From: Filipe Manana Date: Fri, 1 Oct 2021 12:52:31 +0000 (+0100) Subject: btrfs: deal with errors when replaying dir entry during log replay X-Git-Tag: v5.15-rc6~43^2~4 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e15ac6413745e3def00e663de00aea5a717311c1;p=thirdparty%2Fkernel%2Fstable.git btrfs: deal with errors when replaying dir entry during log replay At replay_one_one(), we are treating any error returned from btrfs_lookup_dir_item() or from btrfs_lookup_dir_index_item() as meaning that there is no existing directory entry in the fs/subvolume tree. This is not correct since we can get errors such as, for example, -EIO when reading extent buffers while searching the fs/subvolume's btree. So fix that and return the error to the caller when it is not -ENOENT. CC: stable@vger.kernel.org # 4.14+ Signed-off-by: Filipe Manana Reviewed-by: David Sterba Signed-off-by: David Sterba --- diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 491d4ba22cfc0..007b5051b2f1b 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -1988,7 +1988,14 @@ static noinline int replay_one_name(struct btrfs_trans_handle *trans, ret = -EINVAL; goto out; } - if (IS_ERR_OR_NULL(dst_di)) { + + if (dst_di == ERR_PTR(-ENOENT)) + dst_di = NULL; + + if (IS_ERR(dst_di)) { + ret = PTR_ERR(dst_di); + goto out; + } else if (!dst_di) { /* we need a sequence number to insert, so we only * do inserts for the BTRFS_DIR_INDEX_KEY types */