From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754221Ab1KKXzL (ORCPT ); Fri, 11 Nov 2011 18:55:11 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:57523 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752081Ab1KKXzK (ORCPT ); Fri, 11 Nov 2011 18:55:10 -0500 Date: Sat, 12 Nov 2011 00:55:02 +0100 From: Pavel Machek To: "Wouter M. Koolen" Cc: "Rafael J. Wysocki" , len.brown@intel.com, linux-kernel@vger.kernel.org Subject: Re: [BUG] NULL deref in swapin_readahead Message-ID: <20111111235502.GA29116@elf.ucw.cz> References: <4EBD0767.8040901@cwi.nl> <201111111307.02203.rjw@sisk.pl> <4EBD14B4.5000201@cwi.nl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4EBD14B4.5000201@cwi.nl> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! > >Well, the trace doesn't indicate how the problem is related to the > >suspend/resume code paths. > > > >Is this a regression for you? > > > >Thanks, > >Rafael > Hi Rafael, > > This problem manifests itself when resuming from RAM, but only very > infrequently. This is the third occurrence since I started using > this machine three months ago. I suspend it to RAM at least twice a > day. The previous two occurrences were on 3.0. So not a clear > regression in that sense. (Note this is from memory, I didn't record > those other two oopses) > > However, since it happens immediately upon resume, I suspected it > was related. Would you have any tips for stress testing resumes? If > I can increase the reproducibility then I could try to bisect it. It should be possible to configure machine for Wake-on-lan on wake-on-rtc, then run s2ram in a loop... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html