diff options
| author | Marco Elver <[email protected]> | 2024-10-21 14:00:10 +0200 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2024-10-23 16:04:30 +0100 |
| commit | 894b00a3350c560990638bdf89bdf1f3d5491950 (patch) | |
| tree | 67540d8ad3639ab5efb69432706edfe7026be5d8 | |
| parent | 7aed6a2c51ffc97a126e0ea0c270fab7af97ae18 (diff) | |
kasan: Fix Software Tag-Based KASAN with GCC
Per [1], -fsanitize=kernel-hwaddress with GCC currently does not disable
instrumentation in functions with __attribute__((no_sanitize_address)).
However, __attribute__((no_sanitize("hwaddress"))) does correctly
disable instrumentation. Use it instead.
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117196 [1]
Link: https://lore.kernel.org/r/[email protected]
Link: https://lore.kernel.org/r/ZvFGwKfoC4yVjN_X@J2N7QTR9R3
Link: https://bugzilla.kernel.org/show_bug.cgi?id=218854
Reported-by: [email protected]
Tested-by: Andrey Konovalov <[email protected]>
Cc: Andrew Pinski <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Marco Elver <[email protected]>
Reviewed-by: Andrey Konovalov <[email protected]>
Fixes: 7b861a53e46b ("kasan: Bump required compiler version")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
| -rw-r--r-- | include/linux/compiler-gcc.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index f805adaa316e..cd6f9aae311f 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -80,7 +80,11 @@ #define __noscs __attribute__((__no_sanitize__("shadow-call-stack"))) #endif +#ifdef __SANITIZE_HWADDRESS__ +#define __no_sanitize_address __attribute__((__no_sanitize__("hwaddress"))) +#else #define __no_sanitize_address __attribute__((__no_sanitize_address__)) +#endif #if defined(__SANITIZE_THREAD__) #define __no_sanitize_thread __attribute__((__no_sanitize_thread__)) |