Attachment 1459915 Details for Bug 1603104 – gdb info for drive mirror on 07192018

gdb info for drive mirror on 07192018

gdb_debug_info_all_threads-DriveMirror-07192018 (text/plain), 24.91 KB, created by Gu Nini on 2018-07-19 07:40:36 UTC

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Creator: Gu Nini

Created: 2018-07-19 07:40:36 UTC

Size: 24.91 KB

patch

obsolete

>[root@ibm-x3650m3-04 home]# gdb /usr/libexec/qmeu-kvm core.1193
>GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-113.el7
>Copyright (C) 2013 Free Software Foundation, Inc.
>License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>This is free software: you are free to change and redistribute it.
>There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
>and "show warranty" for details.
>This GDB was configured as "x86_64-redhat-linux-gnu".
>For bug reporting instructions, please see:
><http://www.gnu.org/software/gdb/bugs/>...
>/usr/libexec/qmeu-kvm: No such file or directory.
>[New LWP 1193]
>[New LWP 1226]
>[New LWP 1219]
>[New LWP 1224]
>[New LWP 1194]
>[New LWP 1290]
>[New LWP 1222]
>[New LWP 1230]
>[New LWP 1300]
>Reading symbols from /usr/libexec/qemu-kvm...Reading symbols from /usr/lib/debug/usr/libexec/qemu-kvm.debug...done.
>done.
>[Thread debugging using libthread_db enabled]
>Using host libthread_db library "/lib64/libthread_db.so.1".
>
>Core was generated by `/usr/libexec/qemu-kvm -name avocado-vt-vm1 -sandbox off -machine pc -nodefaults'.
>Program terminated with signal 6, Aborted.
>#0  0x00007f8949273207 in raise () from /lib64/libc.so.6
>Missing separate debuginfos, use: debuginfo-install boost-iostreams-1.53.0-27.el7.x86_64 boost-random-1.53.0-27.el7.x86_64 boost-system-1.53.0-27.el7.x86_64 boost-thread-1.53.0-27.el7.x86_64 bzip2-libs-1.0.6-13.el7.x86_64 celt051-0.5.1.3-8.el7.x86_64 cyrus-sasl-gssapi-2.1.26-23.el7.x86_64 cyrus-sasl-lib-2.1.26-23.el7.x86_64 cyrus-sasl-md5-2.1.26-23.el7.x86_64 cyrus-sasl-plain-2.1.26-23.el7.x86_64 elfutils-libelf-0.172-2.el7.x86_64 elfutils-libs-0.172-2.el7.x86_64 glib2-2.56.1-1.el7.x86_64 glibc-2.17-259.el7.x86_64 glusterfs-api-3.12.2-12.el7.x86_64 glusterfs-libs-3.12.2-12.el7.x86_64 gmp-6.0.0-15.el7.x86_64 gnutls-3.3.29-6.el7.x86_64 gperftools-libs-2.6.1-1.el7.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.15.1-32.el7.x86_64 libacl-2.2.51-14.el7.x86_64 libaio-0.3.109-13.el7.x86_64 libattr-2.4.46-13.el7.x86_64 libblkid-2.23.2-57.el7.x86_64 libcacard-2.5.2-2.el7.x86_64 libcap-2.22-9.el7.x86_64 libcom_err-1.42.9-13.el7.x86_64 libcurl-7.29.0-50.el7.x86_64 libdb-5.3.21-24.el7.x86_64 libffi-3.0.13-18.el7.x86_64 libgcc-4.8.5-36.el7.x86_64 libgcrypt-1.5.3-14.el7.x86_64 libgpg-error-1.12-3.el7.x86_64 libibumad-17.2-2.el7.x86_64 libibverbs-17.2-2.el7.x86_64 libidn-1.28-4.el7.x86_64 libiscsi-1.9.0-7.el7.x86_64 libjpeg-turbo-1.2.90-6.el7.x86_64 libmount-2.23.2-57.el7.x86_64 libnl3-3.2.28-4.el7.x86_64 libpng-1.5.13-7.el7_2.x86_64 librados2-10.2.5-4.el7.x86_64 librbd1-10.2.5-4.el7.x86_64 librdmacm-17.2-2.el7.x86_64 libseccomp-2.3.1-3.el7.x86_64 libselinux-2.5-13.el7.x86_64 libssh2-1.4.3-12.el7.x86_64 libstdc++-4.8.5-36.el7.x86_64 libtasn1-4.10-1.el7.x86_64 libusbx-1.0.21-1.el7.x86_64 libuuid-2.23.2-57.el7.x86_64 lz4-1.7.5-2.el7.x86_64 lzo-2.06-8.el7.x86_64 