From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31336C282C3 for ; Tue, 22 Jan 2019 16:22:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EF8A721726 for ; Tue, 22 Jan 2019 16:22:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548174170; bh=XJvHs6X0ydJ0puugVMlXnKJKSP2V9W8H397zcm1Fhk4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=l2guY0PvfOvDi4WyAC1KgD6553boF+nm0OcFkROy+AZiBplivlj499eM2iB8jkdD7 sFv0hXNyIQw0HJG80HmmbjMKccpEeeY3ka77PTx7BW+T2fO8AJmGqWHPVuKZSE2tJK 3qZUEcHBm69Dg1WxrGT1nk446YM3NCT9jko/nKLA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729031AbfAVQWt (ORCPT ); Tue, 22 Jan 2019 11:22:49 -0500 Received: from mail.kernel.org ([198.145.29.99]:49304 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728669AbfAVQWt (ORCPT ); Tue, 22 Jan 2019 11:22:49 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E3B4320870; Tue, 22 Jan 2019 16:22:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548174168; bh=XJvHs6X0ydJ0puugVMlXnKJKSP2V9W8H397zcm1Fhk4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=D5fXr4MT9XENi1tJiGfrRWW2BwuBYHjZQ5O1sAvnUuJXuAauyO5p5loWzvbKgOujw 4yeetmIMuMR2QdkCfqYomH2GdyNQvHukVh6L8eKgR0e8zWO5GvYcJyaHQLAW/nsC9u MuXOsnoiglm8csljK17HKUWR3dWbxvracdzUFEuk= Date: Tue, 22 Jan 2019 17:22:46 +0100 From: Greg Kroah-Hartman To: Marc Gonzalez Cc: Jianchao Wang , Christoph Hellwig , Jens Axboe , fsdevel , linux-block , SCSI , Joao Pinto , Subhash Jadavani , Sayali Lokhande , Can Guo , Asutosh Das , Vijay Viswanath , Venkat Gopalakrishnan , Ritesh Harjani , Vivek Gautam , Jeffrey Hugo , Maya Erez , Evan Green , Matthias Kaehlcke , Douglas Anderson , Stephen Boyd , Tomas Winkler , Adrian Hunter , Alim Akhtar , Avri Altman , Bart Van Assche , Martin Petersen , Bjorn Andersson Subject: Re: dd hangs when reading large partitions Message-ID: <20190122162246.GA22548@kroah.com> References: <398a6e83-d482-6e72-5806-6d5bbe8bfdd9@oracle.com> <20190119095601.GA7440@infradead.org> <07b2df5d-e1fe-9523-7c11-f3058a966f8a@free.fr> <985b340c-623f-6df2-66bd-d9f4003189ea@free.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.2 (2019-01-07) Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Tue, Jan 22, 2019 at 05:17:56PM +0100, Marc Gonzalez wrote: > + Greg > > On 22/01/2019 11:59, Marc Gonzalez wrote: > > > FULL SESSION LOG: https://pastebin.ubuntu.com/p/YSm82GxhNW/ > > I finally got the hung_task detector to fire: > https://pastebin.ubuntu.com/p/XDDJjf7PTb/ > > Had a chat with GKH, who said that drivers/scsi/ufs is known to be not 100% functional, > and requires some cherry-picking from downstream to handle all corner cases. Note, we know it needs that for your controller, maybe not for others. So you can't make that kind of generalization :( thanks, greg k-h