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 B9B01C388F7 for ; Sun, 1 Nov 2020 00:21:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 62ED3221FF for ; Sun, 1 Nov 2020 00:21:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726200AbgKAAVN (ORCPT ); Sat, 31 Oct 2020 20:21:13 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:56206 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725987AbgKAAVN (ORCPT ); Sat, 31 Oct 2020 20:21:13 -0400 Received: by mail-il1-f198.google.com with SMTP id d9so7452688iln.22 for ; Sat, 31 Oct 2020 17:21:12 -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=qkv2SJtTwVs2PHobfEi+MVSV5YoE3AB9JPM6FW7UGIywhEKYL8g2LLBFJ2WZV0dNdb H0CbuUH9bgslbmn5V8xmUpc86A7RgucpN1Y1IwEE8zO5C3DmB8TAB5bYOESOLMA5sUU4 /mYDCZGHbIqqBJbnEHX55KOuIjRLNO6dwoHuyU5hD1mfLHxVLQ5Bp/dLFard4em7YQbu cD/57w8AEw8Et/8ExCHAMv88xAxFgUSVwk/T3j7908o7YiETW2SFiN7QCSQEUOP3h0Lv tS56XZC/IgI6Q9Zq4NynSrwFt47wVE9HXJWA0ooJIuxRSWSwERVxUMpx+IvdSEKzWBNR WL5A== X-Gm-Message-State: AOAM5308XJRCzSfVJCHsVzSVYIoUVkJq9hINr6YGBSNO7LByu9/HnetW iQBRprRvawg7ZUSh/m/uTGJRbNMO8Eug70/1loQ4gfEJq28X 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-fsdevel@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