nettle-2.7.1-8.el7.x86_64 nspr-4.19.0-1.el7_5.x86_64 nss-3.36.0-5.el7_5.x86_64 nss-softokn-freebl-3.36.0-5.el7_5.x86_64 nss-util-3.36.0-1.el7_5.x86_64 numactl-libs-2.0.9-7.el7.x86_64 openldap-2.4.44-18.el7.x86_64 openssl-libs-1.0.2k-15.el7.x86_64 opus-1.0.2-6.el7.x86_64 p11-kit-0.23.5-3.el7.x86_64 pcre-8.32-17.el7.x86_64 pixman-0.34.0-1.el7.x86_64 snappy-1.1.0-3.el7.x86_64 spice-server-0.14.0-5.el7.x86_64 systemd-libs-219-58.el7.x86_64 usbredir-0.7.1-3.el7.x86_64 xz-libs-5.2.2-1.el7.x86_64 zlib-1.2.7-17.el7.x86_64
>(gdb) 
>(gdb) 
>(gdb) t a a bt fu
>
>Thread 9 (Thread 0x7f89417a6700 (LWP 1300)):
>#0  0x00007f8949617cbf in do_futex_wait () at /lib64/libpthread.so.0
>#1  0x00007f8949617d97 in __new_sem_wait_slow () at /lib64/libpthread.so.0
>#2  0x00007f8949617e35 in sem_timedwait () at /lib64/libpthread.so.0
>#3  0x000055eb5f7e04f7 in qemu_sem_timedwait (sem=sem@entry=0x55eb629e7e38, ms=ms@entry=10000) at util/qemu-thread-posix.c:292
>        rc = <optimized out>
>        ts = {tv_sec = 1531971240, tv_nsec = 575773000}
>        __PRETTY_FUNCTION__ = "qemu_sem_timedwait"
>        __func__ = "qemu_sem_timedwait"
>#4  0x000055eb5f7dbdb8 in worker_thread (opaque=0x55eb629e7dc0) at util/thread-pool.c:92
>        req = <optimized out>
>        ret = <optimized out>
>        pool = 0x55eb629e7dc0
>#5  0x00007f8949611dd5 in start_thread () at /lib64/libpthread.so.0
>#6  0x00007f894933aead in clone () at /lib64/libc.so.6
>
>Thread 8 (Thread 0x7f893eea0700 (LWP 1230)):
>#0  0x00007f89493318d7 in ioctl () at /lib64/libc.so.6
>#1  0x000055eb5f4ead25 in kvm_vcpu_ioctl (cpu=cpu@entry=0x55eb62e1e000, type=type@entry=44672) at /usr/src/debug/qemu-2.12.0/accel/kvm/kvm-all.c:2105
>        ret = <optimized out>
>        arg = <optimized out>
>        ap = {{gp_offset = 16, fp_offset = 0, overflow_arg_area = 0x7f893ee9d800, reg_save_area = 0x7f893ee9d7c0}}
>#2  0x000055eb5f4eadf3 in kvm_cpu_exec (cpu=cpu@entry=0x55eb62e1e000) at /usr/src/debug/qemu-2.12.0/accel/kvm/kvm-all.c:1942
>        attrs = {unspecified = 0, secure = 0, user = 1, requester_id = 39936}
>        run = <optimized out>
>        ret = <optimized out>
>        run_ret = <optimized out>
>#3  0x000055eb5f4c8996 in qemu_kvm_cpu_thread_fn (arg=0x55eb62e1e000) at /usr/src/debug/qemu-2.12.0/cpus.c:1215
>        cpu = 0x55eb62e1e000
>        r = <optimized out>
>#4  0x00007f8949611dd5 in start_thread () at /lib64/libpthread.so.0
>#5  0x00007f894933aead in clone () at /lib64/libc.so.6
>
>Thread 7 (Thread 0x7f89406a3700 (LWP 1222)):
>#0  0x00007f89493318d7 in ioctl () at /lib64/libc.so.6
>#1  0x000055eb5f4ead25 in kvm_vcpu_ioctl (cpu=cpu@entry=0x55eb62d7e000, type=type@entry=44672) at /usr/src/debug/qemu-2.12.0/accel/kvm/kvm-all.c:2105
>        ret = <optimized out>
>        arg = <optimized out>
>        ap = {{gp_offset = 16, fp_offset = 21995, overflow_arg_area = 0x7f89406a0800, reg_save_area = 0x7f89406a07c0}}
>#2  0x000055eb5f4eadf3 in kvm_cpu_exec (cpu=cpu@entry=0x55eb62d7e000) at /usr/src/debug/qemu-2.12.0/accel/kvm/kvm-all.c:1942
>        attrs = {unspecified = 1, secure = 0, user = 0, requester_id = 4608}
>        run = <optimized out>
>        ret = <optimized out>
>        run_ret = <optimized out>
>#3  0x000055eb5f4c8996 in qemu_kvm_cpu_thread_fn (arg=0x55eb62d7e000) at /usr/src/debug/qemu-2.12.0/cpus.c:1215
