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=ham 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 B68CAC10F27 for ; Mon, 9 Mar 2020 17:18:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 84F9D20828 for ; Mon, 9 Mar 2020 17:18:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ziepe.ca header.i=@ziepe.ca header.b="EYIG8iOV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727323AbgCIRSD (ORCPT ); Mon, 9 Mar 2020 13:18:03 -0400 Received: from mail-qk1-f196.google.com ([209.85.222.196]:40581 "EHLO mail-qk1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727101AbgCIRSD (ORCPT ); Mon, 9 Mar 2020 13:18:03 -0400 Received: by mail-qk1-f196.google.com with SMTP id m2so9975142qka.7 for ; Mon, 09 Mar 2020 10:18:02 -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=nToBEoh6tfWiB/VJHVs7IOJAt3gO0xfBje1E0nagTRA=; b=EYIG8iOVqclVWrFhVXS1LbD/gapSJHWQ4ayOkaZRvtQTKYr9UK2xUdoVgszQXVi90e WBLg3xg6U5d26DF8nXf2sbwTapCDa5WqkHNXpS23HjSN/yWegSvMmt9iN+EAm7VKpD+n xuWVOXMWpnL9U5AIgybU2Si9GazQKQ5UwuXJq7sowl2MDIOOi5Gp7S3EJIO9pMFlnO+z YB0v3nTcMjiHCaAD/Vj3AUr2JmzafkrCV5xKgtjvxFwqlhGyza05NZs7t/9PvJFq7mpf a+e7jOKOflfAqFj+glsfCycp/G6HepllRX5gvbSOthVUilBdnmNIQ3RDDzr2hgSSY5IR 3hwA== 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=nToBEoh6tfWiB/VJHVs7IOJAt3gO0xfBje1E0nagTRA=; b=DiDzLejX8LVgBhu3SSHW5+6DD54iI5kZ4ywFyRd8oOSM6I7612lxrLPqoobzNCUZkq I0e6uSjlANcSohxc/UL+NnfGlEnuFbpc26vmKr0ivugUByxJ1afMm8tcf5Zv3hXyMFoL jLl4p4ED/MLbfQjNg98bbH2TaKNF4CMy2RhnPboIum63g5B+V6chH54KnBfvfVL3+Y0u 9D3SHPM0rnspACxGp3eVVrSvQcIPTafKOMtSupgQqhFykvJ23mPjqnis3xT2TnzWtbg7 dpm4sNJokCI2e8X+lRPhQswLsF0/sbIvqKliOrFoEH670Pyb/Wc6RY951dQmp1OSFh4e E37Q== X-Gm-Message-State: ANhLgQ2c0d0hYbL9VJn+28DtLT92xpJ9zvYNwCGbnJgXufj6fTchlk/g 3fQD6P3ZTkLZ6D19F98Fs62VfA== X-Google-Smtp-Source: ADFU+vvWwdJIJlZ9GMGzucSugkOew68wrWEBXrrrFGFgTMIv3CcZ/+wvcwW3CEBRD6Lvq5mqU8qN5Q== X-Received: by 2002:a37:b042:: with SMTP id z63mr10282439qke.269.1583774281941; Mon, 09 Mar 2020 10:18:01 -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 z11sm4966506qti.23.2020.03.09.10.18.01 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 09 Mar 2020 10:18:01 -0700 (PDT) Received: from jgg by mlx.ziepe.ca with local (Exim 4.90_1) (envelope-from ) id 1jBM2S-0003az-R2; Mon, 09 Mar 2020 14:18:00 -0300 Date: Mon, 9 Mar 2020 14:18:00 -0300 From: Jason Gunthorpe To: syzbot Cc: chuck.lever@oracle.com, dledford@redhat.com, leon@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, parav@mellanox.com, syzkaller-bugs@googlegroups.com Subject: Re: BUG: corrupted list in cma_listen_on_dev Message-ID: <20200309171800.GR31668@ziepe.ca> References: <20200304135649.GE31668@ziepe.ca> <0000000000003406b805a0378b77@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000003406b805a0378b77@google.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 06, 2020 at 02:55:02PM -0800, syzbot wrote: > Hello, > > syzbot has tested the proposed patch and the reproducer did not trigger crash: > > Reported-and-tested-by: syzbot+2b10b240fbbed30f10fb@syzkaller.appspotmail.com > > Tested on: > > commit: 5e29d144 RDMA/mlx5: Prevent UMR usage with RO only when we.. > git tree: git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next > kernel config: https://syzkaller.appspot.com/x/.config?x=6d613b606deeaad7 > dashboard link: https://syzkaller.appspot.com/bug?extid=2b10b240fbbed30f10fb > compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) > > Note: testing is done by a robot and is best-effort only. #syz dup KASAN: use-after-free Read in rdma_listen (2)