Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753872AbYHJR3d (ORCPT ); Sun, 10 Aug 2008 13:29:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752304AbYHJR30 (ORCPT ); Sun, 10 Aug 2008 13:29:26 -0400 Received: from sovereign.computergmbh.de ([85.214.69.204]:57620 "EHLO sovereign.computergmbh.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751967AbYHJR3Z (ORCPT ); Sun, 10 Aug 2008 13:29:25 -0400 Date: Sun, 10 Aug 2008 13:29:24 -0400 (EDT) From: Jan Engelhardt To: Tetsuo Handa cc: linux-kernel@vger.kernel.org Subject: Re: Does sysrq break something? In-Reply-To: <200805122116.HIJ51599.VLOFOQFMSFtHJO@I-love.SAKURA.ne.jp> Message-ID: References: <200805122116.HIJ51599.VLOFOQFMSFtHJO@I-love.SAKURA.ne.jp> User-Agent: Alpine 1.10 (LNX 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 905 Lines: 25 On Monday 2008-05-12 14:16, Tetsuo Handa wrote: >Hello. > >I'm trying to get a sysrq dump when the system hangs. >But unfortunately, typing sysrq key from the keyboard >doesn't work after the system hangs. >So, I'm trying to get a sysrq dump by automatically >writing to /proc/sysrq-trigger using a program. (a) make sure sysrq-over-keyboard is enabled (b) if the system does not react to sysrq, it is unlikely it is servicing any processes at all (c) try xt_SYSRQ (xtables-addons 1.5.5), to hopefully trigger sysrq over the network (receive routine may run in interrupt context). >In other words, does invoking sysrq routine break or taint something? No. -- 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/