diff --git a/mm/slub.c b/mm/slub.c
index a2cd47d..704cfa3 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1591,6 +1591,7 @@
 	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;