>        cpu = 0x55eb62d7e000
>---Type <return> to continue, or q <return> to quit---
>        r = <optimized out>
>#4  0x00007f8949611dd5 in start_thread () at /lib64/libpthread.so.0
>#5  0x00007f894933aead in clone () at /lib64/libc.so.6
>
>Thread 6 (Thread 0x7f883cbff700 (LWP 1290)):
>#0  0x00007f8949615965 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x000055eb5f7e0339 in qemu_cond_wait_impl (cond=cond@entry=0x55eb62993e60, mutex=mutex@entry=0x55eb62993e98, file=file@entry=0x55eb5f949d47 "ui/vnc-jobs.c", line=line@entry=212)
>    at util/qemu-thread-posix.c:164
>        err = <optimized out>
>        __PRETTY_FUNCTION__ = "qemu_cond_wait_impl"
>        __func__ = "qemu_cond_wait_impl"
>#2  0x000055eb5f6ff0ff in vnc_worker_thread_loop (queue=queue@entry=0x55eb62993e60) at ui/vnc-jobs.c:212
>        job = <optimized out>
>        entry = <optimized out>
>        tmp = <optimized out>
>        vs = 
>            {sioc = 0x0, ioc = 0x0, ioc_tag = 0, disconnecting = 0, dirty = {{0, 0, 0} <repeats 2048 times>}, lossy_rect = 0x0, vd = 0x0, update = VNC_STATE_UPDATE_NONE, job_update = VNC_STATE_UPDATE_NONE, has_dirty = 0, features = 0, absolute = 0, last_x = 0, last_y = 0, last_bmask = 0, client_width = 0, client_height = 0, share_mode = 0, vnc_encoding = 0, major = 0, minor = 0, auth = 0, subauth = 0, challenge = '\000' <repeats 15 times>, tls = 0x0, sasl = {conn = 0x0, wantSSF = false, runSSF = false, waitWriteSSF = 0, encoded = 0x0, encodedLength = 0, encodedRawLength = 0, encodedOffset = 0, username = 0x0, mechlist = 0x0}, encode_ws = false, websocket = false, info = 0x0, force_update_offset = 0, throttle_output_offset = 0, output = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, input = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, write_pixels = 0x0, client_pf = {bits_per_pixel = 0 '\000', bytes_per_pixel = 0 '\000', depth = 0 '\000', rmask = 0, gmask = 0, bmask = 0, amask = 0, rshift = 0 '\000', gshift = 0 '\000', bshift = 0 '\000', ashift = 0 '\000', rmax = 0 '\000', gmax = 0 '\000', bmax = 0 '\000', amax = 0 '\000', rbits = 0 '\000', gbits = 0 '\000', bbits = 0 '\000', abits = 0 '\000'}, client_format = 0, client_be = false, audio_cap = 0x0, as = {freq = 0, nchannels = 0, fmt = AUD_FMT_U8, endianness = 0}, read_handler = 0x0, read_handler_expect = 0, modifiers_state = '\000' <repeats 255 times>, abort = false, output_mutex = {lock = {__data = {__lock = 0, __count = 0, __owner = 0, __nusers = 0, __kind = 0, __spins = 0, __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, __size = '\000' <repeats 39 times>, __align = 0}, initialized = false}, bh = 0x0, jobs_buffer = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, tight = {type = 0, quality = 0 '\000', compression = 0 '\000', pixel24 = 0 '\000', tight = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, tmp = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, zlib = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, gradient = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, png = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, levels = {0, 0, 0, 0}, stream = {{next_in = 0x0, avail_in = 0, total_in = 0, next_out = 0x0, avail_out = 0, total_out = 