[libvirt] [PATCH] qemu: check for json allocation failure
Detected by Coverity. Introduced in commit b1b5b51.
* src/qemu/qemu_monitor_json.c (qemuMonitorJSONGetBlockInfo):
Avoid null dereference on OOM.
---
src/qemu/qemu_monitor_json.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 18d1c9f..cd8f1e5 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -1364,6 +1364,9 @@ int qemuMonitorJSONGetBlockInfo(qemuMonitorPtr mon,
virJSONValuePtr reply = NULL;
virJSONValuePtr devices;
+ if (!cmd)
+ return -1;
+
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
--
1.7.4.4