Commit 0ee2689b authored by Brian Gerst's avatar Brian Gerst Committed by Ingo Molnar
Browse files

x86/stackprotector: Remove stack protector test scripts 



With GCC 8.1 now the minimum supported compiler for x86, these scripts
are no longer needed.

Signed-off-by: default avatarBrian Gerst <brgerst@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Reviewed-by: default avatarArd Biesheuvel <ardb@kernel.org>
Reviewed-by: default avatarUros Bizjak <ubizjak@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250123190747.745588-3-brgerst@gmail.com
parent a3e8fe81

arch/x86/Kconfig

+1 −10
Original line number Diff line number Diff line
@@ -285,7 +285,7 @@ config X86 
	select HAVE_FUNCTION_ARG_ACCESS_API

	select HAVE_SETUP_PER_CPU_AREA

	select HAVE_SOFTIRQ_ON_OWN_STACK

	select HAVE_STACKPROTECTOR		if CC_HAS_SANE_STACKPROTECTOR

	select HAVE_STACKPROTECTOR

	select HAVE_STACK_VALIDATION		if HAVE_OBJTOOL

	select HAVE_STATIC_CALL

	select HAVE_STATIC_CALL_INLINE		if HAVE_OBJTOOL
@@ -426,15 +426,6 @@ config PGTABLE_LEVELS 
	default 3 if X86_PAE

	default 2



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))

	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.



menu "Processor type and features"



config SMP

scripts/gcc-x86_32-has-stack-protector.sh

deleted100755 → 0
+0 −8
Original line number Diff line number Diff line 
#!/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 -m32 -O0 -fstack-protector -mstack-protector-guard-reg=fs -mstack-protector-guard-symbol=__stack_chk_guard - -o - 2> /dev/null | grep -q "%fs"

scripts/gcc-x86_64-has-stack-protector.sh

deleted100755 → 0
+0 −4
Original line number Diff line number Diff line 
#!/bin/sh

# SPDX-License-Identifier: GPL-2.0



echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -m64 -O0 -mcmodel=kernel -fno-PIE -fstack-protector - -o - 2> /dev/null | grep -q "%gs"