0, msg = 0x0, state = 0x0, zalloc = 0x0, zfree = 0x0, opaque = 0x0, data_type = 0, adler = 0, reserved = 0}, {next_in = 0x0, avail_in = 0, total_in = 0, next_out = 0x0, avail_out = 0, total_out = 0, msg = 0x0, state = 0x0, zalloc = 0x0, zfree = 0x0, opaque = 0x0, data_type = 0, adler = 0, reserved = 0}, {next_in = 0x0, avail_in = 0, total_in = 0, next_out = 0x0, avail_out = 0, total_out = 0, msg = 0x0, state = 0x0, zalloc = 0x0, zfree = 0x0, opaque = 0x0, data_type = 0, adler = 0, reserved = 0}, {next_in = 0x0, avail_in = 0, total_in = 0, next_out = 0x0, avail_out = 0, total_out = 0, msg = 0x0, state = 0x0, zalloc = 0x0, zfree = 0x0, opaque = 0x0, data_type = 0, adler = 0, reserved = 0}}}, zlib = {zlib = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, tmp = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, stream = {next_in = 0x0, avail_in = 0, total_in = 0, next_out = 0x0, avail_out = 0, total_out = 0, msg = 0x0, state = 0x0, zalloc = 0x0, zfree = 0x0, opaque = 0x0, data_type = 0, adler = 0, reserved = 0}, level = 0}, hextile = {send_tile = 0x0}, zrle = {type = 0, fb = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, zrle = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, tmp = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, zlib = {name = 0x0, capacity = 0, offset = 0, avg_size = 0, buffer = 0x0}, stream = {next_in = 0x0, avail_in = 0, total_in = 0, next_out = 0x0, avail_out = 0, total_out = 0, msg = 0x0, state = 0x0, zalloc = 0x0, zfree = 0x0, opaque = 0x0, data_type = 0, adler = 0, reserved = 0}, palette = {pool = {{idx = 0, color = 0, next = {le_next = 0x0, le_prev = 0x0}} <repeats 256 times>}, size = 0, max = 0, bpp = 0, table = {{lh_first = 0x0} <repeats 256 times>}}}, zywrle = {buf = {0 <repeats 4096 times>}}, mouse_mode_notifier = {notify = 0x0, node = {le_next = 0x0, le_prev = 0x0}}, next = {tqe_next = 0x0, tqe_prev = 0x0}}
>        n_rectangles = <optimized out>
>        saved_offset = <optimized out>
>#3  0x000055eb5f6ff6c8 in vnc_worker_thread (arg=0x55eb62993e60) at ui/vnc-jobs.c:319
>        queue = 0x55eb62993e60
>#4  0x00007f8949611dd5 in start_thread () at /lib64/libpthread.so.0
>#5  0x00007f894933aead in clone () at /lib64/libc.so.6
>
>---Type <return> to continue, or q <return> to quit---
>Thread 5 (Thread 0x7f8941fa7700 (LWP 1194)):
>#0  0x00007f89493351c9 in syscall () at /lib64/libc.so.6
>#1  0x000055eb5f7e0760 in qemu_event_wait (val=<optimized out>, f=<optimized out>) at /usr/src/debug/qemu-2.12.0/include/qemu/futex.h:29
>        value = <optimized out>
>        __PRETTY_FUNCTION__ = "qemu_event_wait"
>#2  0x000055eb5f7e0760 in qemu_event_wait (ev=ev@entry=0x55eb604646c8 <rcu_call_ready_event>) at util/qemu-thread-posix.c:445
>        value = <optimized out>
>        __PRETTY_FUNCTION__ = "qemu_event_wait"
>#3  0x000055eb5f7f0c8e in call_rcu_thread (opaque=<optimized out>) at util/rcu.c:261
>        tries = 0
>        n = <optimized out>
>        node = <optimized out>
>#4  0x00007f8949611dd5 in start_thread () at /lib64/libpthread.so.0
>#5  0x00007f894933aead in clone () at /lib64/libc.so.6
>
>Thread 4 (Thread 0x7f893fea2700 (LWP 1224)):
>#0  0x00007f89493318d7 in ioctl () at /lib64/libc.so.6
