H. Peter Anvin
c41d68a513
compat: Make compat_alloc_user_space() incorporate the access_ok()
...
compat_alloc_user_space() expects the caller to independently call
access_ok() to verify the returned area. A missing call could
introduce problems on some architectures.
This patch incorporates the access_ok() check into
compat_alloc_user_space() and also adds a sanity check on the length.
The existing compat_alloc_user_space() implementations are renamed
arch_compat_alloc_user_space() and are used as part of the
implementation of the new global function.
This patch assumes NULL will cause __get_user()/__put_user() to either
fail or access userspace on all architectures. This should be
followed by checking the return value of compat_access_user_space()
for NULL in the callers, at which time the access_ok() in the callers
can also be removed.
Reported-by: Ben Hawkes <hawkes@sota.gen.nz>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Tony Luck <tony.luck@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: James Bottomley <jejb@parisc-linux.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: <stable@kernel.org>
2010-09-14 16:08:45 -07:00
..
2010-02-27 12:53:30 +01:00
2010-08-05 13:26:04 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2009-09-17 20:07:42 +02:00
2010-07-05 17:17:26 +01:00
2010-08-05 13:26:09 +01:00
2010-08-05 13:26:31 +01:00
2010-07-05 17:17:26 +01:00
2010-08-05 13:26:27 +01:00
2009-07-03 15:45:29 +01:00
2010-02-27 12:53:00 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2010-08-11 08:59:21 -07:00
2008-10-15 12:46:51 +01:00
2010-08-11 08:59:21 -07:00
2008-10-15 12:46:51 +01:00
2010-08-11 08:59:21 -07:00
2009-06-17 11:06:24 +01:00
2010-08-05 13:26:18 +01:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:26:24 +01:00
2009-09-17 20:07:49 +02:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:26:00 +01:00
2010-02-27 12:53:14 +01:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:26:34 +01:00
2009-06-17 11:06:26 +01:00
2008-10-11 16:18:52 +01:00
2010-04-12 17:26:19 +01:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:25:38 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2009-12-17 01:57:06 +00:00
2010-08-05 13:26:31 +01:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:26:01 +01:00
2009-12-04 15:39:55 +01:00
2010-02-27 12:53:14 +01:00
2010-08-05 13:25:38 +01:00
2010-02-27 12:53:22 +01:00
2009-07-03 15:45:29 +01:00
2008-10-11 16:18:52 +01:00
2010-04-12 17:26:15 +01:00
2008-10-11 16:18:52 +01:00
2009-07-03 15:45:26 +01:00
2010-08-05 13:26:02 +01:00
2009-12-12 13:08:14 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-12-12 18:12:23 +00:00
2010-07-26 19:08:18 +01:00
2008-10-11 16:18:52 +01:00
2010-02-27 12:53:42 +01:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:26:02 +01:00
2009-06-11 21:02:14 +02:00
2010-08-05 13:26:12 +01:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:26:29 +01:00
2009-12-05 09:10:12 -08:00
2009-06-24 18:34:39 +01:00
2009-01-14 19:56:50 -08:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2009-11-26 09:16:19 +01:00
2010-08-05 13:26:06 +01:00
2008-10-15 12:46:49 +01:00
2009-05-14 13:50:28 +01:00
2009-12-17 01:57:20 +00:00
2008-10-11 16:18:52 +01:00
2010-04-30 20:52:41 +01:00
2008-10-11 16:18:52 +01:00
2010-09-14 16:08:45 -07:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:25:59 +01:00
2010-08-05 13:26:01 +01:00
2010-02-02 19:56:23 +01:00
2010-08-05 13:26:12 +01:00
2008-10-11 16:18:52 +01:00
2010-02-27 12:53:27 +01:00
2008-10-11 16:18:52 +01:00
2009-09-17 20:07:41 +02:00
2010-02-27 12:53:14 +01:00
2009-05-14 13:50:29 +01:00
