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-rw-r--r--mm/slab_common.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index f0ab6d4ceb4c..0d95ddea13b0 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -903,7 +903,8 @@ static void flush_memcg_workqueue(struct kmem_cache *s)
* deactivates the memcg kmem_caches through workqueue. Make sure all
* previous workitems on workqueue are processed.
*/
- flush_workqueue(memcg_kmem_cache_wq);
+ if (likely(memcg_kmem_cache_wq))
+ flush_workqueue(memcg_kmem_cache_wq);
/*
* If we're racing with children kmem_cache deactivation, it might