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btrfs: ref-verify: fix memory leak in btrfs_ref_tree_mod 

commit 468600c6ec upstream.

There is one error handling path that does not free ref, which may cause
a minor memory leak.

CC: stable@vger.kernel.org # 4.19+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Dinghao Liu 2020-10-21 13:36:55 +08:00 committed by Greg Kroah-Hartman
parent 062c9b04f6
commit 8266c23124
1 changed files with 1 additions and 0 deletions
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fs/btrfs/ref-verify.c
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@ -851,6 +851,7 @@ int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
"dropping a ref for a root that doesn't have a ref on the block");
dump_block_entry(fs_info, be);
dump_ref_action(fs_info, ra);
kfree(ref);
kfree(ra);
goto out_unlock;
}