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[Qemu-devel] [Bug 1333651] Re: qemu-2.0 occasionally segfaults with Wind


From: Thomas Huth
Subject: [Qemu-devel] [Bug 1333651] Re: qemu-2.0 occasionally segfaults with Windows 2012R2
Date: Wed, 19 Jul 2017 11:25:56 -0000

Assuming this has been fixed by the patch that Stefan pointed out in
comment #1, so closing this ticket now (feel free to re-open if you
still can reproduce it with the latest version of QEMU)

** Changed in: qemu
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1333651

Title:
  qemu-2.0 occasionally segfaults with Windows 2012R2

Status in QEMU:
  Fix Released

Bug description:
  This is with qemu-2.0 (KVM), linux kernel 3.10.35, using qcow2 images 
directly accessed via libgfapi (glusterfs-3.4.2).
  Such a segfaults happens roughly once every 2 weeks and only for VMs with 
high network and/or disk activity.

  Guest OS with which we could reproduce this was always Windows Server
  2012R2 using virtio-win-0.1-75.

  vhost-net is active, the disks are attached as virtio-blk devices (see
  also XML definition from libvirt further below)

  Following are the backtraces for all threads:

  (gdb) threads
  Undefined command: "threads".  Try "help".
  (gdb) info threads
    Id   Target Id         Frame 
    32   Thread 0x7f5c1affd700 (LWP 16783) 0x00007f5c42639607 in ioctl () at 
../sysdeps/unix/syscall-template.S:81
    31   Thread 0x7f5bfe2fc700 (LWP 19906) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    30   Thread 0x7f5c45f87880 (LWP 16769) 0x00007f5c42637ff6 in __GI_ppoll 
(fds=0x7f5c48bcd750, nfds=74, 
      timeout=0x7fff92d94e60, address@hidden, address@hidden) at 
../sysdeps/unix/sysv/linux/ppoll.c:57
    29   Thread 0x7f5c1bfff700 (LWP 16781) 0x00007f5c42639607 in ioctl () at 
../sysdeps/unix/syscall-template.S:81
    28   Thread 0x7f5c28de1700 (LWP 16780) 0x00007f5c42639607 in ioctl () at 
../sysdeps/unix/syscall-template.S:81
    27   Thread 0x7f5c1a7fc700 (LWP 16784) __lll_lock_wait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
    26   Thread 0x7f5c295e2700 (LWP 16779) __lll_lock_wait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
    25   Thread 0x7f57b2ffd700 (LWP 18170) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    24   Thread 0x7f57c97fa700 (LWP 31326) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    23   Thread 0x7f57b3fff700 (LWP 5016) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    22   Thread 0x7f57c9ffb700 (LWP 25116) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    21   Thread 0x7f5c31f7c700 (LWP 16776) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    20   Thread 0x7f5c1b7fe700 (LWP 16782) __lll_lock_wait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
    19   Thread 0x7f57ca7fc700 (LWP 24029) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    18   Thread 0x7f57cbfff700 (LWP 19985) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    17   Thread 0x7f57c8ff9700 (LWP 31327) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    16   Thread 0x7f5bfcefa700 (LWP 19924) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    15   Thread 0x7f5c30ee7700 (LWP 16777) 0x00007f5c426421b3 in epoll_wait () 
at ../sysdeps/unix/syscall-template.S:81
    14   Thread 0x7f5c3dc17700 (LWP 16772) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    13   Thread 0x7f5bfd6fb700 (LWP 19907) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    12   Thread 0x7f5c18bff700 (LWP 16788) 0x00007f5c42637ded in poll () at 
../sysdeps/unix/syscall-template.S:81
    11   Thread 0x7f5c19ffb700 (LWP 16785) 0x00007f5c42639607 in ioctl () at 
../sysdeps/unix/syscall-template.S:81
    10   Thread 0x7f57caffd700 (LWP 20235) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    9    Thread 0x7f5c2bfff700 (LWP 16778) 0x00007f5c4290e43d in nanosleep () 
at ../sysdeps/unix/syscall-template.S:81
    8    Thread 0x7f5bfecfd700 (LWP 17854) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    7    Thread 0x7f5c3e418700 (LWP 16771) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    6    Thread 0x7f57b37fe700 (LWP 18169) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    5    Thread 0x7f5c3bb57700 (LWP 16774) 0x00007f5c4290e43d in nanosleep () 
