(gdb) thread apply all bt

Thread 7 (Thread 0x7f1081ba7950 (LWP 26832)):
#0  0x00007f10876452e9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x0000000000432135 in virCondWait (c=0x162cfc8, m=0x162cfa0) at util/threads-pthread.c:84
#2  0x00000000004171ea in qemudWorker (data=0x1631320) at libvirtd.c:1496
#3  0x00007f10876413ba in start_thread () from /lib/libpthread.so.0
#4  0x00007f10873adfcd in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f10823a8950 (LWP 26831)):
#0  0x00007f10876452e9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x0000000000432135 in virCondWait (c=0x162cfc8, m=0x162cfa0) at util/threads-pthread.c:84
#2  0x00000000004171ea in qemudWorker (data=0x1631308) at libvirtd.c:1496
#3  0x00007f10876413ba in start_thread () from /lib/libpthread.so.0
#4  0x00007f10873adfcd in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f1082ba9950 (LWP 26830)):
#0  0x00007f10876452e9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x0000000000432135 in virCondWait (c=0x162cfc8, m=0x162cfa0) at util/threads-pthread.c:84
#2  0x00000000004171ea in qemudWorker (data=0x16312f0) at libvirtd.c:1496
#3  0x00007f10876413ba in start_thread () from /lib/libpthread.so.0
#4  0x00007f10873adfcd in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f10833aa950 (LWP 26829)):
#0  0x00007f1087647a94 in __lll_lock_wait () from /lib/libpthread.so.0
#1  0x00007f1087643190 in _L_lock_102 () from /lib/libpthread.so.0
#2  0x00007f1087642a7e in pthread_mutex_lock () from /lib/libpthread.so.0
#3  0x000000000043207a in virMutexLock (m=0x164a0f0) at util/threads-pthread.c:52
#4  0x000000000045be29 in qemuMonitorLock (mon=0x164a0f0) at qemu/qemu_monitor.c:82
#5  0x0000000000439a24 in qemuDomainObjEnterMonitorWithDriver (driver=0x1631720, obj=0x1648da0) at qemu/qemu_driver.c:309
#6  0x000000000043c8d0 in qemudInitCpus (conn=0x1638530, driver=0x1631720, vm=0x1648da0, migrateFrom=0x0) at qemu/qemu_driver.c:1427
#7  0x000000000043f14e in qemudStartVMDaemon (conn=0x1638530, driver=0x1631720, vm=0x1648da0, migrateFrom=0x0, stdin_fd=-1)
    at qemu/qemu_driver.c:2327
#8  0x00000000004449ad in qemudDomainStart (dom=0x1648a80) at qemu/qemu_driver.c:4384
#9  0x00007f108a4ae2b3 in virDomainCreate (domain=0x1648a80) at libvirt.c:4509
#10 0x000000000041d567 in remoteDispatchDomainCreate (server=0x162cfa0, client=0x1638690, conn=0x1638530, hdr=0x168b150, 
    rerr=0x7f10833a9e30, args=0x7f10833a9ed0, ret=0x7f10833a9f20) at remote.c:853
---Type <return> to continue, or q <return> to quit---
#11 0x000000000042619f in remoteDispatchClientCall (server=0x162cfa0, client=0x1638690, msg=0x164b140) at dispatch.c:506
#12 0x0000000000425d74 in remoteDispatchClientRequest (server=0x162cfa0, client=0x1638690, msg=0x164b140) at dispatch.c:388
#13 0x00000000004172af in qemudWorker (data=0x16312d8) at libvirtd.c:1518
#14 0x00007f10876413ba in start_thread () from /lib/libpthread.so.0
#15 0x00007f10873adfcd in clone () from /lib/libc.so.6
#16 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f1083bab950 (LWP 26828)):
#0  0x00007f10876452e9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x0000000000432135 in virCondWait (c=0x162cfc8, m=0x162cfa0) at util/threads-pthread.c:84
#2  0x00000000004171ea in qemudWorker (data=0x16312c0) at libvirtd.c:1496
#3  0x00007f10876413ba in start_thread () from /lib/libpthread.so.0
#4  0x00007f10873adfcd in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f10843ac950 (LWP 26826)):
#0  0x00007f1087647a94 in __lll_lock_wait () from /lib/libpthread.so.0
#1  0x00007f1087643190 in _L_lock_102 () from /lib/libpthread.so.0
#2  0x00007f1087642a7e in pthread_mutex_lock () from /lib/libpthread.so.0
#3  0x000000000043207a in virMutexLock (m=0x1648da0) at util/threads-pthread.c:52
#4  0x00007f108a491abf in virDomainObjLock (obj=0x1648da0) at conf/domain_conf.c:5344
#5  0x000000000045ccb9 in qemuMonitorIO (watch=8, fd=16, events=0, opaque=0x164a0f0) at qemu/qemu_monitor.c:440
#6  0x00000000004132af in virEventDispatchHandles (nfds=6, fds=0x7f107c0008f0) at event.c:473
#7  0x00000000004138b7 in virEventRunOnce () at event.c:601
#8  0x00000000004188f7 in qemudOneLoop () at libvirtd.c:2165
#9  0x0000000000418e26 in qemudRunLoop (opaque=0x162cfa0) at libvirtd.c:2274
#10 0x00007f10876413ba in start_thread () from /lib/libpthread.so.0
#11 0x00007f10873adfcd in clone () from /lib/libc.so.6
#12 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f108adcc780 (LWP 26823)):
#0  0x00007f1087641c95 in pthread_join () from /lib/libpthread.so.0
#1  0x000000000041bb39 in main (argc=1, argv=0x7fff92e04068) at libvirtd.c:3183