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 8915EC2D0A3 for ; Wed, 4 Nov 2020 12:18:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 414B621734 for ; Wed, 4 Nov 2020 12:18:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729488AbgKDMSJ (ORCPT ); Wed, 4 Nov 2020 07:18:09 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:48462 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726344AbgKDMSJ (ORCPT ); Wed, 4 Nov 2020 07:18:09 -0500 Received: by mail-il1-f200.google.com with SMTP id o5so10105161ilh.15 for ; Wed, 04 Nov 2020 04:18:08 -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=+3EjKaDTd8bhaaIGhp9ZVJ/VUs7Zj0b/Msvp2PVH4gg=; b=AypqWN+KLlg9KARRH6K3JuvP+ipWsfPqrYe8I4x05byGxdJC45QIlwZoyVsMGZ8zwS v1sSwjC8m9mukaLHZHUmkUfCR+Dv2KHmfpt90q/DBszGuKD/LzL/y6G1k0W6GSfqy+hq hyACaDzbfD1NBtV6+tkHl3bW0xdcrQgIdgUWNjmLPVlMp2HDul7xQXlFzyN/urh6GnE+ jtCoec7w2AT6vlfs+h/ucuAPZuAM2SmN58jCHW62NyRu4RWpqqOmvyNRkAhB0jrP8i+P KKOUDPX4kmHbC2IylcYXM/O0KalJefmNoPuVjG/XM9s1TjH8/fSZ5DYC3v5oszmskYeU IJbQ== X-Gm-Message-State: AOAM533lqbayoRR517qZWf+NXU+BqTOS5Ko+9aq21oMGKIVkW9iMiwut aDl8p58r9hRqSleLCGQGOfPGZvVAwrnbHEmh2VKzeZqxb5aD X-Google-Smtp-Source: ABdhPJx43kLEHlPlcB2tF4af+p51UNM9dagQ/w/3EDMbobnb0+j3mIWJht6+ajpgiMpjQbM7TAl0eyXZmtWS3Bt5hZGQs7pYhJLn MIME-Version: 1.0 X-Received: by 2002:a92:ba5c:: with SMTP id o89mr17503306ili.248.1604492288180; Wed, 04 Nov 2020 04:18:08 -0800 (PST) Date: Wed, 04 Nov 2020 04:18:08 -0800 In-Reply-To: <0000000000009d056805b252e883@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e1c72705b346f8e6@google.com> Subject: Re: possible deadlock in send_sigurg (2) 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=14142732500000 start commit: 4ef8451b Merge tag 'perf-tools-for-v5.10-2020-11-03' of gi.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=16142732500000 console output: https://syzkaller.appspot.com/x/log.txt?x=12142732500000 kernel config: https://syzkaller.appspot.com/x/.config?x=61033507391c77ff dashboard link: https://syzkaller.appspot.com/bug?extid=c5e32344981ad9f33750 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15197862500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13c59f6c500000 Reported-by: syzbot+c5e32344981ad9f33750@syzkaller.appspotmail.com Fixes: e918188611f0 ("locking: More accurate annotations for read_lock()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection