This is a note to let you know that I've just added the patch titled
ovl: fix dentry leak for default_permissions
to the 4.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ovl-fix-dentry-leak-for-default_permissions.patch
and it can be found in the queue-4.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a4859d75944a726533ab86d24bb5ffd1b2b7d6cc Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Date: Wed, 29 Jun 2016 08:26:59 +0200
Subject: ovl: fix dentry leak for default_permissions
From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
commit a4859d75944a726533ab86d24bb5ffd1b2b7d6cc upstream.
When using the 'default_permissions' mount option, ovl_permission() on
non-directories was missing a dput(alias), resulting in "BUG Dentry still
in use".
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Fixes: 8d3095f4ad47 ("ovl: default permissions")
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/overlayfs/inode.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -121,16 +121,18 @@ int ovl_permission(struct inode *inode,
err = vfs_getattr(&realpath, &stat);
if (err)
- return err;
+ goto out_dput;
+ err = -ESTALE;
if ((stat.mode ^ inode->i_mode) & S_IFMT)
- return -ESTALE;
+ goto out_dput;
inode->i_mode = stat.mode;
inode->i_uid = stat.uid;
inode->i_gid = stat.gid;
- return generic_permission(inode, mask);
+ err = generic_permission(inode, mask);
+ goto out_dput;
}
/* Careful in RCU walk mode */
Patches currently in stable-queue which might be from mszeredi@xxxxxxxxxx are
queue-4.6/ovl-copy-up-underlying-inode-s-i_mode-to-overlay-inode.patch
queue-4.6/ovl-verify-upper-dentry-in-ovl_remove_and_whiteout.patch
queue-4.6/ovl-fix-dentry-leak-for-default_permissions.patch
queue-4.6/ovl-get_write_access-in-truncate.patch
queue-4.6/ovl-handle-attr_kill.patch
queue-4.6/vfs-add-d_real_inode-helper.patch
queue-4.6/af_unix-fix-hard-linked-sockets-on-overlay.patch
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