at ../sysdeps/unix/syscall-template.S:81
    4    Thread 0x7f5c3c97f700 (LWP 16773) 0x00007f5c426421b3 in epoll_wait () 
at ../sysdeps/unix/syscall-template.S:81
    3    Thread 0x7f5c3277d700 (LWP 16775) pthread_cond_timedwait ()
      at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
    2    Thread 0x7f5c197fa700 (LWP 16786) 0x00007f5c42639607 in ioctl () at 
../sysdeps/unix/syscall-template.S:81
  * 1    Thread 0x7f57cb7fe700 (LWP 19986) event_notifier_set (e=0x124)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/util/event_notifier-posix.c:97
  (gdb) bt
  #0  event_notifier_set (e=0x124) at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/util/event_notifier-posix.c:97
  #1  0x00007f5c457145d1 in ?? () from /usr/lib64/libgfapi.so.0
  #2  0x00007f5c454d1d0a in synctask_wrap () from /usr/lib64/libglusterfs.so.0
  #3  0x00007f5c4259d760 in ?? () from /lib64/libc.so.6
  #4  0x0000000000000000 in ?? ()
  (gdb) thread 2
  [Switching to thread 2 (Thread 0x7f5c197fa700 (LWP 16786))]
  #0  0x00007f5c42639607 in ioctl () at ../sysdeps/unix/syscall-template.S:81
  81    ../sysdeps/unix/syscall-template.S: No such file or directory.
  (gdb) bt
  #0  0x00007f5c42639607 in ioctl () at ../sysdeps/unix/syscall-template.S:81
  #1  0x00007f5c4627b5e9 in kvm_vcpu_ioctl (address@hidden, address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1790
  #2  0x00007f5c4627b725 in kvm_cpu_exec (address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1675
  #3  0x00007f5c4622095c in qemu_kvm_cpu_thread_fn (arg=0x7f5c48b8ccd0)
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:873
  #4  0x00007f5c42906fda in start_thread (arg=0x7f5c197fa700) at 
pthread_create.c:308
  #5  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 3
  [Switching to thread 3 (Thread 0x7f5c3277d700 (LWP 16775))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: No 
such file or directory.
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f5c3277d700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 4
  [Switching to thread 4 (Thread 0x7f5c3c97f700 (LWP 16773))]
  #0  0x00007f5c426421b3 in epoll_wait () at 
../sysdeps/unix/syscall-template.S:81
  81    ../sysdeps/unix/syscall-template.S: No such file or directory.
  (gdb) bt
  #0  0x00007f5c426421b3 in epoll_wait () at 
../sysdeps/unix/syscall-template.S:81
  #1  0x00007f5c454ea917 in ?? () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c45712584 in ?? () from /usr/lib64/libgfapi.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f5c3c97f700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 5
  [Switching to thread 5 (Thread 0x7f5c3bb57700 (LWP 16774))]
  #0  0x00007f5c4290e43d in nanosleep () at 
../sysdeps/unix/syscall-template.S:81
  81    ../sysdeps/unix/syscall-template.S: No such file or directory.
  (gdb) bt
  #0  0x00007f5c4290e43d in nanosleep () at 
../sysdeps/unix/syscall-template.S:81
  #1  0x00007f5c454b4874 in gf_timer_proc () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c42906fda in start_thread (arg=0x7f5c3bb57700) at 
pthread_create.c:308
  #3  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 6
  [Switching to thread 6 (Thread 0x7f57b37fe700 (LWP 18169))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: No 
such file or directory.
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f57b37fe700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 7
  [Switching to thread 7 (Thread 0x7f5c3e418700 (LWP 16771))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f5c3e418700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 8
  [Switching to thread 8 (Thread 0x7f5bfecfd700 (LWP 17854))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f5bfecfd700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 9
  [Switching to thread 9 (Thread 0x7f5c2bfff700 (LWP 16778))]
  #0  0x00007f5c4290e43d in nanosleep () at 
../sysdeps/unix/syscall-template.S:81
  81    ../sysdeps/unix/syscall-template.S: No such file or directory.
  (gdb) bt
  #0  0x00007f5c4290e43d in nanosleep () at 
../sysdeps/unix/syscall-template.S:81
