[Bug 1702621] Re: colo: secondary vm crash during loadvm

[Launchpad Bug Tracker]

[Expired for QEMU because there has been no activity for 60 days.]

** Changed in: qemu
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1702621

Title:
  colo: secondary vm crash during loadvm

Status in QEMU:
  Expired

Bug description:
  Following document 'COLO-FT.txt', I test colo feature on my hosts. It seems 
goes well. But after a while the secondary vm crash.  The stack is as follows:
  #0  0x00007f191456dc37 in raise () from /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007f1914571028 in abort () from /lib/x86_64-linux-gnu/libc.so.6
  #2  0x00007f1914566bf6 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
  #3  0x00007f1914566ca2 in __assert_fail () from 
/lib/x86_64-linux-gnu/libc.so.6
  #4  0x0000564154ad9147 in pcibus_reset (qbus=0x564156760d10) at 
../hw/pci/pci.c:311
  #5  0x0000564154a07cdb in qbus_reset_one (bus=0x564156760d10, opaque=0x0) at 
hw/core/qdev.c:319
  #6  0x0000564154a0d721 in qbus_walk_children (bus=0x564156760d10, 
pre_devfn=0, pre_busfn=0, 
      post_devfn=0x564154a07c26 <qdev_reset_one>, post_busfn=0x564154a07c6c 
<qbus_reset_one>, opaque=0x0)
      at hw/core/bus.c:68
  #7  0x0000564154a08b4d in qdev_walk_children (dev=0x56415675f2b0, 
pre_devfn=0, pre_busfn=0, 
      post_devfn=0x564154a07c26 <qdev_reset_one>, post_busfn=0x564154a07c6c 
<qbus_reset_one>, opaque=0x0)
      at hw/core/qdev.c:617
  #8  0x0000564154a0d6e5 in qbus_walk_children (bus=0x564156594d30, 
pre_devfn=0, pre_busfn=0, 
      post_devfn=0x564154a07c26 <qdev_reset_one>, post_busfn=0x564154a07c6c 
<qbus_reset_one>, opaque=0x0)
      at hw/core/bus.c:59
  #9  0x0000564154a07df5 in qbus_reset_all (bus=0x564156594d30) at 
hw/core/qdev.c:336
  #10 0x0000564154a07e3a in qbus_reset_all_fn (opaque=0x564156594d30) at 
hw/core/qdev.c:342
  #11 0x0000564154a0e222 in qemu_devices_reset () at hw/core/reset.c:69
  #12 0x00005641548b3b47 in pc_machine_reset () at 
/vms/git/qemu/hw/i386/pc.c:2234
  #13 0x0000564154972ca7 in qemu_system_reset (report=false) at vl.c:1697
  #14 0x0000564154b9d007 in colo_process_incoming_thread 
(opaque=0x5641553c1280) at migration/colo.c:617
  #15 0x00007f1914907184 in start_thread () from 
/lib/x86_64-linux-gnu/libpthread.so.0
  #16 0x00007f1914634bed in clone () from /lib/x86_64-linux-gnu/libc.so.6

  (gdb) frame 4
  #4  0x0000564154ad9147 in pcibus_reset (qbus=0x564156760d10) at 
../hw/pci/pci.c:311
  warning: Source file is more recent than executable.
  311             assert(bus->irq_count[i] == 0);
  (gdb) ^CQuit
  (gdb) p bus->irq_count[i]
  $1 = -1

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