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=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, 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 6A9C4C388F9 for ; Sun, 1 Nov 2020 00:21:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 11DF620791 for ; Sun, 1 Nov 2020 00:21:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726229AbgKAAVO (ORCPT ); Sat, 31 Oct 2020 20:21:14 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:50501 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726190AbgKAAVN (ORCPT ); Sat, 31 Oct 2020 20:21:13 -0400 Received: by mail-il1-f197.google.com with SMTP id e87so7452556ill.17 for ; Sat, 31 Oct 2020 17:21:13 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=+t+XR/wTDNVTtYlWW7f3zi6b97xo3W0UmbwmNVGd3Gc=; b=fwlIOm3Lt8W8QOFET7kojPJH7gurVtalSFdgW+IllYGhpzdpc2GDjOCNRAevjZiXZn e9Mv6bjswgqYU8jFtdiaE6OyHvUGkzUt/mv0AlBBrWq/5XxM0LB/kX2SADwsk1RyirL1 FCybiLjmezs4xDgUIN6cd1/eFpvBPNY6Qg3fng0Tm+MBdIylcbK2Os3frsd2Cog741DJ kXxWVcUMkuHOp+PDfwOR6A8X0H21/HRxA5GhFhyRNWUIanDkOXURrGXxzv4RJf7L0FN/ h7JfO2EJ6LBCdsnzELs+oPuyFWlXMl2jyfJ9CTFEty2KOnY8dn5sGY/cBBYGievtt2dm cNWg== X-Gm-Message-State: AOAM5300xB1LNE6MypWMpSfY1PpS63XX9AdNnbz2wxTir+K1UDu5/l0c KVNBiR4ix5p2K9lpLDWACS/eaLikdEpe/uccgCttBLsXyUNE X-Google-Smtp-Source: ABdhPJx9/DjV+k8sOmvzPjKK32S16JsI+YZVDjMqaLkwalHTfuft4cgC7Y7++4NcGry+VOZXzhj0btnaP4vps+OdMzSL0drKKzEG MIME-Version: 1.0 X-Received: by 2002:a92:ad03:: with SMTP id w3mr5686873ilh.53.1604190072610; Sat, 31 Oct 2020 17:21:12 -0700 (PDT) Date: Sat, 31 Oct 2020 17:21:12 -0700 In-Reply-To: <0000000000005b4a3805b05a75f8@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006e29ed05b3009b04@google.com> Subject: Re: possible deadlock in do_fcntl From: syzbot To: bfields@fieldses.org, boqun.feng@gmail.com, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, will@kernel.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 e918188611f073063415f40fae568fa4d86d9044 Author: Boqun Feng Date: Fri Aug 7 07:42:20 2020 +0000 locking: More accurate annotations for read_lock() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1292881a500000 start commit: 4e78c578 Add linux-next specific files for 20201030 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=1192881a500000 console output: https://syzkaller.appspot.com/x/log.txt?x=1692881a500000 kernel config: https://syzkaller.appspot.com/x/.config?x=83318758268dc331 dashboard link: https://syzkaller.appspot.com/bug?extid=e6d5398a02c516ce5e70 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13b24ecc500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13c01512500000 Reported-by: syzbot+e6d5398a02c516ce5e70@syzkaller.appspotmail.com Fixes: e918188611f0 ("locking: More accurate annotations for read_lock()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection