diff options
| author | Jisheng Zhang <jszhang@kernel.org> | 2021-08-05 00:30:59 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2021-08-24 20:59:10 -0700 |
| commit | 8341dcfbd8dda98a3b2836a421016f7d88e35b1c (patch) | |
| tree | d97cb10a817f411d3da33f0d54b80a253ef04602 /arch/riscv | |
| parent | 7f85b04b08ca264923358e2c4e93422bad59a6e0 (diff) | |
riscv: Enable Undefined Behavior Sanitizer UBSAN
Select ARCH_HAS_UBSAN_SANITIZE_ALL in order to allow the user to
enable CONFIG_UBSAN_SANITIZE_ALL and instrument the entire kernel for
ubsan checks.
VDSO is excluded because its build doesn't include the
__ubsan_handle_*() functions from lib/ubsan.c, and the VDSO has no
sane way to report errors even if it has definitions of these functions.
Passed lib/test_ubsan.c test.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/Kconfig | 1 | ||||
| -rw-r--r-- | arch/riscv/kernel/vdso/Makefile | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index a0caf1d4211c..e26e255dce3c 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -28,6 +28,7 @@ config RISCV select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL select ARCH_HAS_STRICT_MODULE_RWX if MMU && !XIP_KERNEL select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST + select ARCH_HAS_UBSAN_SANITIZE_ALL select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT select ARCH_STACKWALK diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile index 24d936c147cd..30a5335bd317 100644 --- a/arch/riscv/kernel/vdso/Makefile +++ b/arch/riscv/kernel/vdso/Makefile @@ -36,6 +36,7 @@ CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os GCOV_PROFILE := n KCOV_INSTRUMENT := n KASAN_SANITIZE := n +UBSAN_SANITIZE := n # Force dependency $(obj)/vdso.o: $(obj)/vdso.so |