>#1  0x000055eb5f4ead25 in kvm_vcpu_ioctl (cpu=cpu@entry=0x55eb62dde000, type=type@entry=44672) at /usr/src/debug/qemu-2.12.0/accel/kvm/kvm-all.c:2105
>        ret = <optimized out>
>        arg = <optimized out>
>        ap = {{gp_offset = 16, fp_offset = 21995, overflow_arg_area = 0x7f893fe9f800, reg_save_area = 0x7f893fe9f7c0}}
>#2  0x000055eb5f4eadf3 in kvm_cpu_exec (cpu=cpu@entry=0x55eb62dde000) at /usr/src/debug/qemu-2.12.0/accel/kvm/kvm-all.c:1942
>        attrs = {unspecified = 1, secure = 0, user = 0, requester_id = 3072}
>        run = <optimized out>
>        ret = <optimized out>
>        run_ret = <optimized out>
>#3  0x000055eb5f4c8996 in qemu_kvm_cpu_thread_fn (arg=0x55eb62dde000) at /usr/src/debug/qemu-2.12.0/cpus.c:1215
>        cpu = 0x55eb62dde000
>        r = <optimized out>
>#4  0x00007f8949611dd5 in start_thread () at /lib64/libpthread.so.0
>#5  0x00007f894933aead in clone () at /lib64/libc.so.6
>
>Thread 3 (Thread 0x7f8940ea4700 (LWP 1219)):
>#0  0x00007f89493302cf in ppoll () at /lib64/libc.so.6
>#1  0x000055eb5f7dc7cb in qemu_poll_ns (__ss=0x0, __timeout=0x0, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/bits/poll2.h:77
>#2  0x000055eb5f7dc7cb in qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>, timeout=timeout@entry=-1) at util/qemu-timer.c:322
>#3  0x000055eb5f7de515 in aio_poll (ctx=0x55eb629c9b80, blocking=blocking@entry=true) at util/aio-posix.c:629
>        node = <optimized out>
>        i = <optimized out>
>        ret = 0
>        progress = <optimized out>
>        timeout = -1
>        start = 128292063537040
>        __PRETTY_FUNCTION__ = "aio_poll"
>#4  0x000055eb5f5b1f4e in iothread_run (opaque=0x55eb629e7ea0) at iothread.c:64
>        iothread = 0x55eb629e7ea0
>#5  0x00007f8949611dd5 in start_thread () at /lib64/libpthread.so.0
>---Type <return> to continue, or q <return> to quit---
>#6  0x00007f894933aead in clone () at /lib64/libc.so.6
>
>Thread 2 (Thread 0x7f893f6a1700 (LWP 1226)):
>#0  0x00007f89493318d7 in ioctl () at /lib64/libc.so.6
>#1  0x000055eb5f4ead25 in kvm_vcpu_ioctl (cpu=cpu@entry=0x55eb62e00000, type=type@entry=44672) at /usr/src/debug/qemu-2.12.0/accel/kvm/kvm-all.c:2105
>        ret = <optimized out>
>        arg = <optimized out>
>        ap = {{gp_offset = 16, fp_offset = 0, overflow_arg_area = 0x7f893f69e800, reg_save_area = 0x7f893f69e7c0}}
>#2  0x000055eb5f4eadf3 in kvm_cpu_exec (cpu=cpu@entry=0x55eb62e00000) at /usr/src/debug/qemu-2.12.0/accel/kvm/kvm-all.c:1942
>        attrs = {unspecified = 0, secure = 0, user = 0, requester_id = 0}
>        run = <optimized out>
>        ret = <optimized out>
>        run_ret = <optimized out>
>#3  0x000055eb5f4c8996 in qemu_kvm_cpu_thread_fn (arg=0x55eb62e00000) at /usr/src/debug/qemu-2.12.0/cpus.c:1215
>        cpu = 0x55eb62e00000
>        r = <optimized out>
>#4  0x00007f8949611dd5 in start_thread () at /lib64/libpthread.so.0
>#5  0x00007f894933aead in clone () at /lib64/libc.so.6
>
>Thread 1 (Thread 0x7f89622d8dc0 (LWP 1193)):
>#0  0x00007f8949273207 in raise () at /lib64/libc.so.6
>#1  0x00007f89492748f8 in abort () at /lib64/libc.so.6
>#2  0x000055eb5f7e36f4 in error_handle_fatal (errp=<optimized out>, err=0x55eb641bc9c0) at util/error.c:38
>        errp = 0x55eb60464480 <error_abort>
>        err = 0x55eb641bc9c0
