From ac0811538b40bb92d339d22364026ed91dfdd147 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Thu, 7 Jul 2005 17:57:27 -0700 Subject: [PATCH] [PATCH] namespace.c: fix mnt_namespace zeroing for expired mounts This patch clears mnt_namespace in an expired mount. If mnt_namespace is not cleared, it's possible to attach a new mount to the already detached mount, because check_mnt() can return true. The effect is a resource leak, since the resulting tree will never be freed. Signed-off-by: Miklos Szeredi Acked-by: Christoph Hellwig Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/namespace.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/namespace.c b/fs/namespace.c index 2b4635e43ae8..7fd56eeb21bf 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -847,6 +847,7 @@ static void expire_mount(struct vfsmount *mnt, struct list_head *mounts) /* delete from the namespace */ list_del_init(&mnt->mnt_list); + mnt->mnt_namespace = NULL; detach_mnt(mnt, &old_nd); spin_unlock(&vfsmount_lock); path_release(&old_nd); -- 2.11.0