On Thu, Dec 19, 2013 at 03:09:14PM +0530, cool dharma06 wrote:
I am newbie to this gdb debugging. now i did the bt in the debugging. In my side still it showing the error. Following are the stacktrace which i got. Kindly refer the following logs for full information:
**** [New Thread 0x7f8503695700 (LWP 20012)]
Program received signal SIGSEGV, Segmentation fault. 0x0000000000000000 in ?? () (gdb) bt #0 0x0000000000000000 in ?? () #1 0x00007f84f671281e in libxl_osevent_occurred_timeout (ctx=<optimized out>, for_libxl=0x7f8503bbbc38) at libxl_event.c:1039 #2 0x00007f84f69439c7 in libxlDomainObjTimerCallback (timer=<optimized out>, timer_info=0x7f8503bb5930) at libxl/libxl_domain.c:216 #3 0x00007f8502ba6f7d in virEventPollDispatchTimeouts () at util/vireventpoll.c:451 #4 virEventPollRunOnce () at util/vireventpoll.c:644 #5 0x00007f8502ba570b in virEventRunDefaultImpl () at util/virevent.c:274 #6 0x00007f8502cda065 in virNetServerRun (srv=0x7f8503ba6ba0) at rpc/virnetserver.c:1112 #7 0x00007f85036c251c in main (argc=<optimized out>, argv=<optimized out>) at libvirtd.c:1513 (gdb)
In this case, that stack trace looks like it ought to be sufficient to identify the problem - a clear NULL pointer reference. In general though you want to capture a stack trace of all threads in a program eg instead of 'bt', do 'thread apply all bt' next time. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|