linux/include
Andrey Ryabinin bebf56a1b1 kasan: enable instrumentation of global variables
This feature let us to detect accesses out of bounds of global variables.
This will work as for globals in kernel image, so for globals in modules.
Currently this won't work for symbols in user-specified sections (e.g.
__init, __read_mostly, ...)

The idea of this is simple.  Compiler increases each global variable by
redzone size and add constructors invoking __asan_register_globals()
function.  Information about global variable (address, size, size with
redzone ...) passed to __asan_register_globals() so we could poison
variable's redzone.

This patch also forces module_alloc() to return 8*PAGE_SIZE aligned
address making shadow memory handling (
kasan_module_alloc()/kasan_module_free() ) more simple.  Such alignment
guarantees that each shadow page backing modules address space correspond
to only one module_alloc() allocation.

Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Konstantin Serebryany <kcc@google.com>
Cc: Dmitry Chernenkov <dmitryc@google.com>
Signed-off-by: Andrey Konovalov <adech.fo@gmail.com>
Cc: Yuri Gribov <tetra2005@gmail.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-13 21:21:42 -08:00
..
acpi kernel.h: remove ancient __FUNCTION__ hack 2015-02-12 18:54:13 -08:00
asm-generic kernel: add support for .init_array.* constructors 2015-02-13 21:21:42 -08:00
clocksource
crypto crypto: switch af_alg_make_sg() to iov_iter 2015-02-04 01:34:15 -05:00
drm drm/i915: remove unused power_well/get_cdclk_freq api 2015-01-12 02:48:24 +01:00
dt-bindings This is the bulk of pin control changes for the v3.20 cycle: 2015-02-11 11:23:13 -08:00
keys
kvm arm/arm64: KVM: allow userland to request a virtual GICv3 2015-01-20 18:25:33 +01:00
linux kasan: enable instrumentation of global variables 2015-02-13 21:21:42 -08:00
math-emu
media [media] tea575x: split and export functions 2015-01-27 10:13:50 -02:00
memory
misc
net memcg: cleanup static keys decrement 2015-02-12 18:54:10 -08:00
pcmcia
ras
rdma Revert "IB/core: Add support for extended query device caps" 2015-02-06 00:54:33 -08:00
rxrpc
scsi Merge branch 'for-3.20/core' of git://git.kernel.dk/linux-block 2015-02-12 14:13:23 -08:00
soc
sound ALSA: pcm: allow for trigger_tstamp snapshot in .trigger 2015-02-09 16:01:53 +01:00
target target: Drop left-over fabric_max_sectors attribute 2015-01-09 15:22:05 -08:00
trace Fairly small update, but there are some interesting new features. 2015-02-13 09:55:09 -08:00
uapi Fairly small update, but there are some interesting new features. 2015-02-13 09:55:09 -08:00
video OMAPDSS: add define for DRA7xx HW version 2015-02-04 12:32:04 +02:00
xen Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2015-02-10 20:01:30 -08:00
Kbuild