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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>		15 years ago
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alchemy	MIPS: Ritually kill stupid printk.	15 years ago
ar7	MIPS: AR7: rewrite of cpmac_get_mac()	15 years ago
bcm47xx	MIPS: BCM47xx: Fix nvram_getenv return value.	15 years ago
bcm63xx	MIPS: BCM63xx: Migrate to new platform makefile style.	15 years ago
boot	MIPS: strip the un-needed sections of vmlinuz	15 years ago
cavium-octeon	MIPS: Octeon: Allow more than 3.75GB of memory with PCIe	15 years ago
cobalt	MIPS: Move Cobalt Makefile parts to their own Platform file	15 years ago
configs	defconfig reduction	15 years ago
dec	MIPS: DECstation: Migrate to new platform makefile style.	15 years ago
emma	MIPS: Ritually kill stupid printk.	15 years ago
fw	…
include/asm	compat: Make compat_alloc_user_space() incorporate the access_ok()	15 years ago
jazz	MIPS: Jazz: Migrate to new platform makefile style.	15 years ago
jz4740	MIPS: JZ4740: Add qi_lb60 board support	15 years ago
kernel	Make do_execve() take a const filename pointer	15 years ago
lasat	MIPS: Lasat: Migrate to new platform makefile style.	15 years ago
lib	MIPS: libgcc.h: Checkpatch cleanup	15 years ago
loongson	MIPS: Loongson: Remove unused macro LOONGSON_PERFCNT_IRQ	15 years ago
math-emu	MIPS: Add -Werror to arch/mips/Kbuild	15 years ago
mipssim	MIPS: MIPSsim: Migrate to new Platform file	15 years ago
mm	dma-mapping: remove dma_is_consistent API	15 years ago
mti-malta	MIPS: Malta: Migrate to new platform makefile style.	15 years ago
nxp/pnx8550/common	MIPS: PNX8550: Move code one directory level up.	15 years ago
oprofile	MIPS: Oprofile: Fixup of loongson2_exit()	15 years ago
pci	MIPS: Octeon: Allow more than 3.75GB of memory with PCIe	15 years ago
pmc-sierra	MIPS: PNX Removing dead CONFIG_PMCTWILED	15 years ago
pnx833x	MIPS: Fix gen_nand probe structures contents	15 years ago
pnx8550	MIPS: PNX8550: Migrate to new platform makefile style.	15 years ago
power	MIPS: Loongson: Change the Email address of Wu Zhangjin	15 years ago
powertv	MIPS: PowerTV: Separate PowerTV USB support from non-USB code	15 years ago
rb532	MIPS: RB532: Migrate to new platform makefile style.	15 years ago
sgi-ip22	MIPS: IP22, IP28: Migrate to new platform makefile style.	15 years ago
sgi-ip27	MIPS: IP27: Migrate to new Platform file	15 years ago
sgi-ip32	MIPS: IP32: Migrate to new platform makefile style.	15 years ago
sibyte	MIPS: Sibyte: Migrate to new platform makefile style.	15 years ago
sni	MIPS: SNI: Migrate to new platform makefile style.	15 years ago
txx9	MIPS: TXx9: Migrate to new platform makefile style.	15 years ago
vr41xx	MIPS: Move VR41xx Makefile parts to their own Platform file	15 years ago
wrppmc	MIPS: WRPPMC: Migrate to new platform makefile style.	15 years ago
Kbuild	MIPS: Introduce support for Platform definitions	15 years ago
Kbuild.platforms	MIPS: JZ4740: Add Kbuild files	15 years ago
Kconfig	Merge branch 'timers-timekeeping-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	15 years ago
Kconfig.debug	MIPS: Crazy spinlock speed test.	15 years ago
Makefile	Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6	15 years ago