>#3  0x000055eb5f7e37cd in error_setv (errp=0x55eb60464480 <error_abort>, src=0x55eb5f95b26f "block/file-posix.c", line=649, func=0x55eb5f95bbf0 <__func__.26454> "raw_apply_lock_bytes", err_class=ERROR_CLASS_GENERIC_ERROR, fmt=<optimized out>, ap=0x7ffedca7c890, suffix=0x0) at util/error.c:71
>        err = 0x55eb641bc9c0
>        saved_errno = 77
>#4  0x000055eb5f7e395e in error_setg_internal (errp=errp@entry=0x55eb60464480 <error_abort>, src=src@entry=0x55eb5f95b26f "block/file-posix.c", line=<optimized out>, func=<optimized out>, fmt=<optimized out>) at util/error.c:95
>        ap = {{gp_offset = 48, fp_offset = 48, overflow_arg_area = 0x7ffedca7c970, reg_save_area = 0x7ffedca7c8b0}}
>#5  0x000055eb5f74ff4d in raw_apply_lock_bytes (fd=110, perm_lock_bits=11, shared_perm_lock_bits=18446744073709551595, unlock=unlock@entry=false, errp=errp@entry=0x55eb60464480 <error_abort>) at block/file-posix.c:655
>        off = <optimized out>
>        ret = -77
>        i = 0
>        __func__ = "raw_apply_lock_bytes"
>#6  0x000055eb5f7500cb in raw_handle_perm_lock (bs=<optimized out>, op=RAW_PL_PREPARE, new_perm=11, new_shared=21, errp=0x55eb60464480 <error_abort>) at block/file-posix.c:744
>        s = 0x55eb638fc940
>        ret = 0
>        local_err = 0x0
>        __PRETTY_FUNCTION__ = "raw_handle_perm_lock"
>#7  0x000055eb5f70707f in bdrv_check_perm (bs=bs@entry=0x55eb62c19400, q=0x0, 
>    q@entry=0xb16eef71413a2000, cumulative_perms=11, cumulative_shared_perms=21, ignore_children=ignore_children@entry=0x55eb62a70e40 = {...}, errp=errp@entry=0x55eb60464480 <error_abort>) at block.c:1691
>        drv = <optimized out>
>---Type <return> to continue, or q <return> to quit---
>        c = <optimized out>
>        ret = 11
>        __func__ = "bdrv_check_perm"
>        __PRETTY_FUNCTION__ = "bdrv_check_perm"
>#8  0x000055eb5f706edb in bdrv_check_update_perm (bs=0x55eb62c19400, q=0xb16eef71413a2000, 
>    q@entry=0x0, new_used_perm=new_used_perm@entry=11, new_shared_perm=new_shared_perm@entry=21, ignore_children=ignore_children@entry=0x55eb62a70e40 = {...}, errp=errp@entry=0x55eb60464480 <error_abort>) at block.c:1877
>        c = <optimized out>
>        cumulative_perms = <optimized out>
>        cumulative_shared_perms = <optimized out>
>        __PRETTY_FUNCTION__ = "bdrv_check_update_perm"
>        __func__ = "bdrv_check_update_perm"
>#9  0x000055eb5f70716c in bdrv_check_perm (errp=0x55eb60464480 <error_abort>, ignore_children=0x55eb62a70e40 = {...}, shared=21, perm=11, q=0x0, c=0x55eb63da0f00) at block.c:1890
>        ret = <optimized out>
>        cur_perm = 11
>        cur_shared = 21
>        drv = <optimized out>
>        c = 0x55eb63da0f00
>        ret = 11
>        __func__ = "bdrv_check_perm"
>        __PRETTY_FUNCTION__ = "bdrv_check_perm"
>#10 0x000055eb5f70716c in bdrv_check_perm (bs=0x55eb62c1c800, bs@entry=0xb, q=0x0, 
>    q@entry=0xb16eef71413a2000, cumulative_perms=0, cumulative_shared_perms=31, ignore_children=ignore_children@entry=0x55eb62a70e10 = {...}, errp=0x55eb60464480 <error_abort>, 
>    errp@entry=0x15) at block.c:1707
>        cur_perm = 11
>        cur_shared = 21
>        drv = <optimized out>
>        c = 0x55eb63da0f00
>        ret = 11
>        __func__ = "bdrv_check_perm"