2010-08-11 08:59:21 -07:00
2008-10-11 16:18:52 +01:00
2009-07-03 15:45:29 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:26:06 +01:00
2008-10-11 16:18:52 +01:00
2009-06-07 05:01:00 -07:00
2008-10-11 16:18:52 +01:00
2009-12-17 11:03:24 -05:00
2009-11-02 12:00:04 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2010-04-12 17:26:08 +01:00
2009-12-17 01:57:32 +00:00
2010-02-27 12:53:12 +01:00
2008-10-11 16:18:52 +01:00
2009-11-02 12:00:06 +01:00
2009-11-02 12:00:06 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2009-09-17 20:07:48 +02:00
2010-08-05 13:26:06 +01:00
2010-08-09 20:44:54 -07:00
2009-06-17 11:06:30 +01:00
2008-10-11 16:18:52 +01:00
2010-03-02 10:28:38 +01:00
2010-02-27 12:53:38 +01:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:26:28 +01:00
2010-02-27 12:53:12 +01:00
2009-06-17 11:06:28 +01:00
2010-08-10 13:47:39 -07:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2009-07-03 15:45:29 +01:00
2008-10-11 16:18:52 +01:00
2010-01-28 00:03:31 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2009-01-14 19:56:50 -08:00
2010-08-05 13:26:29 +01:00
2008-10-11 16:18:52 +01:00
2010-08-05 09:22:21 -05:00
2009-06-16 19:47:51 -07:00
2010-08-05 13:26:29 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2010-06-09 11:12:36 +02:00
2010-01-05 15:34:49 +09:00
2008-10-11 16:18:52 +01:00
2008-10-20 08:52:41 -07:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2010-08-05 13:26:22 +01:00
2009-12-01 16:21:25 +00:00
2010-04-12 17:26:14 +01:00
2010-04-12 17:26:14 +01:00
2008-10-11 16:18:52 +01:00
2009-01-11 09:57:22 +00:00
2010-02-27 12:53:14 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2010-02-27 12:53:14 +01:00
2008-10-11 16:18:52 +01:00
2010-04-12 17:26:13 +01:00
2010-02-27 12:53:04 +01:00
2010-02-27 12:53:27 +01:00
2010-08-05 13:26:27 +01:00
2008-10-11 16:18:52 +01:00
2010-02-27 12:53:03 +01:00
2010-02-27 12:53:26 +01:00
2010-04-30 20:52:41 +01:00
2010-02-27 12:53:26 +01:00
2010-03-01 09:15:15 -08:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2009-03-11 21:11:07 +01:00
2010-08-05 13:26:30 +01:00
2010-08-05 13:26:28 +01:00
2008-10-11 16:18:52 +01:00
2009-06-17 11:06:24 +01:00
2008-10-11 16:18:52 +01:00
2009-07-03 15:45:27 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2010-08-07 18:15:50 +02:00
2009-03-13 23:07:59 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2010-02-27 12:53:27 +01:00
2009-11-02 12:00:01 +01:00
2010-02-27 12:53:45 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2009-02-01 11:01:26 +05:30
2008-10-11 16:18:52 +01:00
2009-06-11 21:01:52 +02:00
2008-10-11 16:18:52 +01:00
2009-09-24 09:34:45 +09:30
2009-09-30 21:47:00 +02:00
2009-11-02 12:00:06 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2009-10-12 13:26:31 -07:00
2008-10-11 16:18:52 +01:00
2010-02-27 12:53:14 +01:00
2010-02-27 12:53:42 +01:00
2010-02-27 12:53:42 +01:00
2009-11-02 12:00:05 +01:00
2010-04-30 20:52:58 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2010-08-09 16:48:44 -04:00
2008-10-11 16:18:52 +01:00
2009-06-17 11:06:31 +01:00
2009-07-03 15:45:25 +01:00
2008-10-11 16:18:52 +01:00
2010-02-27 12:53:06 +01:00
2010-08-10 13:47:39 -07:00
2009-01-30 21:32:57 +00:00
2010-05-14 11:13:27 +02:00
2009-11-13 20:46:24 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2009-06-11 21:02:14 +02:00
2009-05-22 13:52:05 +01:00
2010-08-05 13:26:21 +01:00
2010-02-27 12:53:27 +01:00
2009-09-30 21:47:02 +02:00
2010-07-26 19:08:17 +01:00
2008-10-11 16:18:52 +01:00
2010-04-12 17:26:14 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:56 +01:00
2008-10-11 16:18:52 +01:00
2008-10-11 16:18:52 +01:00