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=-7.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 81A8FC10F29 for ; Mon, 9 Mar 2020 12:57:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5614720675 for ; Mon, 9 Mar 2020 12:57:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ziepe.ca header.i=@ziepe.ca header.b="PND02V6c" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726464AbgCIM5v (ORCPT ); Mon, 9 Mar 2020 08:57:51 -0400 Received: from mail-qt1-f195.google.com ([209.85.160.195]:43877 "EHLO mail-qt1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726450AbgCIM5v (ORCPT ); Mon, 9 Mar 2020 08:57:51 -0400 Received: by mail-qt1-f195.google.com with SMTP id l13so1754019qtv.10 for ; Mon, 09 Mar 2020 05:57:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ziepe.ca; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=miMLkBCmq91TU9yIA6m0qBL/sLuRcI7EOPQvuCnK0ME=; b=PND02V6c5mkNsAkLk07pOXpP9XvnX4Sdm+ABzlZ1nv0JPQ/kAsdlU0JofrwLRESoPH CJSDhAOJfPNqAeooa7Z4BlQjtvBloG7P9L7W4NK7c3icW41EFX4lohMbM/6TEwtXZQi1 SolkrNZGusb9a+Qt2Lk0k+QzLeMnnkBC61PKKgbKW/zug4QUS1Fg00KOrX5Lo2odMTeT 3wGJmYZFTq12k2X4iAQMIM9Ca5WBn2xilTCI9Bu8nVxSp+u6jQo2iw0/cjMLoQf0Jt1K /OZGS+ljIeMI1n3j/DJkgTkS7k5+x5pgW+36xpoiPA+zcoZ/w9XChkMf/9rhpcITFlSE l7Ow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=miMLkBCmq91TU9yIA6m0qBL/sLuRcI7EOPQvuCnK0ME=; b=okgn7Y3owqrt0r3CKgzifnpPUXZeZCEBOtzNa5TSO3pJymparm7ddkH2rCLuspZaKv +3sg3vs1ja6Ak/9IO3TUtHU99LGAqUQXgejOh0sP8wO4bUgUe/w7CBgKvz3M0k7QDUiq hsRGd3vSFPcu7A9L9QTArypYId0lLCcQCiyj3863PNxPwl/mVzhRHzWfjKkidEwUoc0J L7uaYPiWs8Za/9KVRRXaPOB3OEt461B/AN3My0cW9sFhRjN5dDn+rihKVGWhH4JAtgmt PDMzPPs0vWSLz+yswtQjO79TEykjN400+Gi0oCupCRZhPN9W9rVxs1znPaohOfTXrYVU FJBw== X-Gm-Message-State: ANhLgQ0ALPRamHrGIqxBozTtOGLwNGw9yLYxYpsQaWwrTy0MTB5Gw4G5 3oB5CAbI2SKpgAvXdUzp0gE4cw== X-Google-Smtp-Source: ADFU+vu6bvfxesOU9AguoQQ2yTyNVmKJCW8oR4oSVQnin4fkXmnK8mlGS93WLKLIinDLJYbIQny60Q== X-Received: by 2002:ac8:4659:: with SMTP id f25mr14091414qto.273.1583758668881; Mon, 09 Mar 2020 05:57:48 -0700 (PDT) Received: from ziepe.ca (hlfxns017vw-142-68-57-212.dhcp-dynamic.fibreop.ns.bellaliant.net. [142.68.57.212]) by smtp.gmail.com with ESMTPSA id x22sm870587qki.54.2020.03.09.05.57.48 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 09 Mar 2020 05:57:48 -0700 (PDT) Received: from jgg by mlx.ziepe.ca with local (Exim 4.90_1) (envelope-from ) id 1jBHyd-00087L-Pc; Mon, 09 Mar 2020 09:57:47 -0300 Date: Mon, 9 Mar 2020 09:57:47 -0300 From: Jason Gunthorpe To: syzbot Cc: bmt@zurich.ibm.com, dledford@redhat.com, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: possible deadlock in siw_create_listen Message-ID: <20200309125747.GP31668@ziepe.ca> References: <000000000000161ee805a039a49e@google.com> <000000000000002a8c05a0600814@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000002a8c05a0600814@google.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Sun, Mar 08, 2020 at 04:13:15PM -0700, syzbot wrote: > syzbot has found a reproducer for the following crash on: > > HEAD commit: 425c075d Merge branch 'tun-debug' > git tree: net-next > console output: https://syzkaller.appspot.com/x/log.txt?x=1531a0b1e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=598678fc6e800071 > dashboard link: https://syzkaller.appspot.com/bug?extid=3fbea977bd382a4e6140 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10e3df31e00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=163d0439e00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+3fbea977bd382a4e6140@syzkaller.appspotmail.com #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next Jason