[PATCH] btrfs: fix a memory leak issue in read_one_chunk()

[Haoxiang Li]

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@xxxxxxxxxxxxxxx
Signed-off-by: Haoxiang Li <haoxiang_li2024@xxxxxxx>
---
 fs/btrfs/volumes.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index fb22d4425cb0..3f8afbd1ebb5 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -7155,6 +7155,7 @@ 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;
-- 
2.25.1