>        __PRETTY_FUNCTION__ = "bdrv_check_perm"
>#11 0x000055eb5f706edb in bdrv_check_update_perm (bs=0xb, q=0xb16eef71413a2000, 
>    q@entry=0x0, new_used_perm=new_used_perm@entry=0, new_shared_perm=new_shared_perm@entry=31, ignore_children=ignore_children@entry=0x55eb62a70e10 = {...}, errp=0x15, 
>    errp@entry=0x55eb60464480 <error_abort>) at block.c:1877
>        c = <optimized out>
>        cumulative_perms = <optimized out>
>        cumulative_shared_perms = <optimized out>
>        __PRETTY_FUNCTION__ = "bdrv_check_update_perm"
>        __func__ = "bdrv_check_update_perm"
>#12 0x000055eb5f70769f in bdrv_child_try_set_perm (errp=0x55eb60464480 <error_abort>, ignore_children=0x55eb62a70e10 = {...}, shared=31, perm=0, q=0x0, c=0x55eb63da0370)
>    at block.c:1890
>        ret = <optimized out>
>        ret = 1615217792
>#13 0x000055eb5f70769f in bdrv_child_try_set_perm (c=0x55eb63da0370, perm=0, shared=31, errp=0x55eb60464480 <error_abort>) at block.c:1918
>        ret = 1615217792
>#14 0x000055eb5f74a85d in blk_set_perm (blk=0x55eb62a9db80, perm=perm@entry=0, shared_perm=shared_perm@entry=31, errp=errp@entry=0x55eb60464480 <error_abort>)
>    at block/block-backend.c:806
>---Type <return> to continue, or q <return> to quit---
>        ret = 0
>#15 0x000055eb5f75410e in mirror_exit (job=0x55eb6383b900, opaque=0x55eb64998c58) at block/mirror.c:513
>        data = 0x55eb64998c58
>        replace_aio_context = 0x0
>        src = 0x55eb62aa4800
>        target_bs = 0x55eb62c1c800
>        mirror_top_bs = 0x55eb64a16000
>        local_err = 0x0
>#16 0x000055eb5f70eaf2 in job_defer_to_main_loop_bh (opaque=0x55eb62d9ffa0) at job.c:968
>        data = 0x55eb62d9ffa0
>        job = <optimized out>
>        aio_context = 0x55eb629c97c0
>#17 0x000055eb5f7db331 in aio_bh_poll (bh=0x55eb62d71fb0) at util/async.c:90
>        bh = <optimized out>
>        bhp = <optimized out>
>        next = 0x55eb641bc090
>        ret = 1
>        deleted = false
>#18 0x000055eb5f7db331 in aio_bh_poll (ctx=ctx@entry=0x55eb629c97c0) at util/async.c:118
>        bh = <optimized out>
>        bhp = <optimized out>
>        next = 0x55eb641bc090
>        ret = 1
>        deleted = false
>#19 0x000055eb5f7de3d0 in aio_dispatch (ctx=0x55eb629c97c0) at util/aio-posix.c:436
>#20 0x000055eb5f7db20e in aio_ctx_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at util/async.c:261
>        ctx = <optimized out>
>#21 0x00007f89619db049 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
>#22 0x000055eb5f7dd6d7 in main_loop_wait () at util/main-loop.c:215
>        context = 0x55eb62a1ca50
>        pfds = <optimized out>
>        context = 0x55eb62a1ca50
>        ret = 1
>        ret = 1
>        timeout = 4294967295
>        timeout_ns = 756004411
>#23 0x000055eb5f7dd6d7 in main_loop_wait (timeout=<optimized out>) at util/main-loop.c:238
>        context = 0x55eb62a1ca50
>        ret = 1
>        ret = 1
>        timeout = 4294967295
>        timeout_ns = 756004411
>#24 0x000055eb5f7dd6d7 in main_loop_wait (nonblocking=nonblocking@entry=0) at util/main-loop.c:497
>        ret = 1
>        timeout = 4294967295
>        timeout_ns = 756004411
>#25 0x000055eb5f484f27 in main () at vl.c:1963
>---Type <return> to continue, or q <return> to quit---
