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qemu: check for json allocation failure

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Detected by Coverity.  Introduced in commit b1b5b51.

* src/qemu/qemu_monitor_json.c (qemuMonitorJSONGetBlockInfo):
Avoid null dereference.
This commit is contained in:
Eric Blake 2011-10-12 18:10:24 -06:00
parent 430156cf32
commit ce521f242a
1 changed files with 3 additions and 0 deletions
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src/qemu/qemu_monitor_json.c
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@ -1364,6 +1364,9 @@ int qemuMonitorJSONGetBlockInfo(qemuMonitorPtr mon,
virJSONValuePtr reply = NULL; virJSONValuePtr reply = NULL;
virJSONValuePtr devices; virJSONValuePtr devices;
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply); ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0) if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply); ret = qemuMonitorJSONCheckError(cmd, reply);