From 5d2288711ccc483feca73151c46ee835bda17839 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Tue, 6 Feb 2024 22:47:13 +0100 Subject: [PATCH] btrfs: send: handle unexpected inode in header process_recorded_refs() Change BUG_ON to proper error handling when an unexpected inode number is encountered. As the comment says this should never happen. Signed-off-by: David Sterba --- fs/btrfs/send.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 8c3ca4a5d923..3b3f38a76b00 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -4186,7 +4186,13 @@ static int process_recorded_refs(struct send_ctx *sctx, int *pending_move) * This should never happen as the root dir always has the same ref * which is always '..' */ - BUG_ON(sctx->cur_ino <= BTRFS_FIRST_FREE_OBJECTID); + if (unlikely(sctx->cur_ino <= BTRFS_FIRST_FREE_OBJECTID)) { + btrfs_err(fs_info, + "send: unexpected inode %llu in process_recorded_refs()", + sctx->cur_ino); + ret = -EINVAL; + goto out; + } valid_path = fs_path_alloc(); if (!valid_path) {