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| author |   Kees Cook <kees@kernel.org> | 2025-05-28 11:26:22 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2025-05-28 16:02:11 -0700 |
| commit | d6a0e0bfecccdcecb08defe75a137c7262352102 (patch) | |
| tree | c30db8d1deaf14b670954c65962baa7c76fbeb9f /lib | |
| parent | wifi: iwlwifi: mld: Work around Clang loop unrolling bug (diff) | |
| download | linux-rng-d6a0e0bfecccdcecb08defe75a137c7262352102.tar.xz linux-rng-d6a0e0bfecccdcecb08defe75a137c7262352102.zip | |
ubsan: integer-overflow: depend on BROKEN to keep this out of CI
Depending on !COMPILE_TEST isn't sufficient to keep this feature out of
CI because we can't stop it from being included in randconfig builds.
This feature is still highly experimental, and is developed in lock-step
with Clang's Overflow Behavior Types[1]. Depend on BROKEN to keep it
from being enabled by anyone not expecting it.
Link: https://discourse.llvm.org/t/rfc-v2-clang-introduce-overflowbehaviortypes-for-wrapping-and-non-wrapping-arithmetic/86507 [1]
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202505281024.f42beaa7-lkp@intel.com
Fixes: 557f8c582a9b ("ubsan: Reintroduce signed overflow sanitizer")
Acked-by: Eric Biggers <ebiggers@kernel.org>
Link: https://lore.kernel.org/r/20250528182616.work.296-kees@kernel.org
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Marco Elver <elver@google.com>
Signed-off-by: Kees Cook <kees@kernel.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.ubsan | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan index f6ea0c5b5da3..96cd89668467 100644 --- a/lib/Kconfig.ubsan +++ b/lib/Kconfig.ubsan @@ -118,6 +118,8 @@ config UBSAN_UNREACHABLE config UBSAN_INTEGER_WRAP bool "Perform checking for integer arithmetic wrap-around" + # This is very experimental so drop the next line if you really want it + depends on BROKEN depends on !COMPILE_TEST depends on $(cc-option,-fsanitize-undefined-ignore-overflow-pattern=all) depends on $(cc-option,-fsanitize=signed-integer-overflow) |