Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759343AbYCBXbY (ORCPT ); Sun, 2 Mar 2008 18:31:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751304AbYCBXbQ (ORCPT ); Sun, 2 Mar 2008 18:31:16 -0500 Received: from an-out-0708.google.com ([209.85.132.247]:8132 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751202AbYCBXbP (ORCPT ); Sun, 2 Mar 2008 18:31:15 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:mail-followup-to:references:mime-version:content-type:content-disposition:in-reply-to:user-agent; b=IQH4vz9BNPFFvXomLp8sZbq89Aoh1igoxOVNEYZrzTT0IocmxZCM43BHxEGSB2WSAeuJ3dT+L5nTmQHfIojqpIwozAAYGnCE+lwrhsgs+qTab4kqKzJw82s8PWZ6JedsMSrTH6BQMqYVqBBXRfxXAhO3sg3sJanulpEjpi020x8= Date: Sun, 2 Mar 2008 20:34:15 -0300 From: "Carlos R. Mafra" To: Mikael Pettersson Cc: linux-kernel@vger.kernel.org, James.Bottomley@HansenPartnership.com, htejun@gmail.com, jens.axboe@oracle.com Subject: Re: [BUG] 2.6.25-rc2-git3 broke cdrecord Message-ID: <20080302233415.GA6258@Pilar> Mail-Followup-To: Mikael Pettersson , linux-kernel@vger.kernel.org, James.Bottomley@HansenPartnership.com, htejun@gmail.com, jens.axboe@oracle.com References: <200803022053.m22KrP2Y023591@harpo.it.uu.se> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200803022053.m22KrP2Y023591@harpo.it.uu.se> User-Agent: Mutt/1.5.16 (2007-06-09) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1864 Lines: 45 On Sun 2.Mar'08 at 21:53:25 +0100, Mikael Pettersson wrote: > On my main workstation (Intel P965 chipset, ICH8 SATA driven by ahci, > Samsung/Toshiba SH-203P SATA DVD writer, FC5 user-space), cdrecord > stopped working on the 2.6.25-rc3 kernel, with the complaint: > > Warning: controller returns zero sized CD capabilities page. > Warning: controller returns wrong page 0 for CD capabilities page (2A). > > There's nothing in dmesg to suggest that the kernel has experienced > some problem. > > 2.6.25-rc2-git2 was the last working kernel, 2.6.25-rc2-git3 up to > today's 2.6.25-rc3-git3 are all non-working. > > I've narrowed the cause down to these two commits in 2.6.25-rc2-git3: > > 40b01b9bbdf51ae543a04744283bf2d56c4a6afa > block: update bio according to DMA alignment padding > > 6b00769fe1502b4ad97bb327ef7ac971b208bfb5 > block: add request->raw_data_len > > Four or so subsequent commits depend on the second of these, so it's > easier to test them by applying them to -git2 than to revert them. > > Also, these two need to be treated as a unit. With only the first > applied, I get a massive delay as init tries to start udev, and then > if I try cdrecord it hangs in an unkillable state. > > I've put some information in > : > - the kernel's .config > - cdrecord -VV dev=/dev/scd0 blank=fast output for 2.6.25-rc2-git2 and -git3 > - strace -v logs for the above cdrecord runs I will try to help by pointing you to the patch here: http://lkml.org/lkml/2008/2/28/76 It seems your problem is similar to the one Mike Galbraith reported. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/