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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41716C46467 for ; Thu, 19 Jan 2023 16:31:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229762AbjASQbj (ORCPT ); Thu, 19 Jan 2023 11:31:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230219AbjASQbY (ORCPT ); Thu, 19 Jan 2023 11:31:24 -0500 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DDD504E518 for ; Thu, 19 Jan 2023 08:31:22 -0800 (PST) Received: by mail-il1-f200.google.com with SMTP id r6-20020a92cd86000000b00304b2d1c2d7so1922747ilb.11 for ; Thu, 19 Jan 2023 08:31:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Dmhp+2IAI3g3qDOv15A77xhg9oc5VA7p9d1CqGLWy2s=; b=fqoTK5ecpmr53Iu/NzngRJbu4/9cGCJpiYCABKhINjU3Ltk1BUDG6abR+8fqOCuv4B 9MEPgRu98Z9Ekf6hYW139TEDnDzy8sBBiQYLiuDd6ckoZKIXpnGxk67vf9QI6ySKwOnA vUhD95zSZD11FkvFCQatyiQCpKYAt95gtx25GuByYZLe5TfmoAWqJw2ND2XNBXP/ELk1 cml89nXvXVsQ15+rlYJIT5MKeFAozBGgT/x0McDrTdqn0uIFiPMM8S+pmatwtAshZ9Ac 5gl7dLfIVFlSvvMQ0MyynxSKwRJzMNI1h5O3KOd/ysfs0gct7t05c4s+Uc4tLXryXafz Lo9w== X-Gm-Message-State: AFqh2kqE29D7UPCxmFiE6cIoCxy6/tpuGO+vXOvsiEG3Df5jWf1jQA+Z oUsNC1d3raOKzVN7rlmouqYK5PQ7DomHYML2ypvdgLwb9isL X-Google-Smtp-Source: AMrXdXtVr57YNgl1eBdlM3krd9MaBpgSpj/K+zbJkq3fy2mnWv0s6siuxSohmU7qeB9JTHKab9JcXFmoy/4bPOO9VyZta6YyMWhI MIME-Version: 1.0 X-Received: by 2002:a92:2807:0:b0:30e:d439:eccc with SMTP id l7-20020a922807000000b0030ed439ecccmr1260604ilf.76.1674145882239; Thu, 19 Jan 2023 08:31:22 -0800 (PST) Date: Thu, 19 Jan 2023 08:31:22 -0800 In-Reply-To: <0000000000003198a505f0076823@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009cfc1705f2a07641@google.com> Subject: Re: [syzbot] [udf?] BUG: unable to handle kernel NULL pointer dereference in __writepage From: syzbot To: akpm@linux-foundation.org, hch@lst.de, jack@suse.com, jack@suse.cz, linkinjeon@gmail.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com, willy@infradead.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit 36273e5b4e3a934c6d346c8f0b16b97e018094af Author: Christoph Hellwig Date: Sun Nov 13 16:29:02 2022 +0000 udf: remove ->writepage bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15176e66480000 start commit: 77856d911a8c Merge tag 'arm64-fixes' of git://git.kernel.o.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=17176e66480000 console output: https://syzkaller.appspot.com/x/log.txt?x=13176e66480000 kernel config: https://syzkaller.appspot.com/x/.config?x=55043d38f21f0e0f dashboard link: https://syzkaller.appspot.com/bug?extid=c27475eb921c46bbdc62 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=141da6e7880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17d81b8b880000 Reported-by: syzbot+c27475eb921c46bbdc62@syzkaller.appspotmail.com Fixes: 36273e5b4e3a ("udf: remove ->writepage") For information about bisection process see: https://goo.gl/tpsmEJ#bisection