linux-kernel - [PATCH 2/4] x86: ia32entry.S: fix wrong symbolic constant usage: R11->ARGOFFSET

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Message-Id: <1420927210-19738-3-git-send-email-dvlasenk@redhat.com>
Date:	Sat, 10 Jan 2015 23:00:08 +0100
From:	Denys Vlasenko <dvlasenk@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Denys Vlasenko <dvlasenk@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
	Andy Lutomirski <luto@...capital.net>,
	Frederic Weisbecker <fweisbec@...il.com>,
	X86 ML <x86@...nel.org>, Alexei Starovoitov <ast@...mgrid.com>,
	Will Drewry <wad@...omium.org>,
	Kees Cook <keescook@...omium.org>
Subject: [PATCH 2/4] x86: ia32entry.S: fix wrong symbolic constant usage: R11->ARGOFFSET

The values of these two constants are the same, the meaning is different.

Signed-off-by: Denys Vlasenko <dvlasenk@...hat.com>
Acked-by: Borislav Petkov <bp@...e.de>
CC: Linus Torvalds <torvalds@...ux-foundation.org>
CC: Oleg Nesterov <oleg@...hat.com>
CC: "H. Peter Anvin" <hpa@...or.com>
CC: Borislav Petkov <bp@...en8.de>
CC: Andy Lutomirski <luto@...capital.net>
CC: Frederic Weisbecker <fweisbec@...il.com>
CC: X86 ML <x86@...nel.org>
CC: Alexei Starovoitov <ast@...mgrid.com>
CC: Will Drewry <wad@...omium.org>
CC: Kees Cook <keescook@...omium.org>
CC: linux-kernel@...r.kernel.org
---
 arch/x86/ia32/ia32entry.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 82e8a1d..156ebca 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -179,8 +179,8 @@ sysenter_dispatch:
 sysexit_from_sys_call:
 	andl    $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
 	/* clear IF, that popfq doesn't enable interrupts early */
-	andl  $~0x200,EFLAGS-R11(%rsp) 
-	movl	RIP-R11(%rsp),%edx		/* User %eip */
+	andl	$~0x200,EFLAGS-ARGOFFSET(%rsp)
+	movl	RIP-ARGOFFSET(%rsp),%edx		/* User %eip */
 	CFI_REGISTER rip,rdx
 	RESTORE_ARGS 0,24,0,0,0,0
 	xorq	%r8,%r8
-- 
1.8.1.4

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