linux-kernel - [PATCH 2.6.19-rc2-mm1] Fix fake return address

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Message-ID: <45358FB2.5000606@goop.org>
Date:	Tue, 17 Oct 2006 19:21:38 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Andi Kleen <ak@....de>, Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH 2.6.19-rc2-mm1] Fix fake return address

The fake return address was being set to __KERNEL_PDA, rather than 0.
Push it earlier while %eax still equals 0.

Signed-off-by: Jeremy Fitzhardinge <jeremy@...source.com>
Cc: Andi Kleen <ak@....de>
Cc: Andrew Morton <akpm@...l.org>

diff -r b8e58159855c arch/i386/kernel/head.S
--- a/arch/i386/kernel/head.S	Tue Oct 17 19:04:59 2006 -0700
+++ b/arch/i386/kernel/head.S	Tue Oct 17 19:05:46 2006 -0700
@@ -316,12 +316,12 @@ 1:	movl $(__KERNEL_DS),%eax	# reload all
 	xorl %eax,%eax			# Clear FS and LDT
 	movl %eax,%fs
 	lldt %ax
+	pushl %eax		# fake return address
 
 	movl $(__KERNEL_PDA),%eax
 	mov  %eax,%gs
 
 	cld			# gcc2 wants the direction flag cleared at all times
-	pushl %eax		# fake return address
 #ifdef CONFIG_SMP
 	movb ready, %cl
 	movb $1, ready



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