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compat: fix sys_fanotify_mark

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Commit 91c2e0bcae ("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]>
Cc: <[email protected]>	[3.10+]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Heiko Carstens 2014-01-27 17:07:19 -08:00 • committed by Linus Torvalds
commit 592f6b842f
1 changed files with 2 additions and 2 deletions
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4
fs/notify/fanotify/fanotify_user.c
View file

@ -886,9 +886,9 @@ 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);
}