Messages in this thread Patch in this message |  | | From | Brian Gerst <> | | Subject | [PATCH v4 01/16] x86/stackprotector/32: Remove stack protector test script | | Date | Fri, 22 Mar 2024 12:52:18 -0400 |
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Test for compiler support directly in Kconfig.
Signed-off-by: Brian Gerst <brgerst@gmail.com> --- 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=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 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=81708 - -echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -m32 -O0 -fstack-protector -mstack-protector-guard-reg=fs -mstack-protector-guard-symbol=__stack_chk_guard - -o - 2> /dev/null | grep -q "%fs" -- 2.44.0
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