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Message-ID: <874li0vvii.fsf@turtle.gmx.de>
Date: Mon, 18 Jun 2018 19:45:25 +0200
From: Sven Joachim <svenjoac@....de>
To: Masahiro Yamada <yamada.masahiro@...ionext.com>,
linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH] stack-protector: Fix test with 32-bit userland and CONFIG_64BIT=y
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 <svenjoac@....de>
---
scripts/gcc-x86_64-has-stack-protector.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/gcc-x86_64-has-stack-protector.sh b/scripts/gcc-x86_64-has-stack-protector.sh
index 3755af0cd9f7..75e4e22b986a 100755
--- a/scripts/gcc-x86_64-has-stack-protector.sh
+++ b/scripts/gcc-x86_64-has-stack-protector.sh
@@ -1,4 +1,4 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
-echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fno-PIE -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
+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"
--
2.17.1
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