Patch "vfs: show_vfsstat: do not ignore errors from show_devname method" has been added to the 4.5-stable tree

Patch "vfs: show_vfsstat: do not ignore errors from show_devname method" has been added to the 4.5-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    vfs: show_vfsstat: do not ignore errors from show_devname method

to the 4.5-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:
     vfs-show_vfsstat-do-not-ignore-errors-from-show_devname-method.patch
and it can be found in the queue-4.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 5f8d498d4364f544fee17125787a47553db02afa Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Thu, 19 Mar 2015 11:10:54 +0000
Subject: vfs: show_vfsstat: do not ignore errors from show_devname method

From: Dmitry V. Levin <ldv@altlinux.org>

commit 5f8d498d4364f544fee17125787a47553db02afa upstream.

Explicitly check show_devname method return code and bail out in case
of an error.  This fixes regression introduced by commit 9d4d65748a5c.

Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/proc_namespace.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/proc_namespace.c
+++ b/fs/proc_namespace.c
@@ -199,6 +199,8 @@ static int show_vfsstat(struct seq_file
 	if (sb->s_op->show_devname) {
 		seq_puts(m, "device ");
 		err = sb->s_op->show_devname(m, mnt_path.dentry);
+		if (err)
+			goto out;
 	} else {
 		if (r->mnt_devname) {
 			seq_puts(m, "device ");


Patches currently in stable-queue which might be from ldv@altlinux.org are

queue-4.5/vfs-show_vfsstat-do-not-ignore-errors-from-show_devname-method.patch