linux-kernel - [PATCH V2 31/41] x86/nmi: Remove stack protector from nmi.c

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Date:   Sun, 26 Sep 2021 23:08:28 +0800
From:   Lai Jiangshan <jiangshanlai@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Lai Jiangshan <laijs@...ux.alibaba.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Joerg Roedel <jroedel@...e.de>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Brijesh Singh <brijesh.singh@....com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Arvind Sankar <nivedita@...m.mit.edu>,
        Juergen Gross <jgross@...e.com>, Chester Lin <clin@...e.com>
Subject: [PATCH V2 31/41] x86/nmi: Remove stack protector from nmi.c

From: Lai Jiangshan <laijs@...ux.alibaba.com>

nmi.c is going to contain __entry_code which can not be instrumented
by stack protector.

Signed-off-by: Lai Jiangshan <laijs@...ux.alibaba.com>
---
 arch/x86/kernel/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 0e054e2304c6..f56e8088c85d 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -50,6 +50,8 @@ CFLAGS_head$(BITS).o	+= -fno-stack-protector
 
 CFLAGS_REMOVE_traps.o		= -fstack-protector -fstack-protector-strong
 CFLAGS_traps.o			+= -fno-stack-protector
+CFLAGS_REMOVE_nmi.o		= -fstack-protector -fstack-protector-strong
+CFLAGS_nmi.o			+= -fno-stack-protector
 
 CFLAGS_irq.o := -I $(srctree)/$(src)/../include/asm/trace
 
-- 
2.19.1.6.gb485710b