[Qemu-devel] [PULL 1/2] HMP: Initialize err before using

["Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>]

From: zhangjixiang <jixiang_zhang@h3c.com>

When bdrv_snapshot_delete return fail, the errp will not be
assigned a valid value in error_propagate as errp didn't be
initialized in hmp_delvm, then error_reportf_err will use an
uninitialized value(call by hmp_delvm), and qemu crash.

Signed-off-by: zhangjixiang <jixiang_zhang@h3c.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
 hmp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hmp.c b/hmp.c
index ba9e299ee2..fd13d5b56a 100644
--- a/hmp.c
+++ b/hmp.c
@@ -1321,7 +1321,7 @@ void hmp_savevm(Monitor *mon, const QDict *qdict)
 void hmp_delvm(Monitor *mon, const QDict *qdict)
 {
     BlockDriverState *bs;
-    Error *err;
+    Error *err = NULL;
     const char *name = qdict_get_str(qdict, "name");
 
     if (bdrv_all_delete_snapshot(name, &bs, &err) < 0) {
-- 
2.14.3