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fs/affs: release old buffer head on error path 

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: 6b4657667b ("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>
This commit is contained in:
Pan Bian 2021-01-20 00:51:13 -08:00 committed by Greg Kroah-Hartman
parent b2b5c3aec8
commit 3e9b85cabe
1 changed files with 3 additions and 1 deletions
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4
fs/affs/namei.c
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@ -460,8 +460,10 @@ affs_xrename(struct inode *old_dir, struct dentry *old_dentry,
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);