From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932751AbWF1Gnx (ORCPT ); Wed, 28 Jun 2006 02:43:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932749AbWF1Gns (ORCPT ); Wed, 28 Jun 2006 02:43:48 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:53429 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S932747AbWF1Gnr (ORCPT ); Wed, 28 Jun 2006 02:43:47 -0400 Date: Wed, 28 Jun 2006 08:38:59 +0200 From: Ingo Molnar To: Andrew Morton Cc: Zou Nan hai , linux-kernel@vger.kernel.org Subject: Re: [Patch] jbd commit code deadloop when installing Linux Message-ID: <20060628063859.GA9726@elte.hu> References: <1151470123.6052.17.camel@linux-znh> <20060627234005.dda13686.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060627234005.dda13686.akpm@osdl.org> User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: -3.1 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-3.1 required=5.9 tests=ALL_TRUSTED,AWL,BAYES_50 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts 0.0 BAYES_50 BODY: Bayesian spam probability is 40 to 60% [score: 0.5000] 0.2 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Andrew Morton wrote: > > We see system hang in ext3 jbd code > > when Linux install program anaconda copying > > packages. > > > > That is because anaconda is invoked from linuxrc > > in initrd when system_state is still SYSTEM_BOOTING. [ argh ...! ] > > Thus the cond_resched checks in journal_commit_transaction > > will always return 1 without actually schedule, > > then the system fall into deadloop. > > That's a bug in cond_resched(). > > Something like this.. Acked-by: Ingo Molnar Ingo