On Tue, Jul 03, 2018 at 09:21 PM +0200, John Ferlan <jferlan@redhat.com> wrote:
Is there any update so far? I’m asking because I’m still getting segmentation faults and hang-ups on termination of libvirtd (using the newest version of libvirt).
Example for a hang-up: ➤ bt #0 0x000003fffca8df84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x000003fffdac29ca in virCondWait (c=<optimized out>, m=<optimized out>) at ../../src/util/virthread.c:154 #2 0x000003fffdac381c in virThreadPoolFree (pool=<optimized out>) at ../../src/util/virthreadpool.c:290 #3 0x000003fffdbb21ae in virNetServerDispose (obj=0x1000cc640) at ../../src/rpc/virnetserver.c:803 #4 0x000003fffda97286 in virObjectUnref (anyobj=<optimized out>) at ../../src/util/virobject.c:350 #5 0x000003fffda97a5a in virObjectFreeHashData (opaque=<optimized out>, name=<optimized out>) at ../../src/util/virobject.c:591 #6 0x000003fffda66576 in virHashFree (table=<optimized out>) at ../../src/util/virhash.c:305 #7 0x000003fffdbaff82 in virNetDaemonDispose (obj=0x1000cc3c0) at ../../src/rpc/virnetdaemon.c:105 #8 0x000003fffda97286 in virObjectUnref (anyobj=<optimized out>) at ../../src/util/virobject.c:350 #9 0x0000000100026cd6 in main (argc=<optimized out>, argv=<optimized out>) at ../../src/remote/remote_daemon.c:1487
And segmentation faults happen for RPC jobs that are still running.
There has been zero of my cycles spent thinking about this. Partially because I'm busy in other areas, partially because I know Daniel is planning changes in libvirtd (https://www.redhat.com/archives/libvir-list/2018-May/msg01307.html), and partially because I'm not sure I have a {reliable|simple} reproducer (at least I don't recall).
I do a simple start/destroy loop and send a SIGTERM to libvirtd. This leads in almost every case to a segmentation fault.
I do still have various branches in various states of disarray that are way behind current head (easy to happen it seems lately).
John
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