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btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()

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If we have an unexpected reloc_root for our root, we jump to the out label
but never drop the reference we obtained for root, resulting in a leak.
Add a missing btrfs_put_root() call.

Fixes: 24213fa46c ("btrfs: do proper error handling in merge_reloc_roots")
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana
2026-06-11 15:16:21 +01:00
committed by David Sterba
parent a2d8d5647e
commit ce6050bafb
1 changed files with 1 additions and 0 deletions
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fs/btrfs/relocation.c
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@@ -1912,6 +1912,7 @@ void merge_reloc_roots(struct reloc_control *rc)
* corruption, e.g. bad reloc tree key offset.
*/
ret = -EINVAL;
btrfs_put_root(root);
goto out;
}
ret = merge_reloc_root(rc, root);