This is a note to let you know that I've just added the patch titled
compiler-gcc.h: __nostackprotector needs gcc-4.4 and up
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
compiler-gcc.h-__nostackprotector-needs-gcc-4.4-and-up.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d9afaaa4ff7af8b87d4a205e48cb8a6f666d7f01 Mon Sep 17 00:00:00 2001
From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Date: Thu, 1 Feb 2018 11:21:59 +0100
Subject: compiler-gcc.h: __nostackprotector needs gcc-4.4 and up
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From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
commit d9afaaa4ff7af8b87d4a205e48cb8a6f666d7f01 upstream.
Gcc versions before 4.4 do not recognize the __optimize__ compiler
attribute:
warning: ‘__optimize__’ attribute directive ignored
Fixes: 7375ae3a0b79ea07 ("compiler-gcc.h: Introduce __nostackprotector function attribute")
Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/compiler-gcc.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -167,8 +167,6 @@
#if GCC_VERSION >= 40100
# define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
-
-#define __nostackprotector __attribute__((__optimize__("no-stack-protector")))
#endif
#if GCC_VERSION >= 40300
@@ -198,6 +196,7 @@
#if GCC_VERSION >= 40400
#define __optimize(level) __attribute__((__optimize__(level)))
+#define __nostackprotector __optimize("no-stack-protector")
#endif /* GCC_VERSION >= 40400 */
#if GCC_VERSION >= 40500
Patches currently in stable-queue which might be from geert@xxxxxxxxxxxxxx are
queue-4.14/compiler-gcc.h-__nostackprotector-needs-gcc-4.4-and-up.patch
queue-4.14/compiler-gcc.h-introduce-__optimize-function-attribute.patch