[Pkg-libvirt-maintainers] Bug#605964: Bug#605964: libvirt-bin: sometimes(randomly) crashes when connecting using python-libvirt

[Guido Günther]

tag 605964 +unreproducible
thanks,

On Sun, Dec 05, 2010 at 04:09:04PM +1100, david b wrote:
> Package: libvirt-bin
> Version: 0.8.3-5
> Severity: normal
> 
> I cannot reliably reproduce this, but here is the python I was using to crash libvirt-bin (sometimes):
> 
> import libvirt
> import sys
> 
> 
> def main():
> 	#conn = libvirt.openReadOnly(None)
> 	conn = libvirt.openReadOnly("qemu:///system")
> 	print conn.isSecure()
> 	print conn.listDefinedDomains()
> 
> 
> if __name__ == "__main__":
> 	main()
> 
> I was switching between a conn None and the conn connected to qemu:///system. The conn (established with None in the call) seems to be talking to virtualbox.
> 
> When it crashes I see something like this:
> [46609.226658] libvirtd[2139]: segfault at 7fa018db5bdf ip 0000000000419293 sp 00007fa013d8a270 error 7 in libvirtd[400000+dc000]
> or this
> [49173.212641] libvirtd[15647]: segfault at 7f9ac72acbdf ip 00007f9acb7bcb73 sp 00007f9ac2a82270 error 7 in libvirtd[7f9acb79c000+e5000]
> in dmesg output. 
Again not reproducible here. Since (from the other report) you seem to
use gdb just grab the debug package and produce a backtrace. Valgrind
might help here too. Also please check with libvirt from experimental.
Cheers,
 -- Guido

> 
> In /var/log/messages, the following is present(before the crash - I cannot be sure on the exact ordering of events):
> 
> Dec  5 15:43:46 randombox libvirtd: 15:43:46.381: warning : lxcStartup:1900 : Unable to create cgroup for driver: No such device or address
> Dec  5 15:43:47 randombox libvirtd: 15:43:47.944: warning : qemudDispatchSignalEvent:396 : Shutting down on signal 15
> Dec  5 15:43:49 randombox libvirtd: 15:43:49.212: warning : qemudStartup:1832 : Unable to create cgroup for driver: No such device or address
> Dec  5 15:43:49 randombox libvirtd: 15:43:49.645: warning : qemudParsePCIDeviceStrs:1422 : Unexpected exit status '1', qemu probably failed
> Dec  5 15:43:49 randombox libvirtd: 15:43:49.921: warning : qemudParsePCIDeviceStrs:1422 : Unexpected exit status '1', qemu probably failed
> 
> 
> -- System Information:
> Debian Release: 5.0.7
>   APT prefers stable
>   APT policy: (900, 'stable'), (650, 'testing')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 2.6.36.1 (SMP w/4 CPU cores)
> Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/bash
> 
> 
> 
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