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| author | Kees Cook <keescook@chromium.org> | 2024-03-12 20:45:52 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2024-03-18 11:24:14 -0700 |
| commit | 77fcc34769c8a0a228af32c52ba7d3ef64690c0d (patch) | |
| tree | c479f0468a890bc06a7a8460b3884f90a9da6ddc | |
| parent | 0a7b0acecea273c8816f4f5b0e189989470404cf (diff) | |
| download | linux-stable-77fcc34769c8a0a228af32c52ba7d3ef64690c0d.tar.gz linux-stable-77fcc34769c8a0a228af32c52ba7d3ef64690c0d.tar.bz2 linux-stable-77fcc34769c8a0a228af32c52ba7d3ef64690c0d.zip | |
ubsan: Disable signed integer overflow sanitizer on GCC < 8
For opting functions out of sanitizer coverage, the "no_sanitize"
attribute is used, but in GCC this wasn't introduced until GCC 8.
Disable the sanitizer unless we're not using GCC, or it is GCC
version 8 or higher.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202403110643.27JXEVCI-lkp@intel.com/
Reviewed-by: Marco Elver <elver@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
| -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 48a67058f84e..e81e1ac4a919 100644 --- a/lib/Kconfig.ubsan +++ b/lib/Kconfig.ubsan @@ -119,6 +119,8 @@ config UBSAN_SIGNED_WRAP bool "Perform checking for signed arithmetic wrap-around" default UBSAN depends on !COMPILE_TEST + # The no_sanitize attribute was introduced in GCC with version 8. + depends on !CC_IS_GCC || GCC_VERSION >= 80000 depends on $(cc-option,-fsanitize=signed-integer-overflow) help This option enables -fsanitize=signed-integer-overflow which checks |