From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758951AbeD0RSl (ORCPT ); Fri, 27 Apr 2018 13:18:41 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:41775 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758928AbeD0RSh (ORCPT ); Fri, 27 Apr 2018 13:18:37 -0400 Date: Fri, 27 Apr 2018 10:18:35 -0700 From: Guenter Roeck To: Vitaly Wool Cc: LKML , Andrew Morton , mawilcox@microsoft.com, asavery@chromium.org, Gwendal Grignou Subject: Re: Crashes/hung tasks with z3pool under memory pressure Message-ID: <20180427171835.GB628@roeck-us.net> References: <20180417160032.46915216@seldlx21914.corpusers.net> <20180418101317.74abe632@seldlx21914.corpusers.net> <20180418160755.GA10227@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-Authenticated_sender: guenter@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: authenticated_id: guenter@roeck-us.net X-Authenticated-Sender: bh-25.webhostbox.net: guenter@roeck-us.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Vitaly, On Thu, Apr 19, 2018 at 08:18:51AM +0000, Vitaly Wool wrote: > Hi Guenter, > > Den ons 18 apr. 2018 kl 18:07 skrev Guenter Roeck : > > > On Wed, Apr 18, 2018 at 10:13:17AM +0200, Vitaly Wool wrote: > > > Den tis 17 apr. 2018 kl 18:35 skrev Guenter Roeck : > > > > > > > > > > > > > Getting better; the log is much less noisy. Unfortunately, there are > > still > > > > locking problems, resulting in a hung task. I copied the log message > > to [1]. > > > > This is with [2] applied on top of v4.17-rc1. > > > > > > Now this version (this is a full patch to be applied instead of the > > previous one) should have the above problem resolved too: > > > > > > > Excellent - I can not reproduce the problem with this patch > > applied. > > > > thank you very much for testing and prompt feedback. I'll come up shortly > with the final patch. > Any updates ? Thanks, Guenter