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| author | Kees Cook <kees@kernel.org> | 2025-05-03 11:46:20 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2025-05-08 09:42:06 -0700 |
| commit | 11bb1678e249e51cd748e8f91e5241b3ce71da3a (patch) | |
| tree | e537068b8ea9df65fe6ca1f7c85af1c7cdada40a /scripts/Makefile.ubsan | |
| parent | randstruct: Force full rebuild when seed changes (diff) | |
| download | linux-11bb1678e249e51cd748e8f91e5241b3ce71da3a.tar.gz linux-11bb1678e249e51cd748e8f91e5241b3ce71da3a.zip | |
integer-wrap: Force full rebuild when .scl file changes
Since the integer wrapping sanitizer's behavior depends on its associated
.scl file, we must force a full rebuild if the file changes. If not,
instrumentation may differ between targets based on when they were built.
Generate a new header file, integer-wrap.h, any time the Clang .scl
file changes. Include the header file in compiler-version.h when its
associated feature name, INTEGER_WRAP, is defined. This will be picked
up by fixdep and force rebuilds where needed.
Acked-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20250503184623.2572355-3-kees@kernel.org
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Kees Cook <kees@kernel.org>
Diffstat (limited to 'scripts/Makefile.ubsan')
| -rw-r--r-- | scripts/Makefile.ubsan | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan index 9e35198edbf0..653f7117819c 100644 --- a/scripts/Makefile.ubsan +++ b/scripts/Makefile.ubsan @@ -15,6 +15,7 @@ ubsan-cflags-$(CONFIG_UBSAN_TRAP) += $(call cc-option,-fsanitize-trap=undefined export CFLAGS_UBSAN := $(ubsan-cflags-y) ubsan-integer-wrap-cflags-$(CONFIG_UBSAN_INTEGER_WRAP) += \ + -DINTEGER_WRAP \ -fsanitize-undefined-ignore-overflow-pattern=all \ -fsanitize=signed-integer-overflow \ -fsanitize=unsigned-integer-overflow \ |