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=-11.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL 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 E64D7C5517A for ; Wed, 11 Nov 2020 17:44:01 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 38E6B2072C for ; Wed, 11 Nov 2020 17:44:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="l0aza8sw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 38E6B2072C Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2A3346B0036; Wed, 11 Nov 2020 12:44:00 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 247806B005D; Wed, 11 Nov 2020 12:44:00 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0E8B86B0068; Wed, 11 Nov 2020 12:44:00 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0135.hostedemail.com [216.40.44.135]) by kanga.kvack.org (Postfix) with ESMTP id D2C8E6B0036 for ; Wed, 11 Nov 2020 12:43:59 -0500 (EST) Received: from smtpin23.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 7A7CB181AC9C6 for ; Wed, 11 Nov 2020 17:43:59 +0000 (UTC) X-FDA: 77472860598.23.cap26_03072fa272ff Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin23.hostedemail.com (Postfix) with ESMTP id 5ADD537606 for ; Wed, 11 Nov 2020 17:43:59 +0000 (UTC) X-HE-Tag: cap26_03072fa272ff X-Filterd-Recvd-Size: 3473 Received: from mail-pl1-f176.google.com (mail-pl1-f176.google.com [209.85.214.176]) by imf03.hostedemail.com (Postfix) with ESMTP for ; Wed, 11 Nov 2020 17:43:58 +0000 (UTC) Received: by mail-pl1-f176.google.com with SMTP id b3so1325414pls.11 for ; Wed, 11 Nov 2020 09:43:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Tsu1wgRN/XwGLZIcqUwi0BvJaexsFk3P467mtRcVH+w=; b=l0aza8swvNOkP3/BQF1fjPWdXJ8NDZ6neGb/HBDhbCEv7IxFwebR+0GV3b01VjOOoh +EhA4UCd3guChQSOUmVdE4IhbLrZbhfl2loC6k0L6Mb+pn+X6JYoJIuo7giccGyRvknW lvgmNorVek0WmHzB8Cq6cOZRmYZTpLJRx9u+eQkYwy9alXp5Wxf7z6aLPKkU7JE9AKty +SwUYQnAfAVHg+ilizoNDvKr5T3TsC/p69GcUU+nPIINoAOsqb4u96xdnngvNzU6nsuG f95hD+JN3q7c9XkOq/JSc7mgYguAu1iQx6H/eJ+Ps1PZV/8W5ZUIlifeKkIukHg+9o+6 6BTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Tsu1wgRN/XwGLZIcqUwi0BvJaexsFk3P467mtRcVH+w=; b=gFSUzwthKY3glL4GPHes9gMCj8iBvuWvySbf8Bm3l+RT5+uDV0ZhBc6nIHm6zTVmVJ z8wII67PzunAr/b2ZrrfXyD42Dh7OA4a/cEOcpduHLpRsnKbJ6DhEC6mlFxwf1ZeOxUl TQvoni6wMIlRlUngG4FHAUdKlk7TsyHPXf0VYXWsMyI8QN/LaKWBFR1PTy/F6qo7wDe6 Ipa2bleM7metAJg70PytSD9YkKjNAgdyw5PYHsOoJycirrFdva8iV+zUnjVEnneuGJS0 gnA/UeEmm5F4/9M+2UKoO2fFuA6D0BiXnoiNc+wAW3yDxEY9s16cd2OMZn6oMp5KsMHN NE2A== X-Gm-Message-State: AOAM530HNW7VBwZ6pSZiN0n6YEtQOGPA++MLRVQtQ3HryTzf6tnfvADd oCaFYEoekAzPb8gNVyx4z9iqK8EY3qrcQko9M2fJ0A== X-Google-Smtp-Source: ABdhPJzO1ttJvAzBSg/S2s27I/7TEhnJ1LpjynWSVH/0ZPre4UGMid8v2eZv1EVmiuPhDDZTp5wz9Rg0ACvrOd8M1D0= X-Received: by 2002:a17:90b:3111:: with SMTP id gc17mr4869942pjb.41.1605116637429; Wed, 11 Nov 2020 09:43:57 -0800 (PST) MIME-Version: 1.0 References: <000000000000fe575905b3cff92c@google.com> In-Reply-To: From: Andrey Konovalov Date: Wed, 11 Nov 2020 18:43:46 +0100 Message-ID: Subject: Re: linux-next boot error: BUG: unable to handle kernel NULL pointer dereference in mempool_init_node To: Qian Cai Cc: syzbot , Andrew Morton , LKML , Linux Memory Management List , Linux-Next Mailing List , Stephen Rothwell , syzkaller-bugs , Dmitry Vyukov , Alexander Potapenko , Marco Elver Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Nov 11, 2020 at 5:26 PM Qian Cai wrote: > > It looks to me the code paths below had recently been modified heavily by this > patchset. If this is reproducible, it can be confirmed by reverting it. > > https://lore.kernel.org/linux-arm-kernel/cover.1605046662.git.andreyknvl@google.com/ I'll try to reproduce this and figure out the issue. Thanks for letting us know!