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unlock the monitor when unwatching the monitor

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Steps to reproduce this bug:
# virsh qemu-monitor-command domain 'cpu_set 2 online' --hmp
The domain has 2 cpus, and we try to set the third cpu online.
The qemu crashes, and this command will hang.

The reason is that the refs is not 1 when we unwatch the monitor.
We lock the monitor, but we do not unlock it. So virCondWait()
will be blocked.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
This commit is contained in:
Wen Congyang 2011-03-16 14:54:28 +08:00 committed by Eric Blake
parent 838f669682
commit 9741f3461b
1 changed files with 2 additions and 1 deletions
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3
src/qemu/qemu_monitor.c
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@ -239,7 +239,8 @@ qemuMonitorUnwatch(void *monitor)
qemuMonitorPtr mon = monitor;
qemuMonitorLock(mon);
qemuMonitorUnref(mon);
if (qemuMonitorUnref(mon) > 0)
qemuMonitorUnlock(mon);
}
static int