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[2600:6c4a:4d3f:6d5c::1019]) by smtp.gmail.com with ESMTPSA id j1-20020a37ef01000000b00789e9bbf962sm894901qkk.133.2024.03.22.09.52.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Mar 2024 09:52:45 -0700 (PDT) From: Brian Gerst To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Ingo Molnar , Thomas Gleixner , Borislav Petkov , "H . Peter Anvin" , Uros Bizjak , David.Laight@aculab.com, Brian Gerst Subject: [PATCH v4 01/16] x86/stackprotector/32: Remove stack protector test script Date: Fri, 22 Mar 2024 12:52:18 -0400 Message-ID: <20240322165233.71698-2-brgerst@gmail.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240322165233.71698-1-brgerst@gmail.com> References: <20240322165233.71698-1-brgerst@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Test for compiler support directly in Kconfig. Signed-off-by: Brian Gerst Reviewed-by: Uros Bizjak --- arch/x86/Kconfig | 2 +- scripts/gcc-x86_32-has-stack-protector.sh | 8 -------- 2 files changed, 1 insertion(+), 9 deletions(-) delete mode 100755 scripts/gcc-x86_32-has-stack-protector.sh diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 03483b23a009..f326903cbe67 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -412,7 +412,7 @@ config PGTABLE_LEVELS config CC_HAS_SANE_STACKPROTECTOR bool default $(success,$(srctree)/scripts/gcc-x86_64-has-stack-protector.sh $(= CC) $(CLANG_FLAGS)) if 64BIT - default $(success,$(srctree)/scripts/gcc-x86_32-has-stack-protector.sh $(= CC) $(CLANG_FLAGS)) + default $(cc-option,-mstack-protector-guard-reg=3Dfs -mstack-protector-gu= ard-symbol=3D__stack_chk_guard) help We have to make sure stack protector is unconditionally disabled if the compiler produces broken code or if it does not let us control diff --git a/scripts/gcc-x86_32-has-stack-protector.sh b/scripts/gcc-x86_32= -has-stack-protector.sh deleted file mode 100755 index 825c75c5b715..000000000000 --- a/scripts/gcc-x86_32-has-stack-protector.sh +++ /dev/null @@ -1,8 +0,0 @@ -#!/bin/sh -# SPDX-License-Identifier: GPL-2.0 - -# This requires GCC 8.1 or better. Specifically, we require -# -mstack-protector-guard-reg, added by -# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D81708 - -echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -m32 -O0 -= fstack-protector -mstack-protector-guard-reg=3Dfs -mstack-protector-guard-s= ymbol=3D__stack_chk_guard - -o - 2> /dev/null | grep -q "%fs" --=20 2.44.0