  #1  0x00007f5c454b4874 in gf_timer_proc () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c42906fda in start_thread (arg=0x7f5c2bfff700) at 
pthread_create.c:308
  #3  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 10
  [Switching to thread 10 (Thread 0x7f57caffd700 (LWP 20235))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: No 
such file or directory.
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f57caffd700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 11
  [Switching to thread 11 (Thread 0x7f5c19ffb700 (LWP 16785))]
  #0  0x00007f5c42639607 in ioctl () at ../sysdeps/unix/syscall-template.S:81
  81    ../sysdeps/unix/syscall-template.S: No such file or directory.
  (gdb) bt
  #0  0x00007f5c42639607 in ioctl () at ../sysdeps/unix/syscall-template.S:81
  #1  0x00007f5c4627b5e9 in kvm_vcpu_ioctl (address@hidden, address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1790
  #2  0x00007f5c4627b725 in kvm_cpu_exec (address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1675
  #3  0x00007f5c4622095c in qemu_kvm_cpu_thread_fn (arg=0x7f5c48b7c720)
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:873
  #4  0x00007f5c42906fda in start_thread (arg=0x7f5c19ffb700) at 
pthread_create.c:308
  #5  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 12
  [Switching to thread 12 (Thread 0x7f5c18bff700 (LWP 16788))]
  #0  0x00007f5c42637ded in poll () at ../sysdeps/unix/syscall-template.S:81
  81    ../sysdeps/unix/syscall-template.S: No such file or directory.
  (gdb) bt
  #0  0x00007f5c42637ded in poll () at ../sysdeps/unix/syscall-template.S:81
  #1  0x00007f5c43521494 in ?? () from /usr/lib64/libspice-server.so.1
  #2  0x00007f5c42906fda in start_thread (arg=0x7f5c18bff700) at 
pthread_create.c:308
  #3  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 13
  [Switching to thread 13 (Thread 0x7f5bfd6fb700 (LWP 19907))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: No 
such file or directory.
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f5bfd6fb700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 14
  [Switching to thread 14 (Thread 0x7f5c3dc17700 (LWP 16772))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f5c3dc17700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 15
  [Switching to thread 15 (Thread 0x7f5c30ee7700 (LWP 16777))]
  #0  0x00007f5c426421b3 in epoll_wait () at 
../sysdeps/unix/syscall-template.S:81
  81    ../sysdeps/unix/syscall-template.S: No such file or directory.
  (gdb) bt
  #0  0x00007f5c426421b3 in epoll_wait () at 
../sysdeps/unix/syscall-template.S:81
  #1  0x00007f5c454ea917 in ?? () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c45712584 in ?? () from /usr/lib64/libgfapi.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f5c30ee7700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 16
  [Switching to thread 16 (Thread 0x7f5bfcefa700 (LWP 19924))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: No 
such file or directory.
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f5bfcefa700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 17
  [Switching to thread 17 (Thread 0x7f57c8ff9700 (LWP 31327))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f57c8ff9700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 18
  [Switching to thread 18 (Thread 0x7f57cbfff700 (LWP 19985))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f57cbfff700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 19
  [Switching to thread 19 (Thread 0x7f57ca7fc700 (LWP 24029))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f57ca7fc700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 20
  [Switching to thread 20 (Thread 0x7f5c1b7fe700 (LWP 16782))]
  #0  __lll_lock_wait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
  135   ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: No such file or 
directory.
  (gdb) bt
  #0  __lll_lock_wait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
  #1  0x00007f5c4290923c in _L_lock_1001 () from /lib64/libpthread.so.0
  #2  0x00007f5c4290908b in __GI___pthread_mutex_lock (mutex=0x7f5c46b87dc0 
<qemu_global_mutex>) at pthread_mutex_lock.c:64