>        i = <optimized out>
>        snapshot = <optimized out>
>        linux_boot = <optimized out>
>        initrd_filename = <optimized out>
>        kernel_filename = <optimized out>
>        kernel_cmdline = <optimized out>
>        boot_order = <optimized out>
>        boot_once = 0x55eb6297c9b0 "c"
>        ds = <optimized out>
>        opts = <optimized out>
>        machine_opts = <optimized out>
>        icount_opts = <optimized out>
>        accel_opts = <optimized out>
>        olist = <optimized out>
>        optind = 55
>        optarg = 0x7ffedca7f458 "tcp:0:5555,server,nowait"
>        loadvm = <optimized out>
>        machine_class = 0x0
>        cpu_model = <optimized out>
>        vga_model = 0x7ffedca7efdd "std"
>        qtest_chrdev = <optimized out>
>        qtest_log = <optimized out>
>        pid_file = <optimized out>
>        incoming = <optimized out>
>        userconfig = <optimized out>
>        nographic = <optimized out>
>        display_remote = <optimized out>
>        log_mask = <optimized out>
>        log_file = <optimized out>
>        trace_file = <optimized out>
>        maxram_size = <optimized out>
>        ram_slots = <optimized out>
>        vmstate_dump_file = <optimized out>
>        main_loop_err = 0x0
>        err = 0x0
>        list_data_dirs = <optimized out>
>        dir = <optimized out>
>        dirs = 0x0
>        bdo_queue = {sqh_first = 0x0, sqh_last = 0x7ffedca7ce80}
>        __func__ = "main"
>        __FUNCTION__ = "main"
>#26 0x000055eb5f484f27 in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:4768
>        i = <optimized out>
>        snapshot = <optimized out>
>        linux_boot = <optimized out>
>        initrd_filename = <optimized out>
>        kernel_filename = <optimized out>
>---Type <return> to continue, or q <return> to quit---
>        kernel_cmdline = <optimized out>
>        boot_order = <optimized out>
>        boot_once = 0x55eb6297c9b0 "c"
>        ds = <optimized out>
>        opts = <optimized out>
>        machine_opts = <optimized out>
>        icount_opts = <optimized out>
>        accel_opts = <optimized out>
>        olist = <optimized out>
>        optind = 55
>        optarg = 0x7ffedca7f458 "tcp:0:5555,server,nowait"
>        loadvm = <optimized out>
>        machine_class = 0x0
>        cpu_model = <optimized out>
>        vga_model = 0x7ffedca7efdd "std"
>        qtest_chrdev = <optimized out>
>        qtest_log = <optimized out>
>        pid_file = <optimized out>
>        incoming = <optimized out>
>        userconfig = <optimized out>
>        nographic = <optimized out>
>        display_remote = <optimized out>
>        log_mask = <optimized out>
>        log_file = <optimized out>
>        trace_file = <optimized out>
>        maxram_size = <optimized out>
>        ram_slots = <optimized out>
>        vmstate_dump_file = <optimized out>
>        main_loop_err = 0x0
>        err = 0x0
>        list_data_dirs = <optimized out>
>        dir = <optimized out>
>        dirs = 0x0
>        bdo_queue = {sqh_first = 0x0, sqh_last = 0x7ffedca7ce80}
>        __func__ = "main"
>        __FUNCTION__ = "main"
>(gdb) 
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Attachments on bug 1603104: 1459915 | 1469886