From: Andi Kleen <ak@suse.de>
Date: Wed, 17 Oct 2007 16:04:33 +0000 (+0200)
Subject: x86: initialize 64bit registers for a.out executables
X-Git-Tag: v2.6.24-rc1~476^2~100
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f891dd18c107d582c3ab98da5209c930e16baf78;p=linux-2.6

x86: initialize 64bit registers for a.out executables

Previously the data from before the exec was kept in there. Zero
them instead.

[ tglx: arch/x86 adaptation ]

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
index 7cf1c29bf9..f82e1a94fc 100644
--- a/arch/x86/ia32/ia32_aout.c
+++ b/arch/x86/ia32/ia32_aout.c
@@ -420,6 +420,8 @@ beyond_if:
 	(regs)->eflags = 0x200;
 	(regs)->cs = __USER32_CS;
 	(regs)->ss = __USER32_DS;
+	regs->r8 = regs->r9 = regs->r10 = regs->r11 =
+	regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0;
 	set_fs(USER_DS);
 	if (unlikely(current->ptrace & PT_PTRACED)) {
 		if (current->ptrace & PT_TRACE_EXEC)