  #3  0x00007f5c4631c6c9 in qemu_mutex_lock (address@hidden <qemu_global_mutex>)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/util/qemu-thread-posix.c:76
  #4  0x00007f5c46221c50 in qemu_mutex_lock_iothread ()
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:1043
  #5  0x00007f5c4627b72d in kvm_cpu_exec (address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1677
  #6  0x00007f5c4622095c in qemu_kvm_cpu_thread_fn (arg=0x7f5c48b4b610)
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:873
  #7  0x00007f5c42906fda in start_thread (arg=0x7f5c1b7fe700) at 
pthread_create.c:308
  #8  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 21
  [Switching to thread 21 (Thread 0x7f5c31f7c700 (LWP 16776))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: No 
such file or directory.
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f5c31f7c700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 22
  [Switching to thread 22 (Thread 0x7f57c9ffb700 (LWP 25116))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f57c9ffb700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 23
  [Switching to thread 23 (Thread 0x7f57b3fff700 (LWP 5016))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f57b3fff700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 24
  [Switching to thread 24 (Thread 0x7f57c97fa700 (LWP 31326))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f57c97fa700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 25
  [Switching to thread 25 (Thread 0x7f57b2ffd700 (LWP 18170))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f57b2ffd700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 26
  [Switching to thread 26 (Thread 0x7f5c295e2700 (LWP 16779))]
  #0  __lll_lock_wait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
  135   ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: No such file or 
directory.
  (gdb) bt
  #0  __lll_lock_wait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
  #1  0x00007f5c4290923c in _L_lock_1001 () from /lib64/libpthread.so.0
  #2  0x00007f5c4290908b in __GI___pthread_mutex_lock (mutex=0x7f5c46b87dc0 
<qemu_global_mutex>) at pthread_mutex_lock.c:64
  #3  0x00007f5c4631c6c9 in qemu_mutex_lock (address@hidden <qemu_global_mutex>)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/util/qemu-thread-posix.c:76
  #4  0x00007f5c46221c50 in qemu_mutex_lock_iothread ()
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:1043
  #5  0x00007f5c4627b72d in kvm_cpu_exec (address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1677
  #6  0x00007f5c4622095c in qemu_kvm_cpu_thread_fn (arg=0x7f5c48aefab0)
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:873
  #7  0x00007f5c42906fda in start_thread (arg=0x7f5c295e2700) at 
pthread_create.c:308
  #8  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 27
  [Switching to thread 27 (Thread 0x7f5c1a7fc700 (LWP 16784))]
  #0  __lll_lock_wait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
  135   in ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
  (gdb) bt
  #0  __lll_lock_wait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
  #1  0x00007f5c4290923c in _L_lock_1001 () from /lib64/libpthread.so.0
  #2  0x00007f5c4290908b in __GI___pthread_mutex_lock (mutex=0x7f5c46b87dc0 
<qemu_global_mutex>) at pthread_mutex_lock.c:64
  #3  0x00007f5c4631c6c9 in qemu_mutex_lock (address@hidden <qemu_global_mutex>)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/util/qemu-thread-posix.c:76
  #4  0x00007f5c46221c50 in qemu_mutex_lock_iothread ()
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:1043
  #5  0x00007f5c4627b72d in kvm_cpu_exec (address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1677
  #6  0x00007f5c4622095c in qemu_kvm_cpu_thread_fn (arg=0x7f5c48b6c170)
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:873
  #7  0x00007f5c42906fda in start_thread (arg=0x7f5c1a7fc700) at 
pthread_create.c:308
  #8  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 28
  [Switching to thread 28 (Thread 0x7f5c28de1700 (LWP 16780))]
  #0  0x00007f5c42639607 in ioctl () at ../sysdeps/unix/syscall-template.S:81
  81    ../sysdeps/unix/syscall-template.S: No such file or directory.
  (gdb) bt
