From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko Carstens Subject: Re: Next June 29: Boot failure with SLQB on s390 Date: Mon, 29 Jun 2009 13:50:38 +0200 Message-ID: <20090629115038.GD9321@osiris.boeblingen.de.ibm.com> References: <20090629164851.57263dbc.sfr@canb.auug.org.au> <4A488D08.30307@in.ibm.com> <20090629103123.GC9321@osiris.boeblingen.de.ibm.com> <20090629103943.GA31299@wotan.suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mtagate6.de.ibm.com ([195.212.29.155]:49780 "EHLO mtagate6.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751549AbZF2Luh (ORCPT ); Mon, 29 Jun 2009 07:50:37 -0400 Content-Disposition: inline In-Reply-To: <20090629103943.GA31299@wotan.suse.de> Sender: linux-next-owner@vger.kernel.org List-ID: To: Nick Piggin Cc: Sachin Sant , Pekka Enberg , Stephen Rothwell , linux-next@vger.kernel.org, linux-s390@vger.kernel.org On Mon, Jun 29, 2009 at 12:39:43PM +0200, Nick Piggin wrote: > On Mon, Jun 29, 2009 at 12:31:23PM +0200, Heiko Carstens wrote: > > On Mon, Jun 29, 2009 at 03:14:40PM +0530, Sachin Sant wrote: > > > I still have problems booting next with SLQB on a s390 box. > > > > > > Write protected kernel read-only data: 0x12000 - 0x446fff > > > Experimental hierarchical RCU implementation. > > > Experimental hierarchical RCU init done. > > > console =DDttyS0=A8 enabled > > > Unable to handle kernel pointer dereference at virtual kernel add= ress (null) >=20 > This could I suppose be due to failed allocation where the caller > isn't expecting failure (or using SLAB_PANIC). >=20 > Did you manage to test with the prink debugging patch for SLQB that > I sent for the power6 boot failure? I don't think I saw a reply from > you but maybe I missed it? Could you send me the debug patch as well? I can give it a quick run as= well.