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Re: [libvirt] libvirt-0.8.5 sometimes crahing

On 11/23/2010 11:49 AM, Nikola Ciprich wrote:
> Hello,
> I noticed that libvirtd sometimes crashes immediately after start..
> here's the backtrace:
> Core was generated by `libvirtd --daemon --listen'.
> Program terminated with signal 11, Segmentation fault.
> #0  0x00007fee038c0ca0 in pthread_mutex_lock () from /lib64/libpthread.so.0
> (gdb) bt
> #0  0x00007fee038c0ca0 in pthread_mutex_lock () from /lib64/libpthread.so.0
> #1  0x000000000042eb21 in qemuDomainObjEnterMonitor (obj=0xe417d0) at qemu/qemu_driver.c:478
> #2  0x0000000000448e7e in qemudDomainGetInfo (dom=<value optimized out>, info=0x43392e10) at qemu/qemu_driver.c:5165
> #3  0x00007fee054f29f2 in virDomainGetInfo (domain=0xe3f610, info=0x43392e10) at libvirt.c:3177
> #4  0x000000000042554e in remoteDispatchDomainGetInfo (server=<value optimized out>, client=<value optimized out>, conn=0xdd8a20, hdr=<value optimized out>, rerr=0x43392eb0, 
>     args=<value optimized out>, ret=0x43392f90) at remote.c:1503
> #5  0x0000000000427444 in remoteDispatchClientCall (server=0xdb84d0, client=0x7fedfc040bc0, msg=0x7fedfc0410a0) at dispatch.c:529
> #6  remoteDispatchClientRequest (server=0xdb84d0, client=0x7fedfc040bc0, msg=0x7fedfc0410a0) at dispatch.c:407
> #7  0x00000000004194c7 in qemudWorker (data=<value optimized out>) at libvirtd.c:1587
> #8  0x00007fee038be73d in start_thread () from /lib64/libpthread.so.0
> #9  0x00007fee03430f6d in clone () from /lib64/libc.so.6
> Could somebody please look at it?
> If I could provide any additional information, please let me know.
> Thanks in advance

Hmm; this looks similar to the crash that was supposed to be fixed by
commit 054d43f57 which made it into 0.8.5; maybe I missed a case where
we aren't grabbing locks in the correct order?

Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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