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=-4.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 77A55C433E7 for ; Wed, 2 Sep 2020 06:05:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5BE76206A5 for ; Wed, 2 Sep 2020 06:05:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726406AbgIBGFn (ORCPT ); Wed, 2 Sep 2020 02:05:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47962 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725774AbgIBGFn (ORCPT ); Wed, 2 Sep 2020 02:05:43 -0400 Received: from smtp.mfedv.net (smtp.mfedv.net [IPv6:2a04:6c0:2::19]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC050C061244 for ; Tue, 1 Sep 2020 23:05:41 -0700 (PDT) Received: from suse92host.mfedv.net (suse92host.mfedv.net [IPv6:2a04:6c0:2:3:0:0:0:ffff]) by smtp.mfedv.net (8.15.2/8.15.2/Debian-10) with ESMTP id 08265UtW030280; Wed, 2 Sep 2020 06:05:31 GMT Received: from xoff (klappe2.mfedv.net [192.168.71.72]) by suse92host.mfedv.net (Postfix) with SMTP id CFF5CC80C7; Wed, 2 Sep 2020 08:05:29 +0200 (CEST) (envelope-from bcache@mfedv.net) Date: Wed, 2 Sep 2020 08:05:29 +0200 From: Matthias Ferdinand To: Brendan Boerner Cc: linux-bcache@vger.kernel.org Subject: Re: Bcache in Ubuntu 18.04 kernel panic Message-ID: <20200902060529.GI10169@xoff> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Sender: linux-bcache-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bcache@vger.kernel.org On Tue, Sep 01, 2020 at 03:42:54PM -0500, Brendan Boerner wrote: > Hi, > > I spent the weekend verifying and isolating a kernel panic in bcache > on Ubuntu 18.04 (4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9 23:41:39 > UTC 2020). > > Is this the place to report it? I have kernel crash dumps. I'm no bcache developer, but I see there are Ubuntu kernel updates available, with bcache fixes. >From the changelogs for 4.15.0-113.114: * Regression in kernel 4.15.0-91 causes kernel panic with Bcache (LP: #1867916) - bcache: check and adjust logical block size for backing devices Perhaps you used unorthodox (neither 512b nor 4k) block sizes at bcache creation? Regards Matthias