ubsan: Disable signed integer overflow sanitizer on GCC < 8
Subsystems (2)
PATCH 1/1 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.
---
Cc: Marco Elver <[email protected]>
Cc: Andrey Konovalov <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: [email protected]
Cc: [email protected]
--- lib/Kconfig.ubsan | 2 ++ 1 file changed, 2 insertions(+)
lib/Kconfig.ubsan +2 -0
@@ -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
Signature · 1 line
2.34.1
Quoted 9 lines · Kees Cook
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 <[email protected]>Signed-off-by Kees Cook <[email protected]>
Looks reasonable:
Thanks,
-- Marco
Quoted 30 lines
---
Cc: Marco Elver <[email protected]>
Cc: Andrey Konovalov <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: [email protected]
Cc: [email protected]--- lib/Kconfig.ubsan | 2 ++ 1 file changed, 2 insertions(+)lib/Kconfig.ubsan +2
-1@@ -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 --2.34.1
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