From: Pan Bian <bianpan2016@xxxxxxx>
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@xxxxxxxxxxxxxxx # 4.14+
Signed-off-by: Pan Bian <bianpan2016@xxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/affs/namei.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -460,8 +460,10 @@ 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);
