From f15fb3d41543244d1179f423da4a4832a55bc050 Mon Sep 17 00:00:00 2001 From: Mark Harmstone Date: Fri, 20 Feb 2026 12:53:17 +0000 Subject: [PATCH] btrfs: fix chunk map leak in btrfs_map_block() after btrfs_chunk_map_num_copies() Fix a chunk map leak in btrfs_map_block(): if we return early with -EINVAL, we're not freeing the chunk map that we've just looked up. Fixes: 0ae653fbec2b ("btrfs: reduce chunk_map lookups in btrfs_map_block()") CC: stable@vger.kernel.org # 6.12+ Reviewed-by: Filipe Manana Signed-off-by: Mark Harmstone Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/volumes.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 50f7aae70418..b8cbd3ecb94d 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6921,8 +6921,10 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op, } num_copies = btrfs_chunk_map_num_copies(map); - if (io_geom.mirror_num > num_copies) - return -EINVAL; + if (io_geom.mirror_num > num_copies) { + ret = -EINVAL; + goto out; + } map_offset = logical - map->start; io_geom.raid56_full_stripe_start = (u64)-1;