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authorFilipe Manana <fdmanana@suse.com>2023-07-03 12:03:21 +0100
committerDavid Sterba <dsterba@suse.com>2023-07-18 03:12:57 +0200
commitf1a07c2b4e2c473ec322b8b9ece071b8c88a3512 (patch)
tree9d9e98e292d26f395a0abe7a1b3d366cd1a7cebb /fs
parent0657b20c5a76c938612f8409735a8830d257866e (diff)
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btrfs: zoned: fix memory leak after finding block group with super blocks
At exclude_super_stripes(), if we happen to find a block group that has super blocks mapped to it and we are on a zoned filesystem, we error out as this is not supposed to happen, indicating either a bug or maybe some memory corruption for example. However we are exiting the function without freeing the memory allocated for the logical address of the super blocks. Fix this by freeing the logical address. Fixes: 12659251ca5d ("btrfs: implement log-structured superblock for ZONED mode") CC: stable@vger.kernel.org # 5.10+ Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/block-group.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c
index f53297726238..b7da14848686 100644
--- a/fs/btrfs/block-group.c
+++ b/fs/btrfs/block-group.c
@@ -2088,6 +2088,7 @@ static int exclude_super_stripes(struct btrfs_block_group *cache)
/* Shouldn't have super stripes in sequential zones */
if (zoned && nr) {
+ kfree(logical);
btrfs_err(fs_info,
"zoned: block group %llu must not contain super block",
cache->start);