Messages in this thread Patch in this message |  | | From | Brian Gerst <> | | Subject | [PATCH v4 02/16] x86/stackprotector/64: Remove stack protector test script | | Date | Fri, 22 Mar 2024 12:52:19 -0400 |
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This test for the stack protector was added in 2006 to make sure the compiler had the PR28281 patch applied. With GCC 5.1 being the minimum supported compiler now, it is no longer necessary.
Signed-off-by: Brian Gerst <brgerst@gmail.com> --- arch/x86/Kconfig | 5 ++--- scripts/gcc-x86_64-has-stack-protector.sh | 4 ---- 2 files changed, 2 insertions(+), 7 deletions(-) delete mode 100755 scripts/gcc-x86_64-has-stack-protector.sh
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index f326903cbe67..88d72227e3cb 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -411,12 +411,11 @@ 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 y if 64BIT default $(cc-option,-mstack-protector-guard-reg=fs -mstack-protector-guard-symbol=__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 - the segment on 32-bit kernels. + the compiler does not allow control of the segment and symbol. menu "Processor type and features" diff --git a/scripts/gcc-x86_64-has-stack-protector.sh b/scripts/gcc-x86_64-has-stack-protector.sh deleted file mode 100755 index 75e4e22b986a..000000000000 --- a/scripts/gcc-x86_64-has-stack-protector.sh +++ /dev/null @@ -1,4 +0,0 @@ -#!/bin/sh -# SPDX-License-Identifier: GPL-2.0 - -echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -m64 -O0 -mcmodel=kernel -fno-PIE -fstack-protector - -o - 2> /dev/null | grep -q "%gs" -- 2.44.0
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