diff --git a/ipc/shm.c b/ipc/shm.c
index 23256b8..1a314c8 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -764,8 +764,7 @@
 			if (euid != shp->shm_perm.uid &&
 			    euid != shp->shm_perm.cuid)
 				goto out_unlock;
-			if (cmd == SHM_LOCK &&
-			    !current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur)
+			if (cmd == SHM_LOCK && !rlimit(RLIMIT_MEMLOCK))
 				goto out_unlock;
 		}