Re: [libvirt] 1.2.0 segfault on Centos 6

On 02/04/2014 09:02 AM, Franky Van Liedekerke wrote: > Hi, > > using libvirt 1.2.0 on a up-to-date Centos6.5 machine leads to > occasional segmentation faults (see below). > Sometimes it runs for 5 minutes, sometimes for an hour, but after > that the result is always the same: segfault after some weird > qom-list, that apparently the qemu version on centos doesn't know. > Has 1.2.1 a known fix for this? > > Franky (debug log of last crash is below the dotted line) > > ------------------------------------------------- > > 2014-02-04 15:50:27.351+0000: 9082: error : > qemuMonitorJSONCheckError:354 : internal error: unable to execute > QEMU command 'qom-list': The command qom-list has not been found > Caught Segmentation violation dumping internal log buffer: > Sounds to me like poor fallback - a patch in libvirt was tested against a newer version of qemu that provides qom-list, but doesn't gracefully handle older qemu where it doesn't work. Are you in a position to bisect which libvirt patch introduced the problem? It looks like our first use of qom-list was in 1.1.1, with commit d76a897.