.0/bNumEndpoints", O_RDONLY) = 7
read(7, "01\n", 11)                     = 3
close(7)                                = 0
readlink("/sys/bus/usb/devices/5-5:1.0/driver", "../../../../../../bus/usb/drivers/usbhid", 4096) = 40
getdents(6, /* 0 entries */, 32768)     = 0
close(6)                                = 0
fstat(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 1), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffca699a000
write(1, "/:  Bus 11.Port 1: Dev 1, Class="..., 68/:  Bus 11.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
) = 68
write(1, "/:  Bus 10.Port 1: Dev 1, Class="..., 67/:  Bus 10.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
) = 67
write(1, "/:  Bus 09.Port 1: Dev 1, Class="..., 68/:  Bus 09.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
) = 68
write(1, "/:  Bus 08.Port 1: Dev 1, Class="..., 67/:  Bus 08.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
) = 67
write(1, "/:  Bus 07.Port 1: Dev 1, Class="..., 66/:  Bus 07.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/4p, 12M
) = 66
write(1, "/:  Bus 06.Port 1: Dev 1, Class="..., 66/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/2p, 12M
) = 66
write(1, "/:  Bus 05.Port 1: Dev 1, Class="..., 66/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/5p, 12M
) = 66
write(1, "    |__ Port 4: Dev 2, If 0, Cla"..., 60    |__ Port 4: Dev 2, If 0, Class=HID, Driver=usbhid, 1.5M
) = 60
write(1, "    |__ Port 4: Dev 2, If 1, Cla"..., 60    |__ Port 4: Dev 2, If 1, Class=HID, Driver=usbhid, 1.5M
) = 60
write(1, "    |__ Port 5: Dev 3, If 0, Cla"..., 60    |__ Port 5: Dev 3, If 0, Class=HID, Driver=usbhid, 1.5M
) = 60
write(1, "/:  Bus 04.Port 1: Dev 1, Class="..., 66/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/5p, 12M
) = 66
write(1, "/:  Bus 03.Port 1: Dev 1, Class="..., 67/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/4p, 480M
) = 67
write(1, "/:  Bus 02.Port 1: Dev 1, Class="..., 67/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/5p, 480M
) = 67
write(1, "/:  Bus 01.Port 1: Dev 1, Class="..., 67/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/5p, 480M
) = 67
write(1, "    |__ Port 2: Dev 2, If 0, Cla"..., 56    |__ Port 2: Dev 2, If 0, Class=vend., Driver=, 480M
) = 56
close(3)                                = 0
close(4)                                = 0
close(5)                                = 0
exit_group(0)                           = ?

This is an f17 host. I will get info from other hosts later.
Comment 5 Reartes Guillermo 2012-04-03 11:40:59 UTC 
And also:

# strace lsusb
execve("/usr/bin/lsusb", ["lsusb"], [/* 26 vars */]) = 0
brk(0)                                  = 0xfa4000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9007000
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=129303, ...}) = 0
mmap(NULL, 129303, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f0aa8fe0000
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 &\200\2711\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=56280, ...}) = 0
mmap(0x31b9800000, 2149104, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31b9800000
mprotect(0x31b980d000, 2093056, PROT_NONE) = 0
mmap(0x31b9a0c000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xc000) = 0x31b9a0c000
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\242\2401\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1951696, ...}) = 0
mmap(0x31a0a00000, 3773688, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31a0a00000
mprotect(0x31a0b90000, 2093056, PROT_NONE) = 0
mmap(0x31a0d8f000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18f000) = 0x31a0d8f000
mmap(0x31a0d94000, 21752, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x31a0d94000
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`!\340\2411\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=47552, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa8fdf000
mmap(0x31a1e00000, 2128968, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31a1e00000
mprotect(0x31a1e07000, 2093056, PROT_NONE) = 0
