linux-kernel - [PATCH] btrfs: Fix an error handling path in btrfs

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Date:   Mon, 12 Dec 2022 21:14:17 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>,
        Sweet Tea Dorminy <sweettea-kernel@...miny.me>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-btrfs@...r.kernel.org
Subject: [PATCH] btrfs: Fix an error handling path in btrfs_rename()

If new_whiteout_inode() fails, some resources need to be freed.
Add the missing goto to the error handling path.

Fixes: ab3c5c18e8fa ("btrfs: setup qstr from dentrys using fscrypt helper")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 fs/btrfs/inode.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 8bcad9940154..2ead7b1bdbaf 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -9377,8 +9377,10 @@ static int btrfs_rename(struct user_namespace *mnt_userns,
 
 	if (flags & RENAME_WHITEOUT) {
 		whiteout_args.inode = new_whiteout_inode(mnt_userns, old_dir);
-		if (!whiteout_args.inode)
-			return -ENOMEM;
+		if (!whiteout_args.inode) {
+			ret = -ENOMEM;
+			goto out_fscrypt_names;
+		}
 		ret = btrfs_new_inode_prepare(&whiteout_args, &trans_num_items);
 		if (ret)
 			goto out_whiteout_inode;
-- 
2.34.1