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 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
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-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From d9afaaa4ff7af8b87d4a205e48cb8a6f666d7f01 Mon Sep 17 00:00:00 2001
From: Geert Uytterhoeven geert@linux-m68k.org Date: Thu, 1 Feb 2018 11:21:59 +0100 Subject: compiler-gcc.h: __nostackprotector needs gcc-4.4 and up MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
From: Geert Uytterhoeven geert@linux-m68k.org
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@linux-m68k.org Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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@linux-m68k.org are
queue-4.15/compiler-gcc.h-__nostackprotector-needs-gcc-4.4-and-up.patch queue-4.15/compiler-gcc.h-introduce-__optimize-function-attribute.patch