mmap(0x31a2006000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x31a2006000
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 \2411\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=140960, ...}) = 0
mmap(0x31a1200000, 2204664, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x31a1200000
mprotect(0x31a1216000, 2093056, PROT_NONE) = 0
mmap(0x31a1415000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x31a1415000
mmap(0x31a1417000, 13304, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x31a1417000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa8fde000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa8fdc000
arch_prctl(ARCH_SET_FS, 0x7f0aa8fdc720) = 0
mprotect(0x31a0d8f000, 16384, PROT_READ) = 0
mprotect(0x31a2006000, 4096, PROT_READ) = 0
mprotect(0x31a1415000, 4096, PROT_READ) = 0
mprotect(0x31a081e000, 4096, PROT_READ) = 0
munmap(0x7f0aa8fe0000, 129303)          = 0
set_tid_address(0x7f0aa8fdc9f0)         = 9193
set_robust_list(0x7f0aa8fdca00, 0x18)   = 0
rt_sigaction(SIGRTMIN, {0x31a1206510, [], SA_RESTORER|SA_SIGINFO, 0x31a120eee0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x31a12065a0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x31a120eee0}, 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)                                  = 0xfa4000
brk(0xfc5000)                           = 0xfc5000
brk(0)                                  = 0xfc5000
open("/usr/share/hwdata/usb.ids", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=451747, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(3, "#\n#\tList of USB ID's\n#\n#\tMaintai"..., 4096) = 4096
read(3, "Bluetooth Device\n\t6440  WML-C52A"..., 4096) = 4096
read(3, "bcam\n\t1c02  PhotoSmart A710 seri"..., 4096) = 4096
read(3, "FP\n\t5711  PhotoSmart C4100 serie"..., 4096) = 4096
read(3, "-Xchange Adapter\n\tadcc  Composit"..., 4096) = 4096
read(3, "310  K590 Printer, Self-Service\n"..., 4096) = 4096
read(3, "\n\t05b7  Digital Camera\n\t05b8  Di"..., 4096) = 4096
read(3, " (STK7700P based)\n0414  Giga-Byt"..., 4096) = 4096
read(3, "(MTP)\n\t4151  Zen Vision:M (mtp)\n"..., 4096) = 4096
read(3, "orp.\n\t0001  Integrated Hub\n\t0acd"..., 4096) = 4096
read(3, "nter\n\t007c  Lexmark X1110/X1130/"..., 4096) = 4096
read(3, "\n\tf001  FT2232H Hi-Speed JTAG IC"..., 4096) = 4096
read(3, "  Sidewinder Strategic Commander"..., 4096) = 4096
read(3, "ed Pocket PC 2003\n\t043d  Becker "..., 4096) = 4096
read(3, "feCam HD-5000\n\t930a  ISOUSB.SYS "..., 4096) = 4096
read(3, "s Pro)\n\t08c5  QuickCam Pro 5000\n"..., 4096) = 4096
read(3, "f  F710 Wireless Gamepad [XInput"..., 4096) = 4096
read(3, "Player\n\t0163  GoGear SA1100\n\t016"..., 4096) = 4096
read(3, "018  Studio Mouse\n\t101d  Mouse*i"..., 4096) = 4096
brk(0)                                  = 0xfc5000
brk(0xfe6000)                           = 0xfe6000
read(3, "UX256 MIDI I/F\n\t1001  MU1000\n\t10"..., 4096) = 4096
read(3, "h 7600 Scanner\n\t0221  OneTouch 5"..., 4096) = 4096
read(3, "219  CanoScan 9950F\n\t221b  CanoS"..., 4096) = 4096
read(3, "ot S410 Digital Elph\n\t30bb  Powe"..., 4096) = 4096
read(3, "\t4482  Serial Converter\n\t4485  S"..., 4096) = 4096
read(3, "tylus Photo RX560/580/590 (PM-A8"..., 4096) = 4096
read(3, "800/6800 Zoom (PC CAM)\n\t0108  Fi"..., 4096) = 4096
read(3, "1  PIC24F Starter Kit\n\t900a  PIC"..., 4096) = 4096
read(3, "ader\n\t5292  SCL011 RFID reader\n\t"..., 4096) = 4096
read(3, "  MITs Sync\n\t6632  MITs Sync\n\t66"..., 4096) = 4096
read(3, " HL-5250DN Printer\n\t002c  Printe"..., 4096) = 4096
read(3, "ALink SPIF225A\n\t1528  SPCA1527A/"..., 4096) = 4096
read(3, "nk RT2870]\n\t805e  F5D8053 N Wire"..., 4096) = 4096
read(3, "nstitut of Microelectronic & Mec"..., 4096) = 4096
read(3, "G-TJ35 PDA Serial\n\t016a  Clie PE"..., 4096) = 4096
read(3, "ebooks [pwc]\n\ta000  SWL-2100U\n\ta"..., 4096) = 4096
read(3, "03  UC-SGT\n\t5004  UC-SGT\n\t6008  "..., 4096) = 4096
brk(0)                                  = 0xfe6000
brk(0x1007000)                          = 0x1007000
read(3, "Fritz!WLAN [Texas Instruments TN"..., 4096) = 4096
