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Created attachment 1819971[details]
Full threads backtrace
Description of problem:
As subject
Version-Release number of selected component (if applicable):
libvirt-7.6.0-2.el9.x86_64
How reproducible:
100%
Steps to Reproduce:
# systemctl start libvirtd; systemctl restart virtqemud; virsh list; systemctl restart virtproxyd; virsh list
Id Name State
--------------------
error: failed to connect to the hypervisor
error: no connection driver available for <null>
Actual results:
➜ ~ coredumpctl -1
TIME PID UID GID SIG COREFILE EXE SIZE
Thu 2021-09-02 05:46:56 EDT 38453 0 0 SIGSEGV present /usr/sbin/virtqemud 818.5K
Core was generated by `/usr/sbin/virtqemud --timeout 120'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 ___pthread_mutex_lock (mutex=mutex@entry=0x40) at pthread_mutex_lock.c:76
76 unsigned int type = PTHREAD_MUTEX_TYPE_ELISION (mutex);
[Current thread is 1 (Thread 0x7f42536f8ac0 (LWP 38453))]
(gdb) bt
#0 ___pthread_mutex_lock (mutex=mutex@entry=0x40) at pthread_mutex_lock.c:76
#1 0x00007f4255170659 in virMutexLock (m=m@entry=0x40) at ../src/util/virthread.c:91
#2 0x00007f4255170ef9 in virThreadPoolStop (pool=0x0) at ../src/util/virthreadpool.c:491
#3 0x00007f424e2ed5fd in qemuStateShutdownPrepare () at ../src/qemu/qemu_driver.c:1063
#4 0x00007f425530c490 in virStateShutdownPrepare () at ../src/libvirt.c:691
#5 0x00007f425523615d in virNetDaemonRun (dmn=0x5648808d9020) at ../src/rpc/virnetdaemon.c:863
#6 0x000056487fc7923d in main (argc=<optimized out>, argv=<optimized out>) at ../src/remote/remote_daemon.c:1213
Expected results:
No segment fault
Additional info:
It works well on libvirt-6.0.0-35.module+el8.4.0+10230+7a9b21e4.x86_64
Comment 1Jaroslav Suchanek
2021-09-06 15:10:15 UTC
This seemed to be a modular daemon issue:
* libvirt-7.6.0-2.el9 (8eaad4cc89): segfault
* libvirt-7.7.0-1.el9 (12c67b3b70): segfault
* libvirt-7.7.0-2.el9 (fe2cbd9a2d): works
* libvirt-7.7.0-3.el9 (fdbfa94e98): works
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (new packages: libvirt), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2022:2390
Created attachment 1819971 [details] Full threads backtrace Description of problem: As subject Version-Release number of selected component (if applicable): libvirt-7.6.0-2.el9.x86_64 How reproducible: 100% Steps to Reproduce: # systemctl start libvirtd; systemctl restart virtqemud; virsh list; systemctl restart virtproxyd; virsh list Id Name State -------------------- error: failed to connect to the hypervisor error: no connection driver available for <null> Actual results: ➜ ~ coredumpctl -1 TIME PID UID GID SIG COREFILE EXE SIZE Thu 2021-09-02 05:46:56 EDT 38453 0 0 SIGSEGV present /usr/sbin/virtqemud 818.5K Core was generated by `/usr/sbin/virtqemud --timeout 120'. Program terminated with signal SIGSEGV, Segmentation fault. #0 ___pthread_mutex_lock (mutex=mutex@entry=0x40) at pthread_mutex_lock.c:76 76 unsigned int type = PTHREAD_MUTEX_TYPE_ELISION (mutex); [Current thread is 1 (Thread 0x7f42536f8ac0 (LWP 38453))] (gdb) bt #0 ___pthread_mutex_lock (mutex=mutex@entry=0x40) at pthread_mutex_lock.c:76 #1 0x00007f4255170659 in virMutexLock (m=m@entry=0x40) at ../src/util/virthread.c:91 #2 0x00007f4255170ef9 in virThreadPoolStop (pool=0x0) at ../src/util/virthreadpool.c:491 #3 0x00007f424e2ed5fd in qemuStateShutdownPrepare () at ../src/qemu/qemu_driver.c:1063 #4 0x00007f425530c490 in virStateShutdownPrepare () at ../src/libvirt.c:691 #5 0x00007f425523615d in virNetDaemonRun (dmn=0x5648808d9020) at ../src/rpc/virnetdaemon.c:863 #6 0x000056487fc7923d in main (argc=<optimized out>, argv=<optimized out>) at ../src/remote/remote_daemon.c:1213 Expected results: No segment fault Additional info: It works well on libvirt-6.0.0-35.module+el8.4.0+10230+7a9b21e4.x86_64