Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423188AbWCUSeI (ORCPT ); Tue, 21 Mar 2006 13:34:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1423180AbWCUSeH (ORCPT ); Tue, 21 Mar 2006 13:34:07 -0500 Received: from smtp.osdl.org ([65.172.181.4]:39634 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1423174AbWCUSeE (ORCPT ); Tue, 21 Mar 2006 13:34:04 -0500 Date: Tue, 21 Mar 2006 10:33:53 -0800 (PST) From: Linus Torvalds To: Sander cc: Mark Lord , Mark Lord , Jeff Garzik , Andrew Morton , "linux-ide@vger.kernel.org" , Linux Kernel Subject: Re: [PATCH] 2.6.xx: sata_mv: another critical fix In-Reply-To: <20060321153708.GA11703@favonius> Message-ID: References: <441F4F95.4070203@garzik.org> <200603210000.36552.lkml@rtr.ca> <20060321121354.GB24977@favonius> <442004E4.7010002@rtr.ca> <20060321153708.GA11703@favonius> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 728 Lines: 20 On Tue, 21 Mar 2006, Sander wrote: > > The system just freezes. Rock solid. No sysrq, no ctrl-alt-del, nothing. Can you enable the NMI watchdog? It could be a PCI bus lockup (in which case nothing will help), but if it's some interrupts-off busy loop (whether due to a spinlock deadlock or due to the driver just spinning) then nmi-watchdog should help. Of course, that requires that you have support for local/io-APIC (ie if UP, please select CONFIG_X86_UP_.*APIC) Linus - 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/