bb_count would be 0 if util_region_badblocks_to_json() returns NULL. Initialize bb_count to 0 by default. Reported-by: Andy Rudoff <andy.rudoff(a)intel.com&gt; Signed-off-by: Dave Jiang <dave.jiang(a)intel.com&gt; --- ndctl/list.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/ndctl/list.c b/ndctl/list.c index 4d5050c..ad710ed 100644 --- a/ndctl/list.c +++ b/ndctl/list.c @@ -138,7 +138,7 @@ static struct json_object *region_to_json(struct ndctl_region *region, struct json_object *jobj, *jbbs, *jmappings = NULL; struct ndctl_interleave_set *iset; struct ndctl_mapping *mapping; - unsigned int bb_count; + unsigned int bb_count = 0; if (!jregion) return NULL;