android_kernel_xiaomi_sm8350/arch/mips
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
..
alchemy MIPS: Ritually kill stupid printk. 2010-08-05 13:26:27 +01:00
ar7 MIPS: AR7: rewrite of cpmac_get_mac() 2010-08-05 13:26:02 +01:00
bcm47xx MIPS: BCM47xx: Fix nvram_getenv return value. 2010-08-05 13:26:31 +01:00
bcm63xx MIPS: BCM63xx: Migrate to new platform makefile style. 2010-08-05 13:25:54 +01:00
boot MIPS: strip the un-needed sections of vmlinuz 2010-08-05 13:26:34 +01:00
cavium-octeon MIPS: Octeon: Allow more than 3.75GB of memory with PCIe 2010-08-05 13:26:31 +01:00
cobalt MIPS: Move Cobalt Makefile parts to their own Platform file 2010-08-05 13:25:47 +01:00
configs defconfig reduction 2010-08-14 22:26:53 +02:00
dec MIPS: DECstation: Migrate to new platform makefile style. 2010-08-05 13:25:49 +01:00
emma MIPS: Ritually kill stupid printk. 2010-08-05 13:26:27 +01:00
fw
include/asm compat: Make compat_alloc_user_space() incorporate the access_ok() 2010-09-14 16:08:45 -07:00
jazz MIPS: Jazz: Migrate to new platform makefile style. 2010-08-05 13:25:48 +01:00
jz4740 MIPS: JZ4740: Add qi_lb60 board support 2010-08-05 13:26:20 +01:00
kernel Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
lasat MIPS: Lasat: Migrate to new platform makefile style. 2010-08-05 13:25:53 +01:00
lib
loongson MIPS: Loongson: Remove unused macro LOONGSON_PERFCNT_IRQ 2010-08-05 13:26:26 +01:00
math-emu MIPS: Add -Werror to arch/mips/Kbuild 2010-08-05 13:25:44 +01:00
mipssim MIPS: MIPSsim: Migrate to new Platform file 2010-08-05 13:25:45 +01:00
mm dma-mapping: remove dma_is_consistent API 2010-08-11 08:59:21 -07:00
mti-malta MIPS: Malta: Migrate to new platform makefile style. 2010-08-05 13:25:50 +01:00
nxp/pnx8550/common MIPS: PNX8550: Move code one directory level up. 2010-08-05 13:25:56 +01:00
oprofile MIPS: Oprofile: Fixup of loongson2_exit() 2010-07-05 17:17:31 +01:00
pci MIPS: Octeon: Allow more than 3.75GB of memory with PCIe 2010-08-05 13:26:31 +01:00
pmc-sierra MIPS: PNX Removing dead CONFIG_PMCTWILED 2010-08-05 13:26:00 +01:00
pnx833x MIPS: Fix gen_nand probe structures contents 2010-08-12 12:22:49 +01:00
pnx8550 MIPS: PNX8550: Migrate to new platform makefile style. 2010-08-05 13:25:57 +01:00
power
powertv MIPS: PowerTV: Separate PowerTV USB support from non-USB code 2010-08-05 13:26:34 +01:00
rb532 MIPS: RB532: Migrate to new platform makefile style. 2010-08-05 13:25:50 +01:00
sgi-ip22 MIPS: IP22, IP28: Migrate to new platform makefile style. 2010-08-05 13:25:49 +01:00
sgi-ip27 MIPS: IP27: Migrate to new Platform file 2010-08-05 13:25:47 +01:00
sgi-ip32 MIPS: IP32: Migrate to new platform makefile style. 2010-08-05 13:25:50 +01:00
sibyte MIPS: Sibyte: Migrate to new platform makefile style. 2010-08-05 13:25:55 +01:00
sni MIPS: SNI: Migrate to new platform makefile style. 2010-08-05 13:25:49 +01:00
txx9 MIPS: TXx9: Migrate to new platform makefile style. 2010-08-05 13:25:55 +01:00
vr41xx MIPS: Move VR41xx Makefile parts to their own Platform file 2010-08-05 13:25:48 +01:00
wrppmc MIPS: WRPPMC: Migrate to new platform makefile style. 2010-08-05 13:25:51 +01:00
Kbuild MIPS: Introduce support for Platform definitions 2010-08-05 13:25:45 +01:00
Kbuild.platforms MIPS: JZ4740: Add Kbuild files 2010-08-05 13:26:17 +01:00
Kconfig Merge branch 'timers-timekeeping-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-08-06 13:18:29 -07:00
Kconfig.debug
Makefile Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2010-08-05 14:10:07 -07:00