raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-06 01:49:46 +00:00
Code Issues Projects Releases Wiki Activity

ovl: fix getcwd() failure after unsuccessful rmdir

Browse Source 
[ Upstream commit ce9113bbcb ]

ovl_remove_upper() should do d_drop() only after it successfully
removes the dir, otherwise a subsequent getcwd() system call will
fail, breaking userspace programs.

This is to fix: https://bugzilla.kernel.org/show_bug.cgi?id=110491

Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Reviewed-by: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
This commit is contained in:
Rui Wang
2016-01-08 23:09:59 +08:00
committed by Sasha Levin
parent 7ce08a0c99
commit e786702fff
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
fs/overlayfs/dir.c
View File

@@ -618,7 +618,8 @@ static int ovl_remove_upper(struct dentry *dentry, bool is_dir)
* sole user of this dentry. Too tricky... Just unhash for
* now.
*/
d_drop(dentry);
if (!err)
d_drop(dentry);
mutex_unlock(&dir->i_mutex);
return err;