Commit 5f8d498d authored Mar 19, 2015 by Dmitry V. Levin Committed by Al Viro Mar 16, 2016

vfs: show_vfsstat: do not ignore errors from show_devname method



Explicitly check show_devname method return code and bail out in case
of an error.  This fixes regression introduced by commit 9d4d6574.

Cc: stable@vger.kernel.org
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

parent a5b3a80b

fs/proc_namespace.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -199,6 +199,8 @@ static int show_vfsstat(struct seq_file m, struct vfsmount mnt)
		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 ");