libvirt users - Aug 2012 - libvirtd crashes after guest migration with attached console

Hi,

please see following backtrace. How to reproduce: start qemu guest
w/attached console, execute migration, get a crash at the end.

Program received signal SIGSEGV, Segmentation fault.
virHashRemoveEntry (table=0x7fa0e0003e90, name=0x7fa0ec00ca60) at
/var/tmp/build/libvirt/libvirt-0.9.13/./src/util/virhash.c:463

bt
#0  virHashRemoveEntry (table=0x7fa0e0003e90, name=0x7fa0ec00ca60) at
/var/tmp/build/libvirt/libvirt-0.9.13/./src/util/virhash.c:463
#1  0x00007fa0ffa5efcc in virConsoleFDStreamCloseCb (st=<optimized
out>, opaque=0x7fa0ec00cad0)
    at /var/tmp/build/libvirt/libvirt-0.9.13/./src/conf/virconsole.c:259
#2  0x00007fa0ffa7a303 in virFDStreamCloseInt (st=0x7fa0ec00c900,
streamAbort=<optimized out>)
    at /var/tmp/build/libvirt/libvirt-0.9.13/./src/fdstream.c:325
#3  0x00007fa0ffaa0503 in virStreamAbort (stream=0x7fa0ec00c900) at
/var/tmp/build/libvirt/libvirt-0.9.13/./src/libvirt.c:15289
#4  0x00000000004290c0 in daemonStreamEvent (st=<optimized out>,
events=12, opaque=0x18869f0)
    at /var/tmp/build/libvirt/libvirt-0.9.13/./daemon/stream.c:234
#5  0x00007fa0ffa7a4ac in virFDStreamEvent (watch=<optimized out>,
fd=<optimized out>, events=13, opaque=0x7fa0ec00c900)
    at /var/tmp/build/libvirt/libvirt-0.9.13/./src/fdstream.c:171
#6  0x00007fa0ff9fb07f in virEventPollDispatchHandles (fds=<optimized
out>, nfds=11)
    at /var/tmp/build/libvirt/libvirt-0.9.13/./src/util/event_poll.c:489
#7  virEventPollRunOnce () at
/var/tmp/build/libvirt/libvirt-0.9.13/./src/util/event_poll.c:636
#8  0x00007fa0ff9f99b7 in virEventRunDefaultImpl () at
/var/tmp/build/libvirt/libvirt-0.9.13/./src/util/event.c:247
#9  0x00007fa0ffad930d in virNetServerRun (srv=0x186f0b0) at
/var/tmp/build/libvirt/libvirt-0.9.13/./src/rpc/virnetserver.c:712
#10 0x000000000040c9fc in main (argc=<optimized out>, argv=<optimized
out>)
    at /var/tmp/build/libvirt/libvirt-0.9.13/./daemon/libvirtd.c:1299

On 08/13/12 09:42, Andrey Korolyov wrote:
> Hi,
Hi Andrey,
>
> please see following backtrace. How to reproduce: start qemu guest
> w/attached console, execute migration, get a crash at the end.
>
> Program received signal SIGSEGV, Segmentation fault.
> virHashRemoveEntry (table=0x7fa0e0003e90, name=0x7fa0ec00ca60) at
> /var/tmp/build/libvirt/libvirt-0.9.13/./src/util/virhash.c:463
This looks similar to a bug that I've fixed (and also caused :) ). I'd 
say it should be fixed in the current version, but I'll definitely try 
to reproduce it in your scenario just to be sure.

Thanks for the report.

Peter