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Subject[PATCH 4.14 152/176] fs/affs: release old buffer head on error path
Date
From: Pan Bian <bianpan2016@163.com>

commit 70779b897395b330ba5a47bed84f94178da599f9 upstream.

The reference count of the old buffer head should be decremented on path
that fails to get the new buffer head.

Fixes: 6b4657667ba0 ("fs/affs: add rename exchange")
CC: stable@vger.kernel.org # 4.14+
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/affs/namei.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -461,8 +461,10 @@ affs_xrename(struct inode *old_dir, stru
return -EIO;

bh_new = affs_bread(sb, d_inode(new_dentry)->i_ino);
- if (!bh_new)
+ if (!bh_new) {
+ affs_brelse(bh_old);
return -EIO;
+ }

/* Remove old header from its parent directory. */
affs_lock_dir(old_dir);

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