  #0  0x00007f5c42639607 in ioctl () at ../sysdeps/unix/syscall-template.S:81
  #1  0x00007f5c4627b5e9 in kvm_vcpu_ioctl (address@hidden, address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1790
  #2  0x00007f5c4627b725 in kvm_cpu_exec (address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1675
  #3  0x00007f5c4622095c in qemu_kvm_cpu_thread_fn (arg=0x7f5c48b2aab0)
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:873
  #4  0x00007f5c42906fda in start_thread (arg=0x7f5c28de1700) at 
pthread_create.c:308
  #5  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 29
  [Switching to thread 29 (Thread 0x7f5c1bfff700 (LWP 16781))]
  #0  0x00007f5c42639607 in ioctl () at ../sysdeps/unix/syscall-template.S:81
  81    in ../sysdeps/unix/syscall-template.S
  (gdb) bt
  #0  0x00007f5c42639607 in ioctl () at ../sysdeps/unix/syscall-template.S:81
  #1  0x00007f5c4627b5e9 in kvm_vcpu_ioctl (address@hidden, address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1790
  #2  0x00007f5c4627b725 in kvm_cpu_exec (address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1675
  #3  0x00007f5c4622095c in qemu_kvm_cpu_thread_fn (arg=0x7f5c48b3b060)
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:873
  #4  0x00007f5c42906fda in start_thread (arg=0x7f5c1bfff700) at 
pthread_create.c:308
  #5  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 30
  [Switching to thread 30 (Thread 0x7f5c45f87880 (LWP 16769))]
  #0  0x00007f5c42637ff6 in __GI_ppoll (fds=0x7f5c48bcd750, nfds=74, 
timeout=0x7fff92d94e60, address@hidden, 
      address@hidden) at ../sysdeps/unix/sysv/linux/ppoll.c:57
  57    ../sysdeps/unix/sysv/linux/ppoll.c: No such file or directory.
  (gdb) bt
  #0  0x00007f5c42637ff6 in __GI_ppoll (fds=0x7f5c48bcd750, nfds=74, 
timeout=0x7fff92d94e60, address@hidden, 
      address@hidden) at ../sysdeps/unix/sysv/linux/ppoll.c:57
  #1  0x00007f5c461d5c39 in ppoll (__ss=0x0, __timeout=0x7fff92d94f20, 
__nfds=<optimized out>, __fds=<optimized out>)
      at /usr/include/bits/poll2.h:77
  #2  qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>, address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/qemu-timer.c:316
  #3  0x00007f5c46199154 in os_host_main_loop_wait (timeout=313102)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/main-loop.c:229
  #4  main_loop_wait (nonblocking=<optimized out>) at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/main-loop.c:484
  #5  0x00007f5c460457ae in main_loop () at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/vl.c:2051
  #6  main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>)
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/vl.c:4507
  (gdb) thread 31
  [Switching to thread 31 (Thread 0x7f5bfe2fc700 (LWP 19906))]
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  238   ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: No 
such file or directory.
  (gdb) bt
  #0  pthread_cond_timedwait () at 
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007f5c454d34e3 in syncenv_task () from /usr/lib64/libglusterfs.so.0
  #2  0x00007f5c454d3920 in syncenv_processor () from 
/usr/lib64/libglusterfs.so.0
  #3  0x00007f5c42906fda in start_thread (arg=0x7f5bfe2fc700) at 
pthread_create.c:308
  #4  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
  (gdb) thread 32
  [Switching to thread 32 (Thread 0x7f5c1affd700 (LWP 16783))]
  #0  0x00007f5c42639607 in ioctl () at ../sysdeps/unix/syscall-template.S:81
  81    ../sysdeps/unix/syscall-template.S: No such file or directory.
  (gdb) bt
  #0  0x00007f5c42639607 in ioctl () at ../sysdeps/unix/syscall-template.S:81
  #1  0x00007f5c4627b5e9 in kvm_vcpu_ioctl (address@hidden, address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1790
  #2  0x00007f5c4627b725 in kvm_cpu_exec (address@hidden)
      at 
/var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/kvm-all.c:1675
  #3  0x00007f5c4622095c in qemu_kvm_cpu_thread_fn (arg=0x7f5c48b5bbc0)
      at /var/tmp/portage/app-emulation/qemu-2.0.0/work/qemu-2.0.0/cpus.c:873
  #4  0x00007f5c42906fda in start_thread (arg=0x7f5c1affd700) at 
pthread_create.c:308
  #5  0x00007f5c42641b1d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

