In free path, we don't check number of cpu_partial, so one slab can
be linked in cpu partial list even if cpu_partial is 0. To prevent this,
we should check number of cpu_partial in put_cpu_partial().
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
diff --git a/mm/slub.c b/mm/slub.c
index 57707f0..7033b4f 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1955,6 +1955,9 @@ static void put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
int pages;
int pobjects;
+ if (!s->cpu_partial)
+ return;
+
do {
pages = 0;
pobjects = 0;
--
1.7.9.5
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