Re: [libvirt] libvirtd (from git) no longer responds to 'kill'

This seems to be some sort of deadlock, easily reproduced by running the libguestfs test suite, or even just 'libguestfs-test-tool'. Here is a stack trace: (gdb) t a a bt

Thread 8 (Thread 0x7fe64edd4700 (LWP 20024)): #0 __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135 ---Type <return> to continue, or q <return> to quit--- #1 0x000000328ca09ca6 in _L_lock_836 () from /lib64/libpthread.so.0 #2 0x000000328ca09ba8 in __GI___pthread_mutex_lock ( mutex=mutex@entry=0x7fe64006eb30) at pthread_mutex_lock.c:64 #3 0x00007fe650ad142d in virMutexLock (m=m@entry=0x7fe64006eb30) at util/virthreadpthread.c:85 #4 0x00007fe650ac38de in virObjectLock (anyobj=anyobj@entry=0x7fe64006eb20) at util/virobject.c:322 #5 0x00007fe650ce65b1 in virSecurityManagerGetModel ( mgr=mgr@entry=0x7fe64006eb20) at security/security_manager.c:236 #6 0x00007fe650ce994c in virSecuritySELinuxSecurityVerify ( mgr=0x7fe64006eb20, def=<optimized out>) at security/security_selinux.c:1806 #7 0x00007fe650ce7251 in virSecurityManagerVerify (mgr=0x7fe64006eb20, def=def@entry=0x7fe63400ac20) at security/security_manager.c:573 #8 0x00007fe650ce3cd4 in virSecurityStackVerify (mgr=<optimized out>, def=0x7fe63400ac20) at security/security_stack.c:125 #9 0x00007fe650ce7251 in virSecurityManagerVerify (mgr=0x7fe64001cc50, def=def@entry=0x7fe63400ac20) at security/security_manager.c:573