summaryrefslogtreecommitdiffstats
path: root/scripts
diff options
context:
space:
mode:
authorAndrey Ryabinin <a.ryabinin@samsung.com>2015-02-13 23:39:59 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-14 06:21:41 +0100
commitc420f167db8c799d69fe43a801c58a7f02e9d57c (patch)
tree3dff6731a0459d554ae81d07b557721d6b72f773 /scripts
parentx86_64: kasan: add interceptors for memset/memmove/memcpy functions (diff)
downloadlinux-c420f167db8c799d69fe43a801c58a7f02e9d57c.tar.xz
linux-c420f167db8c799d69fe43a801c58a7f02e9d57c.zip
kasan: enable stack instrumentation
Stack instrumentation allows to detect out of bounds memory accesses for variables allocated on stack. Compiler adds redzones around every variable on stack and poisons redzones in function's prologue. Such approach significantly increases stack usage, so all in-kernel stacks size were doubled. 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>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Makefile.kasan1
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan
index 7acd6faa0335..2163b8cc446e 100644
--- a/scripts/Makefile.kasan
+++ b/scripts/Makefile.kasan
@@ -9,6 +9,7 @@ CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address
CFLAGS_KASAN := $(call cc-option, -fsanitize=kernel-address \
-fasan-shadow-offset=$(CONFIG_KASAN_SHADOW_OFFSET) \
+ --param asan-stack=1 \
--param asan-instrumentation-with-call-threshold=$(call_threshold))
ifeq ($(call cc-option, $(CFLAGS_KASAN_MINIMAL) -Werror),)