calculate_sizes() could be called in several places
like (red_zone/poison/order/store_user)_store() while
random_seq remains unchanged.
If random_seq is not NULL in calculate_sizes(), re-randomize it.
Signed-off-by: Peng Wang <rocking@xxxxxxxxxx>
---
mm/slub.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/mm/slub.c b/mm/slub.c
index 1e3d0ec4e200..2a9d18019545 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3583,6 +3583,15 @@ static int calculate_sizes(struct kmem_cache *s, int forced_order)
if (oo_objects(s->oo) > oo_objects(s->max))
s->max = s->oo;
+#ifdef CONFIG_SLAB_FREELIST_RANDOM
+ if (unlikely(s->random_seq)) {
+ kfree(s->random_seq);
+ s->random_seq = NULL;
+ if (init_cache_random_seq(s))
+ return 0;
+ }
+#endif
+
return !!oo_objects(s->oo);
}
--
2.19.1
