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 48429C18E5A for ; Mon, 9 Mar 2020 17:24:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2181C208C3 for ; Mon, 9 Mar 2020 17:24:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ziepe.ca header.i=@ziepe.ca header.b="Z1I5JDhf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727262AbgCIRYd (ORCPT ); Mon, 9 Mar 2020 13:24:33 -0400 Received: from mail-qt1-f196.google.com ([209.85.160.196]:40582 "EHLO mail-qt1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727220AbgCIRYd (ORCPT ); Mon, 9 Mar 2020 13:24:33 -0400 Received: by mail-qt1-f196.google.com with SMTP id n5so3976153qtv.7 for ; Mon, 09 Mar 2020 10:24:32 -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=Dks3i5CkPUQ+F21OaKeehSuQxnIMN5i6J4CZW2sJwAg=; b=Z1I5JDhf6JPhDANs9LT2Z75zZ40ZGN96qONEEs10yb0Ydwt4AEpMbjVOaeuaW34y7k GqOkGV45kEzToTEqCGNkwEq1QeOqi4dDDHah5nA8iyUC2ScAqMAxnaqVdHOdMN3hZPxG 2Qsf+M/UTcKvSIQpHYPmEus0QOM0y8nEFk8Dlm5gkRlNndfHf4+9j0vmSAS9Lu2A+2XL tvhnWXmeyf/OCf9e6X86IoH8nbboyUD9rOmHnXF+d4NpKsKX2A43AOMnvSj6In7BZ03g a1/4l1wDim/oN+5Wy9N2OFsrPVofgre+pPaJv+6WtYFsn2Qx1tXEdZAX1g0wnAK/lCmd zHwA== 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=Dks3i5CkPUQ+F21OaKeehSuQxnIMN5i6J4CZW2sJwAg=; b=r8pcryFyTsYoaFGqCgVuBIy8MpjEO5wddSRkFk/V9lu1ucUlKkgHCuHBUupro5e1yC 7QByh+Q8fSoFthtOQfwLLi0Q+WickSOTxMifbQdoRJbjZ1bckv1kKK5egVFay6RzhOf8 NHUzd5oskCmtG9vdzoCYWkOwa1lOoj+c/h8DLJ1mlzZH85fn0u/1kAxkRs9IsO/rG/FM 54bZ62MOz6gxFIM/nvHasB1uDkEGpkmtFyJRRZ1Dc8jx6sPPX2u4RY9vScheJ1PJ5J7x EEUvdKsjPfk72g4p7Kmcb2Oabotbc2BoH9uPy+oZJnVhCNM7Zcn1DqBFVluODmkae2YE /XVw== X-Gm-Message-State: ANhLgQ1u4lENcFik832hVDO1udmkUSfZpwm/Mf/cOStTmTrWOwdnQQ0f VuGOhTUhkIt7w90smoVHc7Jy5g== X-Google-Smtp-Source: ADFU+vupi9qtS7gHPWD88xYrZVl3D06G7ygMTFq1jcL4wqzVIfcwn3v7Dhs/5Q1X9cbt2cRgCDPPNw== X-Received: by 2002:ac8:2bcd:: with SMTP id n13mr15638628qtn.21.1583774672271; Mon, 09 Mar 2020 10:24:32 -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 65sm22838452qtf.95.2020.03.09.10.24.31 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 09 Mar 2020 10:24:31 -0700 (PDT) Received: from jgg by mlx.ziepe.ca with local (Exim 4.90_1) (envelope-from ) id 1jBM8k-0003l3-Um; Mon, 09 Mar 2020 14:24:30 -0300 Date: Mon, 9 Mar 2020 14:24:30 -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, willy@infradead.org Subject: Re: BUG: corrupted list in _cma_attach_to_dev Message-ID: <20200309172430.GV31668@ziepe.ca> References: <000000000000cfed90059fcfdccb@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000cfed90059fcfdccb@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 01, 2020 at 11:13:15AM -0800, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 63623fd4 Merge tag 'for-linus' of git://git.kernel.org/pub.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=16a8fa81e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=9833e26bab355358 > dashboard link: https://syzkaller.appspot.com/bug?extid=06b50ee4a9bd73e8b89f > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14e804f9e00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15d6fd29e00000 #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next