tree 21944562e0935f46f45c30986ddbe005c63feaca
parent 5b716ac728bcc01b1f2a7ed6e437196602237c27
author Mikulas Patocka <mpatocka@redhat.com> 1346517247 -0400
committer Linus Torvalds <torvalds@linux-foundation.org> 1346895253 -0700

Fix order of arguments to compat_put_time[spec|val]

Commit 644595f89620 ("compat: Handle COMPAT_USE_64BIT_TIME in
net/socket.c") introduced a bug where the helper functions to take
either a 64-bit or compat time[spec|val] got the arguments in the wrong
order, passing the kernel stack pointer off as a user pointer (and vice
versa).

Because of the user address range check, that in turn then causes an
EFAULT due to the user pointer range checking failing for the kernel
address.  Incorrectly resuling in a failed system call for 32-bit
processes with a 64-bit kernel.

On odder architectures like HP-PA (with separate user/kernel address
spaces), it can be used read kernel memory.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>