diff options
| author | Vasily Gorbik <gor@linux.ibm.com> | 2017-11-19 11:39:39 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-10-09 11:21:28 +0200 |
| commit | 5e785963298b7923e28817d20868882fbefc863c (patch) | |
| tree | 3f59908d6657df6b24bd4f7e3fa3c98ebb385214 /arch/s390 | |
| parent | f4f0d32bfb273537fcea9febc7081dac0252dcc0 (diff) | |
| download | lwn-5e785963298b7923e28817d20868882fbefc863c.tar.gz lwn-5e785963298b7923e28817d20868882fbefc863c.zip | |
s390/kasan: enable stack and global variables access checks
By defining KASAN_SHADOW_OFFSET in Kconfig stack and global variables
memory access check instrumentation is enabled. gcc version 4.9.2 or
newer is also required.
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 5 | ||||
| -rw-r--r-- | arch/s390/include/asm/kasan.h | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 95fff775ac7c..24586257c5cd 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -56,6 +56,11 @@ config PCI_QUIRKS config ARCH_SUPPORTS_UPROBES def_bool y +config KASAN_SHADOW_OFFSET + hex + depends on KASAN + default 0x30000000000 + config S390 def_bool y select ARCH_BINFMT_ELF_STATE diff --git a/arch/s390/include/asm/kasan.h b/arch/s390/include/asm/kasan.h index 7de6eceb562e..892f4585c663 100644 --- a/arch/s390/include/asm/kasan.h +++ b/arch/s390/include/asm/kasan.h @@ -9,7 +9,7 @@ #define KASAN_SHADOW_SCALE_SHIFT 3 #define KASAN_SHADOW_SIZE \ (_AC(1, UL) << (_REGION2_SHIFT - KASAN_SHADOW_SCALE_SHIFT)) -#define KASAN_SHADOW_OFFSET _AC(0x30000000000, UL) +#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL) #define KASAN_SHADOW_START KASAN_SHADOW_OFFSET #define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE) |