A NULL 'list' passed into function dump_qlist() isn't correctly
validated and can be passed to qlist_first() where it is dereferenced.
Given that dump_qlist() is static, and callers already do the right
thing, just add an assert to catch future potential bugs (plus the
added benefit of suppressing a warning from a static analysis tool
and removing this noise will help us better find real issues).
Signed-off-by: Liam Merwick <liam.merw...@oracle.com>
Reviewed-by: Eric Blake <ebl...@redhat.com>
---
block/qapi.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/block/qapi.c b/block/qapi.c
index c66f949db839..e81be604217c 100644
--- a/block/qapi.c
+++ b/block/qapi.c
@@ -740,6 +740,8 @@ static void dump_qlist(fprintf_function func_fprintf, void
*f, int indentation,
const QListEntry *entry;
int i = 0;
+ assert(list);
+
for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) {
QType type = qobject_type(entry->value);
bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST);
--
1.8.3.1
