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);