linux-hardening - [PATCH] ubsan: remove cc-option test for UBSAN

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Message-ID: <20230407215406.768464-1-ndesaulniers@google.com>
Date:   Fri,  7 Apr 2023 14:54:06 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Kees Cook <keescook@...omium.org>,
        Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-hardening@...r.kernel.org,
        Nathan Chancellor <nathan@...nel.org>,
        Tom Rix <trix@...hat.com>,
        Josh Poimboeuf <jpoimboe@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Miroslav Benes <mbenes@...e.cz>, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev, linux-kbuild@...r.kernel.org,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: [PATCH] ubsan: remove cc-option test for UBSAN_TRAP

-fsanitize-undefined-trap-on-error has been supported since GCC 5.1 and
Clang 3.2.  The minimum supported version of these according to
Documentation/process/changes.rst is 5.1 and 11.0.0 respectively. Drop
this cc-option check.

Signed-off-by: Nick Desaulniers <ndesaulniers@...gle.com>
---
Masahiro, Kees: get_maintainer.pl leaves much to be desired for this
file. Can one of you please pick this up?

 lib/Kconfig.ubsan | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan
index fd15230a703b..0e7ad0782399 100644
--- a/lib/Kconfig.ubsan
+++ b/lib/Kconfig.ubsan
@@ -15,7 +15,6 @@ if UBSAN
 config UBSAN_TRAP
 	bool "On Sanitizer warnings, abort the running kernel code"
 	depends on !COMPILE_TEST
-	depends on $(cc-option, -fsanitize-undefined-trap-on-error)
 	help
 	  Building kernels with Sanitizer features enabled tends to grow
 	  the kernel size by around 5%, due to adding all the debugging
-- 
2.40.0.577.gac1e443424-goog