You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

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
..
appldata	[S390] appldata: fix dev_get_stats 64 bit conversion	15 years ago
boot	[S390] Add support for LZO-compressed kernels.	15 years ago
crypto	crypto: des_s390 - Checkpatch cleanup	15 years ago
hypfs	switch hypfs to ->evict_inode()	15 years ago
include/asm	compat: Make compat_alloc_user_space() incorporate the access_ok()	15 years ago
kernel	[S390] fix tlb flushing vs. concurrent /proc accesses	15 years ago
kvm	KVM: Remove memory alias support	15 years ago
lib	[S390] uaccess: make sure copy_from_user_overflow is builtin	15 years ago
math-emu	tree-wide: fix assorted typos all over the place	15 years ago
mm	[S390] fix tlb flushing vs. concurrent /proc accesses	15 years ago
oprofile	…
Kconfig	time: Kill off CONFIG_GENERIC_TIME	15 years ago
Kconfig.debug	[S390] uaccess: implement strict user copy checks	15 years ago
Makefile	Merge commit 'v2.6.35' into kbuild/kbuild	15 years ago
defconfig	defconfig reduction	15 years ago