diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 77e4b5223867a2f5ca6f49454ab16cb7e3f22df2..102c519836f61c7deea6f789cebb24030d12154f 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -1059,6 +1059,11 @@ static int check_ptr_alignment(struct bpf_verifier_env *env,
 		break;
 	case PTR_TO_STACK:
 		pointer_desc = "stack ";
+		/* The stack spill tracking logic in check_stack_write()
+		 * and check_stack_read() relies on stack accesses being
+		 * aligned.
+		 */
+		strict = true;
 		break;
 	default:
 		break;