From: Haoxiang Li <haoxiang_li2024@163.com>
Date: Mon, 3 Mar 2025 02:42:33 +0000 (+0800)
Subject: btrfs: fix a leaked chunk map issue in read_one_chunk()
X-Git-Tag: v6.14-rc6~13^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=35d99c68af40a8ca175babc5a89ef7e2226fb3ca;p=thirdparty%2Fkernel%2Flinux.git

btrfs: fix a leaked chunk map issue in read_one_chunk()

Add btrfs_free_chunk_map() to free the memory allocated
by btrfs_alloc_chunk_map() if btrfs_add_chunk_map() fails.

Fixes: 7dc66abb5a47 ("btrfs: use a dedicated data structure for chunk maps")
CC: stable@vger.kernel.org
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index f6ae76815e4b5..6f8dcf59b5257 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -7151,6 +7151,7 @@ static int read_one_chunk(struct btrfs_key *key, struct extent_buffer *leaf,
 		btrfs_err(fs_info,
 			  "failed to add chunk map, start=%llu len=%llu: %d",
 			  map->start, map->chunk_len, ret);
+		btrfs_free_chunk_map(map);
 	}
 
 	return ret;