read(3, "l\n\tb00a  PSX/USB converter\n\tb00b"..., 4096) = 4096
read(3, " (Type 3)\n\t0032  Zip 250 (Ver 2)"..., 4096) = 4096
read(3, "ckpad (ANSI)\n\t0224  Internal Key"..., 4096) = 4096
read(3, "0  SIMCom SIM5218 modem\n\t9001  G"..., 4096) = 4096
read(3, "aker X6/X6U\n\t009a  Phantom C6\n\t0"..., 4096) = 4096
read(3, "Mbps Adapter\n05df  Silicon Visio"..., 4096) = 4096
read(3, "cs Co., Ltd\n0607  Bridge Informa"..., 4096) = 4096
read(3, "r CrystalEye Webcam\n\ta102  Acer/"..., 4096) = 4096
read(3, "layer\n\t821c  MP3 Player\n\t821d  M"..., 4096) = 4096
read(3, " XT Camera [remote mode]\n\t4017  "..., 4096) = 4096
read(3, "l Connect Modem\n\t000b  WireSpeed"..., 4096) = 4096
read(3, "apanese Keyboard\n06d6  Aashima T"..., 4096) = 4096
read(3, " GamePad\n\tb000  Hercules DJ Cons"..., 4096) = 4096
read(3, "\t4586  XBox Device\n\t4588  XBox D"..., 4096) = 4096
read(3, "g. Co., Ltd\n077b  Linksys\n\t08be "..., 4096) = 4096
read(3, "0790  Pro-Image Manufacturing Co"..., 4096) = 4096
read(3, "Voice Recorder DS-330\n\t0207  Dig"..., 4096) = 4096
brk(0)                                  = 0x1007000
brk(0x1028000)                          = 0x1028000
read(3, "eader (UISMA)\n\t0012  Reader (UIS"..., 4096) = 4096
read(3, "02.11n Wireless N Adapter(rev.B)"..., 4096) = 4096
read(3, "imax 410\n\t000e  Digimax 360\n\t001"..., 4096) = 4096
read(3, "chi Maxell, Ltd\n\t3102  Bluetooth"..., 4096) = 4096
read(3, "3  Pocket DV Digital Camera\n\t010"..., 4096) = 4096
read(3, "\t3402  AES3400 Sensor\n\t3403  AES"..., 4096) = 4096
read(3, "0 (X750_USB)\n0925  Lakeview Rese"..., 4096) = 4096
read(3, "0U A/V Capture Audio\n\ta004  Conv"..., 4096) = 4096
read(3, "\t0007  Reader V2\n\t0008  ZFG-9800"..., 4096) = 4096
read(3, " 82-key backlit keyboard\n0a35  R"..., 4096) = 4096
read(3, "Corp.\n0a5f  Zebra\n\t0009  LP2844 "..., 4096) = 4096
read(3, "unication Camera VGP-VCC1\n\tc302 "..., 4096) = 4096
read(3, "\n0b0b  Datamax-O'Neil\n\t106e  Dat"..., 4096) = 4096
read(3, "nology, Inc.\n0b85  Elkat Electro"..., 4096) = 4096
read(3, " SmartPhone Sync\n\t0a6c  SmartPho"..., 4096) = 4096
read(3, " Mass Storage Device\n\t0178  Mass"..., 4096) = 4096
read(3, "\n\t0204  Metrologic MS7120 Barcod"..., 4096) = 4096
read(3, "0360/MT9V011 or MI0360SOC/MT9V11"..., 4096) = 4096
brk(0)                                  = 0x1028000
brk(0x1049000)                          = 0x1049000
read(3, "td\n0ccc  Domex Technology Corp.\n"..., 4096) = 4096
read(3, "y, Ltd\n0d3d  Tangtop Technology "..., 4096) = 4096
read(3, "  Mass Storage Controller\n\t5200 "..., 4096) = 4096
read(3, "hen Yeh Enterprise Corp.\n0db7  E"..., 4096) = 4096
read(3, "ss Network USB Adapter\n\t9075  WL"..., 4096) = 4096
read(3, "\t1204  Gmini XS 200\n\t1306  504 P"..., 4096) = 4096
read(3, " Co., Ltd\n0f2f  Priva Design Ser"..., 4096) = 4096
read(3, "ass Storage] \n\te0ef  C905 Phone "..., 4096) = 4096
read(3, "  Winbond Electronics Corp. [hex"..., 4096) = 4096
read(3, " Inc.\n\t3009  eHome Infrared Tran"..., 4096) = 4096
read(3, " 1650-16 16-Port RS-232/422/485\n"..., 4096) = 4096
read(3, "reless Modem\n\t900a  Gobi 2000 Wi"..., 4096) = 4096
read(3, " Wireless Terminal\n\t1037  Ideos\n"..., 4096) = 4096
read(3, "der\n13b0  PerkinElmer Optoelectr"..., 4096) = 4096
read(3, "  DataTraveler 2.0 4GB Flash Dri"..., 4096) = 4096
read(3, " Inc.\n14b0  StarTech.com Ltd.\n14"..., 4096) = 4096
read(3, " USB Wireless Card\n\t0012  WUBR-2"..., 4096) = 4096
read(3, "dem\n\t1a17  Agilent Technologies "..., 4096) = 4096
brk(0)                                  = 0x1049000
brk(0x106a000)                          = 0x106a000
read(3, "801  U43\n16b5  Persentec, Inc.\n\t"..., 4096) = 4096
read(3, "asynote MX66-208W\n\taa11  Web Cam"..., 4096) = 4096
read(3, "(v2) based USB DVB-T receiver\n\tf"..., 4096) = 4096
read(3, "nfotech Logistic, LLC\n19b9  Data"..., 4096) = 4096
read(3, "35  PC Camera/Webcam controller\n"..., 4096) = 4096
read(3, "CS, INC.\n1ca0  ACCARIO Inc.\n1cac"..., 4096) = 4096
read(3, "5523]\n\t3a03  DWL-G132 (no firmwa"..., 4096) = 4096
