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 153F2C433EF for ; Thu, 3 Feb 2022 02:23:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348988AbiBCCXJ (ORCPT ); Wed, 2 Feb 2022 21:23:09 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:35551 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238857AbiBCCXH (ORCPT ); Wed, 2 Feb 2022 21:23:07 -0500 Received: by mail-il1-f198.google.com with SMTP id h8-20020a056e021b8800b002ba614f7c5dso820419ili.2 for ; Wed, 02 Feb 2022 18:23:07 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=iWXNcqjV+9WEs5XX+yhW5rJvRY74SPW4WH9BDVS3ajc=; b=Y8XvKK3I/8whLZ18Qo1s0MxnLjogLZlvAOcG5mObWnNrBV331D2n1yT+oK2GRzIKsN 2WQ5dKzgqGp85+VLcWb3waLhVHpU9nsRxOn8w1CzpkhpRwbPiVhrkwzvYwPmK3b7QTaW eHqzlajRqHP30VjTu28TOTDEJyld6MQCFu2gUlH6x1NCOwH6PhgNJyzuGIFNS//BK/BQ t0VVM8KSpGDyCMTZ+aTEUvnEqoaiSmfrnkFrAD0aeZtISF9pUyyk1pjqXmElkBatL2RU F+Px1mU4EvJoykxMH1qtJQjuWMOn4gLh2fDktdOn6ZSvsUGVmGHBOVEXhEvJoAb1Nheb tNjw== X-Gm-Message-State: AOAM530njFbf6CQKj+esUbKTDzTI2Wo0aAQTqvVggTNxFKv3m+NKt5ky rh8qiGtendjQBFL9sWDm5Xyq0j6+5dANOK4OmVEn8IvVBVZh X-Google-Smtp-Source: ABdhPJxmD986HllkBDWd17NvypWwYJvhmSpWp2Dm6GbGriKJ6SNo3PTO5JIteeKeiumH9TUjTtJ5uoY1D4vEC9YouQ6xLo+QnkvO MIME-Version: 1.0 X-Received: by 2002:a02:6d11:: with SMTP id m17mr16852812jac.317.1643854987198; Wed, 02 Feb 2022 18:23:07 -0800 (PST) Date: Wed, 02 Feb 2022 18:23:07 -0800 In-Reply-To: <0000000000004cede805d58728c3@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009303f605d713d014@google.com> Subject: Re: [syzbot] possible deadlock in f2fs_write_checkpoint From: syzbot To: chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, timmurray@google.com 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 e4544b63a7ee49e7fbebf35ece0a6acd3b9617ae Author: Tim Murray Date: Fri Jan 7 20:48:44 2022 +0000 f2fs: move f2fs to use reader-unfair rwsems bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=108e6078700000 start commit: 6abab1b81b65 Add linux-next specific files for 20220202 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=128e6078700000 console output: https://syzkaller.appspot.com/x/log.txt?x=148e6078700000 kernel config: https://syzkaller.appspot.com/x/.config?x=b8d8750556896349 dashboard link: https://syzkaller.appspot.com/bug?extid=0b9cadf5fc45a98a5083 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12de9cb8700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11953798700000 Reported-by: syzbot+0b9cadf5fc45a98a5083@syzkaller.appspotmail.com Fixes: e4544b63a7ee ("f2fs: move f2fs to use reader-unfair rwsems") For information about bisection process see: https://goo.gl/tpsmEJ#bisection