From 7969e77a73164b418da851cbae35cdd6c1b43fee Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Fri, 17 Jun 2016 17:13:36 +0100 Subject: [PATCH] Btrfs: send, add missing error check for calls to path_loop() The function path_loop() can return a negative integer, signaling an error, 0 if there's no path loop and 1 if there's a path loop. We were treating any non zero values as meaning that a path loop exists. Fix this by explicitly checking for errors and gracefully return them to user space. Signed-off-by: Filipe Manana --- fs/btrfs/send.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 993e1ba..0dc05bb 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -3200,6 +3200,8 @@ static int apply_dir_move(struct send_ctx *sctx, struct pending_dir_move *pm) sctx->send_progress = sctx->cur_ino + 1; ret = path_loop(sctx, name, pm->ino, pm->gen, &ancestor); + if (ret < 0) + goto out; if (ret) { LIST_HEAD(deleted_refs); ASSERT(ancestor > BTRFS_FIRST_FREE_OBJECTID); -- 2.7.4