read(3, " 1.0 (TDMA) chipset\n\t1801  Rainb"..., 4096) = 4096
read(3, "0\n\t100a  MPIO FL300\n\t100b  MPIO "..., 4096) = 4096
read(3, "AIO Printer 926\n\t5116  AIO Print"..., 4096) = 4096
read(3, " 802.11g Adapter [Intersil ISL38"..., 4096) = 4096
read(3, "ller from (Intel/CSR)\n\t1110  PRO"..., 4096) = 4096
read(3, "d protocols\n\n# Syntax:\n# C class"..., 4096) = 4096
read(3, "  VCR Audio\nAT 070a  Video Disc "..., 4096) = 4096
read(3, "  Bicylce Crank\n\t0ce  Handle Bar"..., 4096) = 4096
read(3, "Locking Scroll Lock\n\t085  Keypad"..., 4096) = 4096
read(3, "tion\n\t062  Closed Caption Select"..., 4096) = 4096
brk(0)                                  = 0x106a000
brk(0x108b000)                          = 0x108b000
read(3, "\n\t234  AC Scroll Down\n\t235  AC S"..., 4096) = 4096
read(3, "oning\n\t038  Cursor Mode\n\t039  Cu"..., 4096) = 4096
read(3, "e Limit Expired\n\t044  Charging\n\t"..., 4096) = 4096
read(3, "\n\n# HID Descriptor bCountryCode\n"..., 4096) = 1187
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3
getdents(3, /* 13 entries */, 32768)    = 312
close(3)                                = 0
uname({sys="Linux", node="ulquiorra.espada", ...}) = 0
stat("/sys/bus/usb/devices", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
pipe([3, 4])                            = 0
timerfd_create(CLOCK_MONOTONIC, 0x800 /* TFD_??? */) = 5
open("/sys/bus/usb/devices", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 6
getdents(6, /* 31 entries */, 32768)    = 880
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) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb1/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 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("/sys/bus/usb/devices/usb2/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "2\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb2/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 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("/sys/bus/usb/devices/usb3/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "3\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb3/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb3/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("/sys/bus/usb/devices/usb4/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "4\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb4/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 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("/sys/bus/usb/devices/usb5/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "5\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb5/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 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("/sys/bus/usb/devices/usb6/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "6\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb6/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 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("/sys/bus/usb/devices/usb7/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "7\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb7/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb7/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("/sys/bus/usb/devices/usb8/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "8\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb8/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb8/descriptors", O_RDONLY) = 7
read(7, "\22\1\0\2\t\0\1@k\35\2\0\2\3\3\2\1\1", 18) = 18
close(7)                                = 0
open("/sys/bus/usb/devices/usb9/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "9\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb9/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb9/descriptors", O_RDONLY) = 7
read(7, "\22\1\0\3\t\0\3\tk\35\3\0\2\3\3\2\1\1", 18) = 18
close(7)                                = 0
open("/sys/bus/usb/devices/usb10/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "10\n", 4096)                   = 3
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb10/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb10/descriptors", O_RDONLY) = 7
