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 964D2C433E6 for ; Thu, 18 Feb 2021 18:49:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 53AF964EC2 for ; Thu, 18 Feb 2021 18:49:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232800AbhBRStL (ORCPT ); Thu, 18 Feb 2021 13:49:11 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:45302 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235004AbhBRSCy (ORCPT ); Thu, 18 Feb 2021 13:02:54 -0500 Received: by mail-io1-f71.google.com with SMTP id u1so1900124ior.12 for ; Thu, 18 Feb 2021 10:02:38 -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=onGtYJ8oUCUNLFfJZY/KA1YQLdf7XN2ozMSXExjjyWI=; b=ERNdi1u9emY+aXOot7/8xCpU0DUB87m7nVdAAhNBif4NkHYEfKo+fN3rRM63IBL1rf p7OWsnGhaSpLDhBGw2Y58OW0/x60/XvzGxrTCXQmwo4qdP2wQkfwGtMV9WgmVPAbUI4r PoStgjldsosq74s1WaFUYsc5K8S82ryW8+FnCCCKNUWJ+3ewN5s1D1QKcxBbW+di08Ce WBEIAcGRsgAMbC0Xjh9mR9uf5YMI7dilSLa3P+/dAIKqs8MaX+XRG4NvIXPOpoHJEHrb gAtnSQlM1nn/zbZs8EZjOoRe2WQVPG3JX5wXRqvMQqLii8VFiOsMDYcRYmN4CFSe29uk Ea8g== X-Gm-Message-State: AOAM533TsatZ3hFF+rXpSQRcOdB48AzH2pwrV5V3EW386PbcLOjmrAyY oN/mTT9MR4qposMyco5nv1PME26QLfREytyA0GF2HKXf6Nbz X-Google-Smtp-Source: ABdhPJzrjrVf/do+sjx3V/gbXM8vq8+ORZsXvnAdBWF1stIqNt+D99VOUpRfusMvgQrSJn3Mt6325yuKwP3rkrVVssrpUI0oWu72 MIME-Version: 1.0 X-Received: by 2002:a92:d0d:: with SMTP id 13mr344338iln.36.1613671333222; Thu, 18 Feb 2021 10:02:13 -0800 (PST) Date: Thu, 18 Feb 2021 10:02:13 -0800 In-Reply-To: <000000000000e6f01f05bb8b9268@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000099df5f05bba022a8@google.com> Subject: Re: possible deadlock in inet_stream_connect From: syzbot To: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, dsahern@kernel.org, fw@strlen.de, john.fastabend@gmail.com, kafai@fb.com, kpsingh@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, mathew.j.martineau@linux.intel.com, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com, yoshfuji@linux-ipv6.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org syzbot has bisected this issue to: commit 40947e13997a1cba4e875893ca6e5d5e61a0689d Author: Florian Westphal Date: Fri Feb 12 23:59:56 2021 +0000 mptcp: schedule worker when subflow is closed bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=109b88f2d00000 start commit: 9ec5eea5 lib/parman: Delete newline git tree: net-next final oops: https://syzkaller.appspot.com/x/report.txt?x=129b88f2d00000 console output: https://syzkaller.appspot.com/x/log.txt?x=149b88f2d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=dbc1ca9e55dc1f9f dashboard link: https://syzkaller.appspot.com/bug?extid=b0f5178b61ed7f3bbb46 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=177a6d14d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10caeb02d00000 Reported-by: syzbot+b0f5178b61ed7f3bbb46@syzkaller.appspotmail.com Fixes: 40947e13997a ("mptcp: schedule worker when subflow is closed") For information about bisection process see: https://goo.gl/tpsmEJ#bisection