This is a note to let you know that I've just added the patch titled
Make stat/lstat/fstatat pass AT_NO_AUTOMOUNT to vfs_statx()
to the 4.11-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:
make-stat-lstat-fstatat-pass-at_no_automount-to-vfs_statx.patch
and it can be found in the queue-4.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From deccf497d804a4c5fca2dbfad2f104675a6f9102 Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@xxxxxxxxxx>
Date: Thu, 4 May 2017 23:30:16 +0100
Subject: Make stat/lstat/fstatat pass AT_NO_AUTOMOUNT to vfs_statx()
From: David Howells <dhowells@xxxxxxxxxx>
commit deccf497d804a4c5fca2dbfad2f104675a6f9102 upstream.
stat/lstat/fstatat need to pass AT_NO_AUTOMOUNT to vfs_statx() as the
pre-statx code didn't set LOOKUP_AUTOMOUNT, even though fstatat() accepted
the AT_NO_AUTOMOUNT flag.
Fixes: a528d35e8bfc ("statx: Add a system call to make enhanced file info available")
Reported-by: Ian Kent <raven@xxxxxxxxxx>
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Tested-by: Ian Kent <raven@xxxxxxxxxx>
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/fs.h | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2921,17 +2921,19 @@ extern int vfs_statx_fd(unsigned int, st
static inline int vfs_stat(const char __user *filename, struct kstat *stat)
{
- return vfs_statx(AT_FDCWD, filename, 0, stat, STATX_BASIC_STATS);
+ return vfs_statx(AT_FDCWD, filename, AT_NO_AUTOMOUNT,
+ stat, STATX_BASIC_STATS);
}
static inline int vfs_lstat(const char __user *name, struct kstat *stat)
{
- return vfs_statx(AT_FDCWD, name, AT_SYMLINK_NOFOLLOW,
+ return vfs_statx(AT_FDCWD, name, AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT,
stat, STATX_BASIC_STATS);
}
static inline int vfs_fstatat(int dfd, const char __user *filename,
struct kstat *stat, int flags)
{
- return vfs_statx(dfd, filename, flags, stat, STATX_BASIC_STATS);
+ return vfs_statx(dfd, filename, flags | AT_NO_AUTOMOUNT,
+ stat, STATX_BASIC_STATS);
}
static inline int vfs_fstat(int fd, struct kstat *stat)
{
Patches currently in stable-queue which might be from dhowells@xxxxxxxxxx are
queue-4.11/make-stat-lstat-fstatat-pass-at_no_automount-to-vfs_statx.patch