read(7, "\22\1\0\2\t\0\1@k\35\2\0\2\3\3\2\1\1", 18) = 18
close(7)                                = 0
open("/sys/bus/usb/devices/usb11/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "11\n", 4096)                   = 3
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb11/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/usb11/descriptors", O_RDONLY) = 7
read(7, "\22\1\0\3\t\0\3\tk\35\3\0\2\3\3\2\1\1", 18) = 18
close(7)                                = 0
open("/sys/bus/usb/devices/1-2/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "1\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/1-2/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "2\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/1-2/descriptors", O_RDONLY) = 7
read(7, "\22\1\0\2\377\377\377@\251\4\5\31\3\6\1\2\0\1", 18) = 18
close(7)                                = 0
open("/sys/bus/usb/devices/5-4/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "5\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/5-4/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "2\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/5-4/descriptors", O_RDONLY) = 7
read(7, "\22\1\20\1\0\0\0\10\201\n\1\1\20\1\1\2\0\1", 18) = 18
close(7)                                = 0
open("/sys/bus/usb/devices/5-5/busnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "5\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/5-5/devnum", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
read(7, "3\n", 4096)                    = 2
close(7)                                = 0
munmap(0x7f0aa9006000, 4096)            = 0
open("/sys/bus/usb/devices/5-5/descriptors", O_RDONLY) = 7
read(7, "\22\1\20\1\0\0\0\10X\4:\0\0\1\1\2\0\1", 18) = 18
close(7)                                = 0
getdents(6, /* 0 entries */, 32768)     = 0
close(6)                                = 0
open("/sys/bus/usb/devices/usb1/descriptors", O_RDONLY) = 6
read(6, "\22\1\0\2\t\0\0@k\35\2\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
fstat(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 1), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0aa9006000
write(1, "Bus 001 Device 001: ID 1d6b:0002"..., 63Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
) = 63
open("/sys/bus/usb/devices/usb2/descriptors", O_RDONLY) = 6
read(6, "\22\1\0\2\t\0\0@k\35\2\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
write(1, "Bus 002 Device 001: ID 1d6b:0002"..., 63Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
) = 63
open("/sys/bus/usb/devices/usb3/descriptors", O_RDONLY) = 6
read(6, "\22\1\0\2\t\0\0@k\35\2\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
write(1, "Bus 003 Device 001: ID 1d6b:0002"..., 63Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
) = 63
open("/sys/bus/usb/devices/usb4/descriptors", O_RDONLY) = 6
read(6, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
write(1, "Bus 004 Device 001: ID 1d6b:0001"..., 63Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
) = 63
open("/sys/bus/usb/devices/usb5/descriptors", O_RDONLY) = 6
read(6, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
write(1, "Bus 005 Device 001: ID 1d6b:0001"..., 63Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
) = 63
open("/sys/bus/usb/devices/usb6/descriptors", O_RDONLY) = 6
read(6, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
write(1, "Bus 006 Device 001: ID 1d6b:0001"..., 63Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
) = 63
open("/sys/bus/usb/devices/usb7/descriptors", O_RDONLY) = 6
read(6, "\22\1\20\1\t\0\0@k\35\1\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
write(1, "Bus 007 Device 001: ID 1d6b:0001"..., 63Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
) = 63
open("/sys/bus/usb/devices/usb8/descriptors", O_RDONLY) = 6
read(6, "\22\1\0\2\t\0\1@k\35\2\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
write(1, "Bus 008 Device 001: ID 1d6b:0002"..., 63Bus 008 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
) = 63
open("/sys/bus/usb/devices/usb9/descriptors", O_RDONLY) = 6
