5:23 a.m.
On Mon, Nov 23, 2009 at 10:08:17PM +0000, Terje Marthinussen wrote:
[ 987.286791] libvirtd[3193]: segfault at 10 ip 00007f921b4546b4 sp
00007f9216e165e0 error 4 in libpthread-2.10.1.so[7f921b44a000+17000]
Ok, so this is the libvirtd daemon crash
>From GDB
06:45:32.434: error : qemuMonitorCommandWithHandler:290 : cannot send monitor command
'info cpus': Connection reset by peer
Interestingly this suggests that QEMU itself had quit/crashed during
startup. You can check /var/log/libvirt/qemu//$GUESTNAME.log to find
out what problem QEMU itself had.
For whatever reason, this seems to then trigger the libvirtd crash
06:45:32.434: error : qemuMonitorTextGetCPUInfo:436 : internal error
cannot run monitor command to fetch CPU thread info
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f485bfff910 (LWP 18120)]
0x00007f48657fb6b4 in pthread_mutex_unlock () from /lib/libpthread.so.0
(gdb) bt
#0 0x00007f48657fb6b4 in pthread_mutex_unlock () from /lib/libpthread.so.0
#1 0x0000000000431101 in qemuDomainObjExitMonitorWithDriver (driver=0x11f0110,
obj=0x12114f0) at qemu/qemu_driver.c:318
#2 0x000000000043f436 in qemudStartVMDaemon (conn=<value optimized out>,
driver=0x11f0110, vm=0x12114f0,
migrateFrom=<value optimized out>, stdin_fd=<value optimized out>) at
qemu/qemu_driver.c:2320
#3 0x00000000004407c4 in qemudDomainStart (dom=0x11f0330) at qemu/qemu_driver.c:4370
#4 0x00007f4865a621e7 in virDomainCreate (domain=0x11f0330) at libvirt.c:4509
#5 0x0000000000420d68 in remoteDispatchDomainCreate (server=<value optimized out>,
client=<value optimized out>, conn=0x1219da0,
hdr=<value optimized out>, rerr=0x7f485bffedf0, args=<value optimized
out>, ret=0x7f485bffeed0) at remote.c:853
#6 0x00000000004228e1 in remoteDispatchClientCall (server=<value optimized out>,
client=0x7f485c000d30, msg=0x7f485c080f00)
at dispatch.c:506
#7 0x0000000000422c93 in remoteDispatchClientRequest (server=0x11e2790,
client=0x7f485c000d30, msg=0x7f485c080f00) at dispatch.c:388
#8 0x000000000041625c in qemudWorker (data=<value optimized out>) at
libvirtd.c:1518
#9 0x00007f48657f7a04 in start_thread () from /lib/libpthread.so.0
#10 0x00007f48655617bd in clone () from /lib/libc.so.6
#11 0x0000000000000000 in ?? ()
(gdb) select 2
(gdb) info locals
argv = 0x0
tmp = <value optimized out>
progenv = 0x0
i = 1
ret = 1
sb = {st_dev = 64512, st_ino = 140307, st_nlink = 1, st_mode = 33261, st_uid = 0, st_gid
= 0, __pad0 = 0, st_rdev = 0,
st_size = 2293664, st_blksize = 4096, st_blocks = 4480, st_atim = {tv_sec = 1258937087,
tv_nsec = 967226499}, st_mtim = {
tv_sec = 1257180462, tv_nsec = 0}, st_ctim = {tv_sec = 1258886336, tv_nsec =
104908677}, __unused = {0, 0, 0}}
tapfds = 0x0
ntapfds = 1
qemuCmdFlags = 9436542
keepfd = {fds_bits = {262144, 0 <repeats 15 times>}}
emulator = <value optimized out>
child = 18145
pos = <value optimized out>
ebuf =
"\220v\036\001\000\000\000\000\060|WeH\177\000\000(\000\000\000\060\000\000\000\000\354\377[H\177\000\000@\353\377[H\177\000\000`\351\377[H\177\000\000\377\377\377\377H\177\000\000\233\017\037\001\000\000\000\000\326\063G\000\000\000\000\000@\247~eH\177\000\000\200\307OeH\177\000\000\240\306OeH\177\000\000JST\000\071\000\000\000\300\352\377[H\177\000\000\342\000\000\000\000\000\000\000\342\000\000\000\000\000\000\000\273\340G\000\000\000\000\000\300\352\377[H\177\000\000K\000\000\000\000\000\000\000`\351\377[H\177\000\000@\354\377[H\177\000\000P\352\377[H\177\000\000\001\000\000\000\000\000\000\000\320\352\377[H\177\000\000$\000\000\000\000\000\000\000py\255eH\177\000\000@\354\377[H\177\000\000\060|WeH\177\000\000\001\200\255\373\000\000\000\000\260\351\377[H\177\000\000\220\354\377[H\177\000\000\240\352\377["...
pidfile = 0x0
logfile = 15
hookData = {conn = 0x1219da0, vm = 0x12114f0, driver = 0x11f0110}
__FUNCTION__ = "qemudStartVMDaemon"
__func__ = "qemudStartVMDaemon"
If you are able to reproduce this crash reliably, can you edit the
/etc/libvirt/libvirtd.conf file and add
log_filters="1:qemu"
log_outputs="1:file:/var/log/libvirtd.log"
and then restart libvirtd, and try to make it crash again. Then send
us the log file
Regards,
Daniel
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