Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755410Ab3IDSV0 (ORCPT ); Wed, 4 Sep 2013 14:21:26 -0400 Received: from mail-qa0-f46.google.com ([209.85.216.46]:59504 "EHLO mail-qa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753493Ab3IDSVY (ORCPT ); Wed, 4 Sep 2013 14:21:24 -0400 Date: Wed, 4 Sep 2013 14:21:17 -0400 From: Tejun Heo To: Peter Wu Cc: Alan Stern , Kernel development list , Jens Axboe Subject: Re: [PATCH] writeback: fix NULL dereference when device is gone Message-ID: <20130904182117.GE26609@mtj.dyndns.org> References: <1755678.6GItDDY0bW@al> <20130820133308.GE3926@htj.dyndns.org> <2884335.eGSKV8oXr1@al> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2884335.eGSKV8oXr1@al> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 984 Lines: 28 Hello, On Thu, Aug 29, 2013 at 12:31:11AM +0200, Peter Wu wrote: > I applied your fix in the workfn, but now dd does not stop with EIO. If I run > `sync`, then I see: > > [11882.645618] quiet_error: 591905 callbacks suppressed > [11882.650589] Buffer I/O error on device sdd, logical block 129652880 > [11882.656850] lost page write due to I/O error on sdd > [11882.661974] Buffer I/O error on device sdd, logical block 129652881 > ... > > Any other ideas? For now I will stick to the original patch. That probably > does not solve the root issues, but it is at least a workaround to prevent the > machine from locking up. I'm out of ideas at the moment and maybe we should just stick to your patch for now. :( Thanks. -- tejun -- 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/