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=-0.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 58986C433ED for ; Mon, 3 May 2021 12:42:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E269611C9 for ; Mon, 3 May 2021 12:42:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233693AbhECMmu (ORCPT ); Mon, 3 May 2021 08:42:50 -0400 Received: from mout.gmx.net ([212.227.17.20]:47431 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233683AbhECMmu (ORCPT ); Mon, 3 May 2021 08:42:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1620045715; bh=MgDjGj9W7AftKzP2PEOO/fWBeRFeC5Rr2QPkxBrpCAo=; h=X-UI-Sender-Class:Subject:From:To:Cc:Date:In-Reply-To:References; b=PsgzlFJ3WJl7vp/jTBhLPwPyFVnpjdbOO3n3URd6Fe2Hf5RvmpAMsS5te9ZH6geaj lZFFM1o+/zQCnjzAIzr4FFDoQzkhjPkfDGG6g844D6ciQI9cMZOh0qVrZAj/JANp7A mJTBEGgWDMC8jibzMksQhlkhQoF9ifG9+KojGKUA= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from homer.fritz.box ([185.221.149.135]) by mail.gmx.net (mrgmx104 [212.227.17.168]) with ESMTPSA (Nemesis) id 1N1fii-1lSITz0ZxI-011xvo; Mon, 03 May 2021 14:41:55 +0200 Message-ID: Subject: Re: block, bfq: NULL pointer dereference in bfq_rq_pos_tree_lookup() From: Mike Galbraith To: Paolo Valente Cc: lkml , linux-block Date: Mon, 03 May 2021 14:41:54 +0200 In-Reply-To: <9732EA9F-E15B-48E1-9B92-2D74F75C6331@linaro.org> References: <8c38408d27f1032f2a664838e523376c5da09a80.camel@gmx.de> <9732EA9F-E15B-48E1-9B92-2D74F75C6331@linaro.org> Content-Type: text/plain; charset="ISO-8859-15" User-Agent: Evolution 3.34.4 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:/imrIJ5eJDQMTerBLZpi1T65wqIRlO7L71vz8GpusocRzO7mcNH GuWuLaxhXpgqWAIOblRWf2eG/yBttNO/gRBsIfnr1a2sk3BlcFgNUNwAm/Fbe7qkF/NhXBl 4youAWSC5tGzrVC3RCBuIfsepY4zHt0XXROZNHFoW7cb5yQlPhWzHs8J+oyNuMQjG//b7qH O+WdNpZlNeEqw/6o4w+rA== X-UI-Out-Filterresults: notjunk:1;V03:K0:2Vzkgk2lTPY=:HGj2eoEPDLNCvYS2Rpc9gN yf5sLrpi4v+sFRQkFIH1CeIm6GASGQ0zFFF9zglH+58adZwzNZBa5nGTJEx8Dp3nJLcYZLgfG BeHbb6DGSMEd9iryJIUj1TIl+rcMUdQ1g73G9EbeLD+EMT46Wi4moUyzhIVK5CAch/tYES7A+ nLoS3U9uNa9kVe4TSi+sU5te72D4FH/4euRA5Jq4kecmzq0vPwQzW36G9Cwd9oNmqm56Svo8V 4sNaQ+xbZeevLqi3bDp0jOUdHk2AIN10/OVXQS5GWpZa/cyBdreLye5OisfDmI5Yc99FO0goq cOt5Fn7SCCOSDRfVE7HPQAMccBg0niAPgJIHvs9fLswqz+IJ+02zXzR6pomfnJOryJ2ysFhbf m1qCtKM3JXH9FbOeAVUFhlh+WUGQb+eLEitv/C0VKgb4Z/4tlztlTOAu1bH1Gezb+JE/xf1Nf 5RlOOGSIOM8L5me6Ti4CvRUkC09GqtHZDZrZrVIuCuE5QP3BAGY00GXaOiQvD7oHEY5CYtqYP kRof7eU5mhMwoFYwDHelAAGngI04s64Z3lnQPLn6YieUOlTBYQWi+/onfhB06qUOYv+vQMMj1 cKh4R89TuMg1XY0WL31C5nSWLTuJdonxCvdmUlPtn0n3Z7zJDjwmFUEWPaS8Sz2ROXp7YBl2h 5/SkZHUkTcNEWcdGrO04XJWsLNyn/Ep0UJ6m+61TyO/z31ehtjairS34AHzCC47rXssCJF/01 mhA5P67VPgK8QZk+m6AvKrWCWNQMd6H1X9S7bc5XTA+ospY1MZA+RdA9tUE5Qs0SgeQhlu3pt Iyfw7K3SXrLJZ9RQ2zNyqLG43s8oG0NLB17HJDbN3D8Ank14xVGbgiPaC21z2tQwLmI8NJPhl 8a7sdnJFYX1g7Noub600HjqjjctKsMGkVYhcXPUM6Qw3Vta4WdyIrzbBHUAAaXZ/4fF0XxN+P WMxzQhcghXKTbuy0oyjvvru4eJrfflMX07TQ1i96P52Bs0xIpUs7FWw2QYv2FbE81j1AP2oxD gcWypf524Q2vleJihH9sswhl4af+woVJZxrZJbemdAQyJY7rCxLzkkoJTjTXsNYHMV/nOlgQH zT6KSFL6/sHXu+frGyywLhP0OxPTjlrnahrWOsQBXa72UDVagdgahR/6N+8hj6swH0BIpPkcg Gb0oly1V8t64PyfYsMwRSDMwSD5GS0bwMtBIrNM752gAdM3BFQYKYy3As/znfex6wWybg= Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Mon, 2021-05-03 at 11:52 +0200, Paolo Valente wrote: > Hi Mike, > I've waited a little bit before replying, because I've worked on a dev > patch series, for debugging another crash. I'd like to use > this series for your failure too, as the OOPS you report > unfortunately does not ring any bell :( > > So, could you please try to apply this patch series? If it doesn't > apply, I'll rebase it. This bug isn't deterministic, but I can wedge your set into my devel trees, and see if anything falls out. -Mike