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| author |   Dmitry Vyukov <dvyukov@google.com> | 2022-03-14 10:06:52 +0100 |
|---|---|---|
| committer |   Palmer Dabbelt <palmer@rivosinc.com> | 2022-03-30 23:01:43 -0700 |
| commit | b81d591386c3a50b96dddcf663628ea0df0bf2b3 (patch) | |
| tree | 54e4162a61f6db7efd828fbfeb600753ab168202 /arch/riscv/include/asm/thread_info.h | |
| parent | riscv: Fix fill_callchain return value (diff) | |
| download | linux-dev-b81d591386c3a50b96dddcf663628ea0df0bf2b3.tar.xz linux-dev-b81d591386c3a50b96dddcf663628ea0df0bf2b3.zip | |
riscv: Increase stack size under KASAN
KASAN requires more stack space because of compiler instrumentation.
Increase stack size as other arches do.
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: syzbot+0600986d88e2d4d7ebb8@syzkaller.appspotmail.com
Fixes: 8ad8b72721d0 ("riscv: Add KASAN support")
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include/asm/thread_info.h')
| -rw-r--r-- | arch/riscv/include/asm/thread_info.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h index 60da0dcacf14..74d888c8d631 100644 --- a/arch/riscv/include/asm/thread_info.h +++ b/arch/riscv/include/asm/thread_info.h @@ -11,11 +11,17 @@ #include <asm/page.h> #include <linux/const.h> +#ifdef CONFIG_KASAN +#define KASAN_STACK_ORDER 1 +#else +#define KASAN_STACK_ORDER 0 +#endif + /* thread information allocation */ #ifdef CONFIG_64BIT -#define THREAD_SIZE_ORDER (2) +#define THREAD_SIZE_ORDER (2 + KASAN_STACK_ORDER) #else -#define THREAD_SIZE_ORDER (1) +#define THREAD_SIZE_ORDER (1 + KASAN_STACK_ORDER) #endif #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) |