This is a note to let you know that I've just added the patch titled
tools/nolibc: x86_64: disable stack protector for _start
to the 6.4-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:
tools-nolibc-x86_64-disable-stack-protector-for-_start.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7a9b2345202a14dfec9081994486156f7a691513 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= <linux@xxxxxxxxxxxxxx>
Date: Sun, 21 May 2023 11:36:30 +0200
Subject: tools/nolibc: x86_64: disable stack protector for _start
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From: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
commit 7a9b2345202a14dfec9081994486156f7a691513 upstream.
This was forgotten in the original submission.
It is unknown why it worked for x86_64 on some compiler without this
attribute.
Reported-by: Willy Tarreau <w@xxxxxx>
Closes: https://lore.kernel.org/lkml/20230520133237.GA27501@xxxxxx/
Fixes: 0d8c461adbc4 ("tools/nolibc: x86_64: add stackprotector support")
Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
Signed-off-by: Willy Tarreau <w@xxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/include/nolibc/arch-x86_64.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/include/nolibc/arch-x86_64.h b/tools/include/nolibc/arch-x86_64.h
index d98f6c89d143..e201af15e142 100644
--- a/tools/include/nolibc/arch-x86_64.h
+++ b/tools/include/nolibc/arch-x86_64.h
@@ -190,7 +190,7 @@ const unsigned long *_auxv __attribute__((weak));
* 2) The deepest stack frame should be zero (the %rbp).
*
*/
-void __attribute__((weak,noreturn,optimize("omit-frame-pointer"))) _start(void)
+void __attribute__((weak,noreturn,optimize("omit-frame-pointer"),no_stack_protector)) _start(void)
{
__asm__ volatile (
#ifdef NOLIBC_STACKPROTECTOR
--
2.41.0
Patches currently in stable-queue which might be from linux@xxxxxxxxxxxxxx are
queue-6.4/tools-nolibc-x86_64-disable-stack-protector-for-_start.patch
