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| author | Alexandre Ghiti <alexandre.ghiti@canonical.com> | 2021-10-29 06:59:27 +0200 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2021-10-29 08:54:50 -0700 |
| commit | 54c5639d8f507ebefa814f574cb6f763033a72a5 (patch) | |
| tree | ac9ba5ba08a776edb2f16e7482d6fb35d1fe4e06 /arch/riscv/include/asm | |
| parent | cf11d01135ea1ff7fddb612033e3cb5cde279ff2 (diff) | |
| download | lwn-54c5639d8f507ebefa814f574cb6f763033a72a5.tar.gz lwn-54c5639d8f507ebefa814f574cb6f763033a72a5.zip | |
riscv: Fix asan-stack clang build
Nathan reported that because KASAN_SHADOW_OFFSET was not defined in
Kconfig, it prevents asan-stack from getting disabled with clang even
when CONFIG_KASAN_STACK is disabled: fix this by defining the
corresponding config.
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Fixes: 8ad8b72721d0 ("riscv: Add KASAN support")
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv/include/asm')
| -rw-r--r-- | arch/riscv/include/asm/kasan.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/riscv/include/asm/kasan.h b/arch/riscv/include/asm/kasan.h index a2b3d9cdbc86..b00f503ec124 100644 --- a/arch/riscv/include/asm/kasan.h +++ b/arch/riscv/include/asm/kasan.h @@ -30,8 +30,7 @@ #define KASAN_SHADOW_SIZE (UL(1) << ((CONFIG_VA_BITS - 1) - KASAN_SHADOW_SCALE_SHIFT)) #define KASAN_SHADOW_START KERN_VIRT_START #define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE) -#define KASAN_SHADOW_OFFSET (KASAN_SHADOW_END - (1ULL << \ - (64 - KASAN_SHADOW_SCALE_SHIFT))) +#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL) void kasan_init(void); asmlinkage void kasan_early_init(void); |