diff --git a/kernel/futex/core.c b/kernel/futex/core.c
index a061f54b606d..94ebd2c25b2a 100644
--- a/kernel/futex/core.c
+++ b/kernel/futex/core.c
@@ -47,6 +47,7 @@
 #include <linux/vmalloc.h>
 #include <linux/kmemleak.h>
 #include <linux/wait_bit.h>
+#include <linux/delay.h>
 
 #include <vdso/futex.h>
 
@@ -1359,6 +1360,7 @@ static void exit_pi_state_list(struct task_struct *curr)
 	 */
 	WARN_ON(curr != current);
 	guard(private_hash)(current->mm);
+	if (strcmp(current->comm, "SLOW-1") == 0) mdelay(1000);
 	/*
 	 * We are a ZOMBIE and nobody can enqueue itself on
 	 * pi_state_list anymore, but we have to be careful
@@ -1945,6 +1947,7 @@ static int futex_hash_allocate(unsigned int hash_slots, unsigned int flags)
 				 * reference on the existing hash.
 				 */
 				futex_ref_drop(cur);
+				if (strcmp(current->comm, "SLOW-2") == 0) mdelay(10000);
 			}
 
 			if (new) {