[libvirt] [PATCH] qemu: add pointer check in qemuMonitorLastError
We found a exception when libvirt occurrs segmentation fault.
thread 1 is waiting object lock in qemuConnectMonitor,
qemu process exits and sends EOF event as well, so thread 2 invokes
qemuMonitorLastError but pointer mon is NULL.
Signed-off-by: Xu Yandong <xuyandong2(a)huawei.com>
---
src/qemu/qemu_monitor.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index aa230b3306..28f18391a5 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -1103,7 +1103,7 @@ qemuMonitorSend(qemuMonitorPtr mon,
virErrorPtr
qemuMonitorLastError(qemuMonitorPtr mon)
{
- if (mon->lastError.code == VIR_ERR_OK)
+ if (!mon || mon->lastError.code == VIR_ERR_OK)
return NULL;
return virErrorCopyNew(&mon->lastError);
--
2.18.1