diff options
| author | Vasily Gorbik <gor@linux.ibm.com> | 2017-11-17 16:52:22 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-10-09 11:21:21 +0200 |
| commit | 7fef92ccadd744492526d7749eebfe24dd8dcc48 (patch) | |
| tree | 1222e34e9258e2312d294020cff6ba2f749f228f /arch/s390/include | |
| parent | 42db5ed86090d8e57ca08bfd162a10be6320cc49 (diff) | |
s390/kasan: double the stack size
Kasan stack instrumentation pads stack variables with redzones, which
increases stack frames size significantly. Stack sizes are increased
from 16k to 32k in the code, as well as for the kernel stack overflow
detection option (CHECK_STACK).
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/include')
| -rw-r--r-- | arch/s390/include/asm/thread_info.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h index 1bbbaf6ae511..79b40600f523 100644 --- a/arch/s390/include/asm/thread_info.h +++ b/arch/s390/include/asm/thread_info.h @@ -13,7 +13,11 @@ /* * General size of kernel stacks */ +#ifdef CONFIG_KASAN +#define THREAD_SIZE_ORDER 3 +#else #define THREAD_SIZE_ORDER 2 +#endif #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) #ifndef __ASSEMBLY__ |