From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750820AbWEVNR1 (ORCPT ); Mon, 22 May 2006 09:17:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750817AbWEVNR1 (ORCPT ); Mon, 22 May 2006 09:17:27 -0400 Received: from public.id2-vpn.continvity.gns.novell.com ([195.33.99.129]:10271 "EHLO emea1-mh.id2.novell.com") by vger.kernel.org with ESMTP id S1750818AbWEVNR0 (ORCPT ); Mon, 22 May 2006 09:17:26 -0400 Message-Id: <4471D630.76E4.0078.0@novell.com> X-Mailer: Novell GroupWise Internet Agent 7.0.1 Beta Date: Mon, 22 May 2006 15:18:08 +0200 From: "Jan Beulich" To: "Andreas Kleen" Cc: "Ingo Molnar" , , Subject: [PATCH 4/6] reliable stack trace support (x86-64 syscall adjustment) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Adjust the CFA offset for 64- and 32-bit syscall entries so that the five slots pre-subtracted from the stack pointer do not appear to reside outside of the current frame. Signed-off-by: Jan Beulich Index: unwind-2.6.17-rc4/arch/x86_64/ia32/ia32entry.S =================================================================== --- unwind-2.6.17-rc4.orig/arch/x86_64/ia32/ia32entry.S 2006-05-22 15:00:34.000000000 +0200 +++ unwind-2.6.17-rc4/arch/x86_64/ia32/ia32entry.S 2006-05-22 15:01:10.000000000 +0200 @@ -178,7 +178,7 @@ sysenter_tracesys: */ ENTRY(ia32_cstar_target) CFI_STARTPROC32 simple - CFI_DEF_CFA rsp,0 + CFI_DEF_CFA rsp,PDA_STACKOFFSET CFI_REGISTER rip,rcx /*CFI_REGISTER rflags,r11*/ swapgs Index: unwind-2.6.17-rc4/arch/x86_64/kernel/entry.S =================================================================== --- unwind-2.6.17-rc4.orig/arch/x86_64/kernel/entry.S 2006-05-22 15:01:07.000000000 +0200 +++ unwind-2.6.17-rc4/arch/x86_64/kernel/entry.S 2006-05-22 15:01:10.000000000 +0200 @@ -188,7 +188,7 @@ rff_trace: ENTRY(system_call) CFI_STARTPROC simple - CFI_DEF_CFA rsp,0 + CFI_DEF_CFA rsp,PDA_STACKOFFSET CFI_REGISTER rip,rcx /*CFI_REGISTER rflags,r11*/ swapgs