From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756317Ab1KKMEW (ORCPT ); Fri, 11 Nov 2011 07:04:22 -0500 Received: from ogre.sisk.pl ([217.79.144.158]:35834 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751748Ab1KKMEV (ORCPT ); Fri, 11 Nov 2011 07:04:21 -0500 From: "Rafael J. Wysocki" To: "Wouter M. Koolen" Subject: Re: [BUG] NULL deref in swapin_readahead Date: Fri, 11 Nov 2011 13:07:02 +0100 User-Agent: KMail/1.13.6 (Linux/3.1.0-rc10+; KDE/4.6.0; x86_64; ; ) Cc: len.brown@intel.com, pavel@ucw.cz, linux-kernel@vger.kernel.org References: <4EBD0767.8040901@cwi.nl> In-Reply-To: <4EBD0767.8040901@cwi.nl> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit Message-Id: <201111111307.02203.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Friday, November 11, 2011, Wouter M. Koolen wrote: > Hi suspend gurus, > > I got the attached NULL deref while closing and immediately reopening my > laptop lid. The laptop is configured to suspend to RAM. > > Google yields nothing similar for "unable to handle kernel NULL pointer > dereference" "swapin_readahead" "radix_tree_lookup", so I guess this is > an as-yet unknown problem. If not, please excuse the noise. > > Kernel (vanilla 3.1.0) config attached. The laptop is a MacBook4,1. > > The machine goes on to print a series of soft lockup reports, but I > assumed they are PTSD and omited them. 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