qemu: qapi: fix potential SIGSEGV in virQEMUQAPISchemaTraverseObject()

We need to check obj ptr before passing it to
virJSONValueObjectHasKey(). If it's NULL it will fail with SIGSEGV.

Signed-off-by: Nikolai Barybin <nikolai.barybin@virtuozzo.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>

diff --git a/src/qemu/qemu_qapi.c b/src/qemu/qemu_qapi.c
index 184c0a965ff79b39dae545140e52bbdf237397cd..a2fef550192673951eef871d03464e6e394fd9f0 100644 (file)
--- a/src/qemu/qemu_qapi.c
+++ b/src/qemu/qemu_qapi.c
@@ -180,7 +180,7 @@ virQEMUQAPISchemaTraverseObject(virJSONValue *cur,
     } else {
         obj = virQEMUQAPISchemaObjectGet("members", query, "name", cur);
 
-        if (modifier == '*' &&
+        if (modifier == '*' && obj &&
             !virJSONValueObjectHasKey(obj, "default"))
             return 0;
     }