  XML definition from libvirt:

  <domain type='kvm' id='9'>
    <name>b1032388-abb8-4176-897b-0c30a1a73714</name>
    <uuid>b1032388-abb8-4176-897b-0c30a1a73714</uuid>
    <memory unit='KiB'>16777216</memory>
    <currentMemory unit='KiB'>16777216</currentMemory>
    <vcpu placement='static'>8</vcpu>
    <resource>
      <partition>/machine</partition>
    </resource>
    <os>
      <type arch='x86_64' machine='pc-i440fx-1.5'>hvm</type>
      <boot dev='hd'/>
    </os>
    <features>
      <acpi/>
      <pae/>
      <hap/>
    </features>
    <cpu mode='host-model'>
      <model fallback='allow'/>
    </cpu>
    <clock offset='localtime'/>
    <on_poweroff>destroy</on_poweroff>
    <on_reboot>restart</on_reboot>
    <on_crash>destroy</on_crash>
    <devices>
      <emulator>/usr/bin/qemu-kvm</emulator>
      <disk type='file' device='cdrom'>
        <driver name='qemu' type='raw'/>
        <source 
file='/var/virtualization/iso/571196f0-4b29-48c9-b250-50697cbe4317.iso'/>
        <backingStore/>
        <target dev='hdb' bus='ide'/>
        <readonly/>
        <alias name='ide0-0-1'/>
        <address type='drive' controller='0' bus='0' target='0' unit='1'/>
      </disk>
      <disk type='file' device='cdrom'>
        <driver name='qemu' type='raw'/>
        <source 
file='/var/virtualization/iso/85d7e9f5-4288-4a3f-b209-c12ff11c61f3.iso'/>
        <backingStore/>
        <target dev='hdc' bus='ide'/>
        <readonly/>
        <alias name='ide0-1-0'/>
        <address type='drive' controller='0' bus='1' target='0' unit='0'/>
      </disk>
      <disk type='network' device='disk'>
        <driver name='qemu' type='qcow2' cache='none'/>
        <source protocol='gluster' 
name='virtualization/vm-persistent/0f83f084-8080-413e-b558-b678e504836e/d35a6600-91bf-4fd1-aba4-1fe6a813d481.qcow2'>
          <host name='1.2.3.4'/>
        </source>
        <backingStore/>
        <target dev='vda' bus='virtio'/>
        <alias name='virtio-disk0'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x06' 
function='0x0'/>
      </disk>
      <disk type='network' device='disk'>
        <driver name='qemu' type='qcow2' cache='none'/>
        <source protocol='gluster' 
name='virtualization/vm-persistent/0f83f084-8080-413e-b558-b678e504836e/V5qtOlCs-8PgV-64tQ-a79N-j4ko4GIBijT4.qcow2'>
          <host name='1.2.3.4'/>
        </source>
        <backingStore/>
        <target dev='vdb' bus='virtio'/>
        <alias name='virtio-disk1'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x07' 
function='0x0'/>
      </disk>
      <controller type='usb' index='0' model='ich9-ehci1'>
        <alias name='usb0'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x08' 
function='0x7'/>
      </controller>
      <controller type='usb' index='0' model='ich9-uhci1'>
        <alias name='usb0'/>
        <master startport='0'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x08' 
function='0x0' multifunction='on'/>
      </controller>
      <controller type='usb' index='0' model='ich9-uhci2'>
        <alias name='usb0'/>
        <master startport='2'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x08' 
function='0x1'/>
      </controller>
      <controller type='usb' index='0' model='ich9-uhci3'>
        <alias name='usb0'/>
        <master startport='4'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x08' 
function='0x2'/>
      </controller>
      <controller type='pci' index='0' model='pci-root'>
        <alias name='pci.0'/>
      </controller>
      <controller type='ide' index='0'>
        <alias name='ide0'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x01' 
function='0x1'/>
      </controller>
      <controller type='virtio-serial' index='0'>
        <alias name='virtio-serial0'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x05' 
function='0x0'/>
      </controller>
      <interface type='bridge'>
        <mac address='XX.XX.XX.XX:XX:XX'/>
        <source bridge='vmbr0'/>
        <target dev='kvm-XYZ_0'/>
        <model type='virtio'/>
        <alias name='net0'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x03' 
function='0x0'/>
      </interface>
      <channel type='spicevmc'>
        <target type='virtio' name='com.redhat.spice.0'/>
        <alias name='channel0'/>
        <address type='virtio-serial' controller='0' bus='0' port='1'/>
      </channel>
      <channel type='unix'>
        <source mode='bind' 
path='/var/lib/libvirt/qemu/channel/target/b1032388-abb8-4176-897b-0c30a1a73714.org.qemu.guest_agent.0'/>
        <target type='virtio' name='org.qemu.guest_agent.0'/>
        <alias name='channel1'/>
        <address type='virtio-serial' controller='0' bus='0' port='2'/>
      </channel>
      <input type='tablet' bus='usb'>
        <alias name='input0'/>
      </input>
      <input type='mouse' bus='ps2'/>
      <input type='keyboard' bus='ps2'/>
      <graphics type='spice' port='5900' autoport='no' listen='1.2.3.4'>
        <listen type='address' address='1.2.3.4'/>
      </graphics>
      <sound model='ac97'>
        <alias name='sound0'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x04' 
function='0x0'/>
      </sound>
      <video>
        <model type='qxl' ram='65536' vram='65536' heads='1'/>
        <alias name='video0'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x02' 
function='0x0'/>
      </video>
      <redirdev bus='usb' type='spicevmc'>
        <alias name='redir0'/>
      </redirdev>
      <redirdev bus='usb' type='spicevmc'>
        <alias name='redir1'/>
      </redirdev>
      <redirdev bus='usb' type='spicevmc'>
        <alias name='redir2'/>
      </redirdev>
      <redirfilter>
        <usbdev allow='no'/>
      </redirfilter>
      <memballoon model='virtio'>
        <alias name='balloon0'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x09' 
function='0x0'/>
      </memballoon>
      <rng model='virtio'>
        <rate bytes='1024' period='1000'/>
        <backend model='random'>/dev/random</backend>
        <alias name='rng0'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' 
function='0x0'/>
      </rng>
    </devices>
    <seclabel type='none'/>
  </domain>

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