3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Heiko Carstens <[email protected]>

commit 592f6b842f64e416c7598a1b97c649b34241e22d upstream.

Commit 91c2e0bcae72 ("unify compat fanotify_mark(2), switch to
COMPAT_SYSCALL_DEFINE") added a new unified compat fanotify_mark syscall
to be used by all architectures.

Unfortunately the unified version merges the split mask parameter in a
wrong way: the lower and higher word got swapped.

This was discovered with glibc's tst-fanotify test case.

Signed-off-by: Heiko Carstens <[email protected]>
Reported-by: Andreas Krebbel <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Acked-by: "David S. Miller" <[email protected]>
Acked-by: Al Viro <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Ralf Baechle <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 fs/notify/fanotify/fanotify_user.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -867,9 +867,9 @@ COMPAT_SYSCALL_DEFINE6(fanotify_mark,
 {
        return sys_fanotify_mark(fanotify_fd, flags,
 #ifdef __BIG_ENDIAN
-                               ((__u64)mask1 << 32) | mask0,
-#else
                                ((__u64)mask0 << 32) | mask1,
+#else
+                               ((__u64)mask1 << 32) | mask0,
 #endif
                                 dfd, pathname);
 }


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