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 EDB3CC63777 for ; Tue, 17 Nov 2020 23:19:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 92AA5222E9 for ; Tue, 17 Nov 2020 23:19:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728030AbgKQXTN (ORCPT ); Tue, 17 Nov 2020 18:19:13 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:47017 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725613AbgKQXTN (ORCPT ); Tue, 17 Nov 2020 18:19:13 -0500 Received: by mail-il1-f198.google.com with SMTP id q5so144854ilc.13 for ; Tue, 17 Nov 2020 15:19:11 -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=sCJOc52f+ykN2k2Nsk4q5GEkZUdIbCHBG3TzWEYybVs=; b=Zne53bLA/6uxnWcdLmvt3YIhfu/GSKwr/cw7dQihgqDmXfn5YhdQ62fuvtuQ2O4p9K 6ia93fmci+BaHg04RZT69S4CCgIfj5L4+/ChaP1bYkdqWolW4L11OntDdHW/hegQwZWv YztDfpBuXtRplcy3ts3xtCCclPfly/YRqgtkTP2AG6ObXGYu8+iSA+es6CdDjt7Xcg2c HNQe4zifY/NEBGbrHaZLPBKTfXNuuAZ0QIQtZlKMIyryG6osjE2lDgwL6ND8e8G0KoxQ XvB40Mxq7foIfboic6r/a2UtrH8lmYfl+e4KzjhW7ghHKySzZhxgPVhZTthhQqY5+b6W kFjg== X-Gm-Message-State: AOAM530j/prxkcIIHjWaG8MRlxEmkveo8y9LkYKSRzpsWyrD+40cuRFD 7NfrehGkR8yOBYRdtu07+Ks0rIn1+cW2epU/dhgX6CkSLyCE X-Google-Smtp-Source: ABdhPJxChT34/B8KR5M9iyDfeWrPy5FLGPrzPfIfrP0j6CGCmLNUnK5X6P3va84cfBm0fFQ6ORDCOH2TTHVDnJZpXsuI7FTYs+Ub MIME-Version: 1.0 X-Received: by 2002:a92:c70b:: with SMTP id a11mr5696524ilp.151.1605655150607; Tue, 17 Nov 2020 15:19:10 -0800 (PST) Date: Tue, 17 Nov 2020 15:19:10 -0800 In-Reply-To: <0000000000009c775805b0c1b811@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e2437705b455b8bb@google.com> Subject: Re: possible deadlock in kill_fasync 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=10b46429500000 start commit: 7c8ca812 Add linux-next specific files for 20201117 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=12b46429500000 console output: https://syzkaller.appspot.com/x/log.txt?x=14b46429500000 kernel config: https://syzkaller.appspot.com/x/.config?x=ff4bc71371dc5b13 dashboard link: https://syzkaller.appspot.com/bug?extid=3e12e14ee01b675e1af2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14b1dba6500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12de8636500000 Reported-by: syzbot+3e12e14ee01b675e1af2@syzkaller.appspotmail.com Fixes: e918188611f0 ("locking: More accurate annotations for read_lock()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection