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| author | Samuel Holland <samuel.holland@sifive.com> | 2024-07-31 20:36:59 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-09-19 01:10:00 -0700 |
| commit | 58ff537109ac863d4ec83baf8413b17dcc10101c (patch) | |
| tree | 9bd118c81ca4582e270c84a880b298c195e35b1e /arch/riscv/include/asm | |
| parent | 8400291e289ee6b2bf9779ff1c83a291501f017b (diff) | |
| download | linux-58ff537109ac863d4ec83baf8413b17dcc10101c.tar.gz linux-58ff537109ac863d4ec83baf8413b17dcc10101c.tar.bz2 linux-58ff537109ac863d4ec83baf8413b17dcc10101c.zip | |
riscv: Omit optimized string routines when using KASAN
The optimized string routines are implemented in assembly, so they are
not instrumented for use with KASAN. Fall back to the C version of the
routines in order to improve KASAN coverage. This fixes the
kasan_strings() unit test.
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240801033725.28816-2-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include/asm')
| -rw-r--r-- | arch/riscv/include/asm/string.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/string.h b/arch/riscv/include/asm/string.h index a96b1fea24fe..5ba77f60bf0b 100644 --- a/arch/riscv/include/asm/string.h +++ b/arch/riscv/include/asm/string.h @@ -19,6 +19,7 @@ extern asmlinkage void *__memcpy(void *, const void *, size_t); extern asmlinkage void *memmove(void *, const void *, size_t); extern asmlinkage void *__memmove(void *, const void *, size_t); +#if !(defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) #define __HAVE_ARCH_STRCMP extern asmlinkage int strcmp(const char *cs, const char *ct); @@ -27,6 +28,7 @@ extern asmlinkage __kernel_size_t strlen(const char *); #define __HAVE_ARCH_STRNCMP extern asmlinkage int strncmp(const char *cs, const char *ct, size_t count); +#endif /* For those files which don't want to check by kasan. */ #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) |