read(6, "\22\1\0\3\t\0\3\tk\35\3\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
write(1, "Bus 009 Device 001: ID 1d6b:0003"..., 63Bus 009 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
) = 63
open("/sys/bus/usb/devices/usb10/descriptors", O_RDONLY) = 6
read(6, "\22\1\0\2\t\0\1@k\35\2\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
write(1, "Bus 010 Device 001: ID 1d6b:0002"..., 63Bus 010 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
) = 63
open("/sys/bus/usb/devices/usb11/descriptors", O_RDONLY) = 6
read(6, "\22\1\0\3\t\0\3\tk\35\3\0\2\3\3\2\1\1", 18) = 18
close(6)                                = 0
write(1, "Bus 011 Device 001: ID 1d6b:0003"..., 63Bus 011 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
) = 63
open("/sys/bus/usb/devices/1-2/descriptors", O_RDONLY) = 6
read(6, "\22\1\0\2\377\377\377@\251\4\5\31\3\6\1\2\0\1", 18) = 18
close(6)                                = 0
write(1, "Bus 001 Device 002: ID 04a9:1905"..., 63Bus 001 Device 002: ID 04a9:1905 Canon, Inc. CanoScan LiDE 200
) = 63
open("/sys/bus/usb/devices/5-4/descriptors", O_RDONLY) = 6
read(6, "\22\1\20\1\0\0\0\10\201\n\1\1\20\1\1\2\0\1", 18) = 18
close(6)                                = 0
write(1, "Bus 005 Device 002: ID 0a81:0101"..., 67Bus 005 Device 002: ID 0a81:0101 Chesen Electronics Corp. Keyboard
) = 67
open("/sys/bus/usb/devices/5-5/descriptors", O_RDONLY) = 6
read(6, "\22\1\20\1\0\0\0\10X\4:\0\0\1\1\2\0\1", 18) = 18
close(6)                                = 0
write(1, "Bus 005 Device 003: ID 0458:003a"..., 115Bus 005 Device 003: ID 0458:003a KYE Systems Corp. (Mouse Systems) NetScroll+ Mini Traveler / Genius NetScroll 120
) = 115
close(3)                                = 0
close(4)                                = 0
close(5)                                = 0
exit_group(0)                           = ?
Comment 6 Lukáš Nykrýn 2012-04-03 12:19:57 UTC 
Your strace is a little bit different from my, so can you please try this newer build of usbutils with mentioned patch?
http://lnykryn.fedorapeople.org/usbutils/
Comment 7 Reartes Guillermo 2012-04-03 22:10:38 UTC 
Created attachment 574996 [details]
strace with the patched lsusb

F17 host
Comment 8 Reartes Guillermo 2012-04-03 22:15:47 UTC 
Created attachment 574997 [details]
strace, upatched, F16, lsusb -t does not complete, must ctrl+c it.
Comment 9 Lukáš Nykrýn 2012-04-04 08:47:25 UTC 
This seems to me as two independent issues. The error message is cause by missing driver symlink and lsusb-t only reads target of it and prints it. That should not cause any hang.
I have tried three different machines with fedora 16 and current version of usbutils and I didn't see any delay. But I will look more into it.
Comment 10 Reartes Guillermo 2012-04-04 12:14:54 UTC 
The delay happens only with F16 on a Dell e4310.
Comment 11 Lukáš Nykrýn 2012-04-05 09:01:06 UTC 
I probably can't solve the hanging problem without more information. Are you able to debug the code and find the place where it hangs?
Comment 12 Lukáš Nykrýn 2012-04-10 13:04:51 UTC 
Or I can prepare some modified version of lsusb which should be more verbose and show us where the problem is.
Comment 13 Lukáš Nykrýn 2012-04-19 08:35:23 UTC 
Upstream has accepted my patch from comment #3, so I will close this bug. For the hanging issue I have created clone 814087.
Comment 14 Fedora Update System 2012-04-19 08:43:44 UTC 
usbutils-004-4.fc17 has been submitted as an update for Fedora 17.
https://admin.fedoraproject.org/updates/usbutils-004-4.fc17
Comment 15 Fedora Update System 2012-04-20 02:26:02 UTC 
Package usbutils-004-4.fc17:
* should fix your issue,
* was pushed to the Fedora 17 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing usbutils-004-4.fc17'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2012-6231/usbutils-004-4.fc17
then log in and leave karma (feedback).
Comment 16 Fedora Update System 2012-05-02 20:54:11 UTC 
usbutils-004-4.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.
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