diff --git a/mm/slub.c b/mm/slub.c
index a2cd47d89e0aa1f159d8e9e6ed2dcee32969068f..704cfa34f9abe93f9a602b331024ab7169e73733 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1591,6 +1591,7 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
 	unsigned long flags;
 	unsigned int objsize;
 
+	might_sleep_if(gfpflags & __GFP_WAIT);
 	local_irq_save(flags);
 	c = get_cpu_slab(s, smp_processor_id());
 	objsize = c->objsize;