diff --git a/ipc/namespace.c b/ipc/namespace.c
index 1e71353bdb4a..75aa7b469348 100644
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -96,7 +96,7 @@ static struct ipc_namespace *create_ipc_ns(struct user_namespace *user_ns,
 fail_mq_sysctls:
 	retire_mq_sysctls(ns);
 fail_mq_mount:
-	mntput(ns->mq_mnt);
+	kern_unmount(ns->mq_mnt);
 fail_put:
 	put_user_ns(ns->user_ns);
 	ns_common_free(ns);