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5391e536d stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y ... Browse Code »

When building a 64-bit 4.18-rc1 kernel with a 32-bit userland, I
noticed that stack protection was silently disabled. Adding -m64 in
gcc-x86_64-has-stack-protector.sh fixed that, similar to what has been
noticed in commit 2a61f4747eea ("stack-protector: test compiler
capability in Kconfig and drop AUTO mode") for
gcc-x86_32-has-stack-protector.sh.

Signed-off-by: Sven Joachim
Signed-off-by: Masahiro Yamada

Sven Joachim
2018-06-25 22:21:13 +0800

gcc-x86_64-has-stack-protector.sh 198 Bytes

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#!/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"