search for: virhash

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 virConsoleFDStr...

❦ 4 avril 2018 11:17 +0200, Michal Privoznik <mprivozn@redhat.com> : > Dunno, this is the first time I hear about this issue. Maybe you can try > to set a break point on virHashIterationError() and when it's hit get > stacktrace of all threads 't a a bt'. That might shed more light into > the issue. Smells like we are not locking somewhere properly. So, we have two threads iterating. Both of them originates from virNetServerProgramDispatchCall. So, it se...

On 04/04/2018 02:59 PM, Vincent Bernat wrote: > ❦ 4 avril 2018 11:17 +0200, Michal Privoznik <mprivozn@redhat.com> : > >> Dunno, this is the first time I hear about this issue. Maybe you can try >> to set a break point on virHashIterationError() and when it's hit get >> stacktrace of all threads 't a a bt'. That might shed more light into >> the issue. Smells like we are not locking somewhere properly. > > So, we have two threads iterating. Both of them originates from > virNetServerProgram...

Hey! On many of our servers, we often have the following error: error : virHashForEach:597 : Hash operation not allowed during iteration When querying the list of domains, this means libvirt will silently return 0 domain (most uses of virHashForEach don't handle the return code). We are using a hook, but the hook doesn't query libvirt back, so it should be safe from...

...(m=0x7f79140099d0) at util/virthread.c:89 #4 0x00007f793b07d831 in virObjectLock (anyobj=0x7f79140099c0) at util/virobject.c:323 #5 0x00007f793b0b717f in virDomainObjListSearchID (payload=0x7f79140099c0, name=0x7f791400f7c0, data=0x7f792a92b464) at conf/domain_conf.c:1225 #6 0x00007f793b055f1e in virHashSearch (ctable=0x7f78d81ccc40, iter=0x7f793b0b7148 <virDomainObjListSearchID>, data=0x7f792a92b464) at util/virhash.c:724 #7 0x00007f793b0b71f2 in virDomainObjListFindByID (doms=0x7f78d80edd20, id=2) at conf/domain_conf.c:1238 #8 0x00007f78fe3f7eb3 in libxlDomainEventHandler (data=0x7f78d81c...