Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750746AbWAPNYD (ORCPT ); Mon, 16 Jan 2006 08:24:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750748AbWAPNYC (ORCPT ); Mon, 16 Jan 2006 08:24:02 -0500 Received: from ns.intellilink.co.jp ([61.115.5.249]:7108 "EHLO mail.intellilink.co.jp") by vger.kernel.org with ESMTP id S1750746AbWAPNYA (ORCPT ); Mon, 16 Jan 2006 08:24:00 -0500 Subject: [PATCH 2/5] stack overflow safe kdump (2.6.15-i386) - use_safe_smp_processor_id From: Fernando Luis Vazquez Cao To: "Eric W. Biederman" Cc: ak@suse.de, vgoyal@in.ibm.com, linux-kernel@vger.kernel.org, fastboot@lists.osdl.org Content-Type: text/plain Organization: =?UTF-8?Q?NTT=E3=83=87=E3=83=BC=E3=82=BF=E5=85=88=E7=AB=AF=E6=8A=80?= =?UTF-8?Q?=E8=A1=93=E6=A0=AA=E5=BC=8F=E4=BC=9A=E7=A4=BE?= Date: Mon, 16 Jan 2006 22:23:53 +0900 Message-Id: <1137417833.2256.86.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.4.2.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1157 Lines: 35 Substitute "smp_processor_id" with the stack overflow-safe "safe_smp_processor_id" in the reboot path to the second kernel. --- diff -urNp linux-2.6.15/arch/i386/kernel/crash.c linux-2.6.15-sov/arch/i386/kernel/crash.c --- linux-2.6.15/arch/i386/kernel/crash.c 2006-01-03 12:21:10.000000000 +0900 +++ linux-2.6.15-sov/arch/i386/kernel/crash.c 2006-01-16 20:28:31.000000000 +0900 @@ -120,7 +120,7 @@ static void crash_save_self(struct pt_re struct pt_regs regs; int cpu; - cpu = smp_processor_id(); + cpu = safe_smp_processor_id(); if (saved_regs) crash_setup_regs(®s, saved_regs); else @@ -211,7 +211,7 @@ void machine_crash_shutdown(struct pt_re local_irq_disable(); /* Make a note of crashing cpu. Will be used in NMI callback.*/ - crashing_cpu = smp_processor_id(); + crashing_cpu = safe_smp_processor_id(); nmi_shootdown_cpus(); lapic_shutdown(); #if defined(CONFIG_X86_IO_APIC) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/