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, URIBL_BLOCKED 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 B9668C64E8A for ; Mon, 30 Nov 2020 19:24:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 64CE32076E for ; Mon, 30 Nov 2020 19:24:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388332AbgK3TX6 (ORCPT ); Mon, 30 Nov 2020 14:23:58 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:55062 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725987AbgK3TXr (ORCPT ); Mon, 30 Nov 2020 14:23:47 -0500 Received: by mail-il1-f200.google.com with SMTP id z8so11335237ilq.21 for ; Mon, 30 Nov 2020 11:23:32 -0800 (PST) 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=uf/aZgeXPqEFjXuJZzr2FsvsM6z9f8DkBMhU/AhY4B4=; b=A39wbuAbg0w+EBCLrMFW2X5XmE5Avnl3gtoIoFtMM58UcBFwQfc+62L2HURmWS4oPw 5poph9PQp/MI01AUjYRUsjxJJl0QzCDj8IuGtQhDHt51yg9EE72n80lyni0j4ZcbbWaO EjIjuTSpRu8K/MjPorac3XJsrUuByCFOI1fYDuytW7sgayOb0XFgLnhrJDPnaWtEwbku TP0Gq9AHpO+igbaUYJ9sMK0aEyPOE+4HFZzezT4HJUsE+OpSuKw9cV7ETmo7ucAPy9Hc YDLN8O+PjWH2Oiu+08D82m/7gdj/9ByTnChbGLUq9KgMhlA1vw5bwW2A5t2uKgS1bYjz xvCg== X-Gm-Message-State: AOAM5312svMegwyLTmiEXPfTTuBM1GbM+2UFat5BDz+RVheWFfsNTnC6 YD0yipZuHD0FhOt8eLDldoRfllkIg9cBw9Qq4uU5x2hJyg5M X-Google-Smtp-Source: ABdhPJy1LqIVueVQnUzmecAD0qfntY0qn6d19XP+O81iSfXCPD0VyAXXg8u9XiqkW0yIcc0/lYI943TSZMavOE7gVSbCOgl3XBP5 MIME-Version: 1.0 X-Received: by 2002:a05:6e02:13a3:: with SMTP id h3mr20119593ilo.164.1606764187097; Mon, 30 Nov 2020 11:23:07 -0800 (PST) Date: Mon, 30 Nov 2020 11:23:07 -0800 In-Reply-To: <000000000000bf710a05b05ae3f6@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009c212f05b557f00a@google.com> Subject: Re: possible deadlock in f_getown 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=122fe51d500000 start commit: b6505459 Linux 5.10-rc6 git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=112fe51d500000 console output: https://syzkaller.appspot.com/x/log.txt?x=162fe51d500000 kernel config: https://syzkaller.appspot.com/x/.config?x=b3a044ccf5b03ac4 dashboard link: https://syzkaller.appspot.com/bug?extid=8073030e235a5a84dd31 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11b43d79500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16f2ed79500000 Reported-by: syzbot+8073030e235a5a84dd31@syzkaller.appspotmail.com Fixes: e918188611f0 ("locking: More accurate annotations for read_lock()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection