From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755921Ab0DBRXL (ORCPT ); Fri, 2 Apr 2010 13:23:11 -0400 Received: from mga11.intel.com ([192.55.52.93]:4444 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755789Ab0DBRXG (ORCPT ); Fri, 2 Apr 2010 13:23:06 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.51,354,1267430400"; d="scan'208";a="786085190" Subject: Re: BUG: null pointer deref in dmar_ir_support From: Suresh Siddha Reply-To: Suresh Siddha To: "Jan.Grossmann@kielnet.net" Cc: "linux-pci@vger.kernel.org" , "jbarnes@virtuousgeek.org" , "Woodhouse, David" , "mingo@elte.hu" , "Han, Weidong" , "Song, Youquan" , LKML , "H. Peter Anvin" , "x86@kernel.org" , "stable@kernel.org" , Thomas Gleixner In-Reply-To: <1270152280.2762.249.camel@sbs-t61.sc.intel.com> References: <4BAD1676.9090704@kielnet.net> <1270057394.2866.9.camel@sbs-t61.sc.intel.com> <4BB395B0.6090007@kielnet.net> <1270083887.7835.78.camel@sbs-t61.sc.intel.com> <4BB4E400.5090602@kielnet.net> <1270152280.2762.249.camel@sbs-t61.sc.intel.com> Content-Type: text/plain Organization: Intel Corp Date: Fri, 02 Apr 2010 10:21:49 -0700 Message-Id: <1270228909.2870.52.camel@sbs-t61.sc.intel.com> Mime-Version: 1.0 X-Mailer: Evolution 2.26.3 (2.26.3-1.fc11) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2010-04-01 at 13:04 -0700, Suresh Siddha wrote: > On Thu, 2010-04-01 at 11:20 -0700, Jan.Grossmann@kielnet.net wrote: > > The patch seems to work, > > but now my kernel won't find any IDE, SATA or USB drives anymore and > > then i end up with > > > > Kernel panic - not syncing: VFS: Unable to mount root fs on > > unknown-block(0,0) > > hmm.. This sounds like a modules issue. Jan you were using modules in > your kernel config. You have initrd etc setup properly? Jan responded to me in private that this was indeed an initrd issue and this patch is working fine to him. Thomas/Peter/Ingo: please consider this patch for urgent tree. thanks, suresh