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=-0.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 DE0E9C76195 for ; Sat, 20 Jul 2019 10:08:08 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B1F0320873 for ; Sat, 20 Jul 2019 10:08:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="K3jnP74G" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B1F0320873 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:To:From:Subject:Message-ID:In-Reply-To:Date: MIME-Version:Reply-To:Cc:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:References: List-Owner; bh=ZcpZzaLZzfNsUIvWyy4mKFKgo0sh4u9LpGCVu27YG+c=; b=K3jnP74GZWYMTC P954KwhDBweSbdCBrYnCIgnq21M1H7ZW+PDoLeij/dZjCBX0KDjy1HI3rZZRTGr3O4iPouU5XghYj NWAPj/QZy/nnEHDqTl77UFEX+qAS3z3LUb4Bj+qO/OfVoKfIgPz6LuE38R2V2nmyZKKWIcUnji0gp kNamHCCER9sGTw4b0C/G6gwGxrgiydxesxPLmyAp7QK5TTlRCNq1+pR70q1gNnWs1NrRowu1v5HZD mCDsDfC7XuqwEkObiA/bl6AVRQJZ1pxT+C0tvC1IOqclU4YscowctgQ4wcD7VGaBSJY/hHmxQvPdQ U7Y/Pwda9Ng+QbF0yWdw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1homHf-0003Y2-So; Sat, 20 Jul 2019 10:08:07 +0000 Received: from mail-io1-f71.google.com ([209.85.166.71]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1homHc-0003XF-Ch for linux-arm-kernel@lists.infradead.org; Sat, 20 Jul 2019 10:08:05 +0000 Received: by mail-io1-f71.google.com with SMTP id h4so37540341iol.5 for ; Sat, 20 Jul 2019 03:08:01 -0700 (PDT) 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=aIptGodPgqjQ+OCeW9XKeJdzrs6DHyh1FKeEsnaxVbM=; b=aBnTillpH1U5XZdpjXqOz+4YkWIJoTwtcB87wDnqW4VLWn2t4wO7SX5i+v4SkcS3jx kCi3S6pbwPGQJ9V8bBtg7Vh52SnWCdyDn6Gph/vXHaWJ/z5HlreCQBh5dWx6YE/xtHXQ u97k6JIKSsPqIX/coaEloQu/uTLPzzZ6rMUSuXxvIqTD4Xlckc5KsG+RKnaFcvnSZFj0 5g00pU8BtKq72ffOZG+rSwYtK6lW6IHPtdWhBhSmw7n3Fm+P6knaF1pZvDl2jqBHcxF7 cVEllTfEtfYm7lJPqFVQbhnVygeFW4Gk9hiDD0kDkJUyff5t+yWmN6VVZZbCnOXQFfi5 idCw== X-Gm-Message-State: APjAAAV7SWgHLhz7+EEfAsg1siVArnepUemzQmyyTOE92AeQR54w8O8Q IDRFowaVUj0TzED/k5b8jh3y/4drMO++nu8oYMbUbTxMhEsm X-Google-Smtp-Source: APXvYqxejQK5TJXgPG7zDzFOcVKgb6JtNNiEgaZkAwUZNQxIY+uT88/YtfjAsG3qEv0NnxidVHOC8aWEo8R9Py88FYjmq9+IoaCH MIME-Version: 1.0 X-Received: by 2002:a6b:f90f:: with SMTP id j15mr48006883iog.43.1563617280803; Sat, 20 Jul 2019 03:08:00 -0700 (PDT) Date: Sat, 20 Jul 2019 03:08:00 -0700 In-Reply-To: <0000000000008dd6bb058e006938@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000964b0d058e1a0483@google.com> Subject: Re: WARNING in __mmdrop From: syzbot To: aarcange@redhat.com, akpm@linux-foundation.org, christian@brauner.io, davem@davemloft.net, ebiederm@xmission.com, elena.reshetova@intel.com, guro@fb.com, hch@infradead.org, james.bottomley@hansenpartnership.com, jasowang@redhat.com, jglisse@redhat.com, keescook@chromium.org, ldv@altlinux.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-parisc@vger.kernel.org, luto@amacapital.net, mhocko@suse.com, mingo@kernel.org, mst@redhat.com, namit@vmware.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, wad@chromium.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190720_030804_434526_00509BE8 X-CRM114-Status: UNSURE ( 3.41 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed"; DelSp="yes" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org syzbot has bisected this bug to: commit 7f466032dc9e5a61217f22ea34b2df932786bbfc Author: Jason Wang Date: Fri May 24 08:12:18 2019 +0000 vhost: access vq metadata through kernel virtual address bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=149a8a20600000 start commit: 6d21a41b Add linux-next specific files for 20190718 git tree: linux-next final crash: https://syzkaller.appspot.com/x/report.txt?x=169a8a20600000 console output: https://syzkaller.appspot.com/x/log.txt?x=129a8a20600000 kernel config: https://syzkaller.appspot.com/x/.config?x=3430a151e1452331 dashboard link: https://syzkaller.appspot.com/bug?extid=e58112d71f77113ddb7b syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10139e68600000 Reported-by: syzbot+e58112d71f77113ddb7b@syzkaller.appspotmail.com Fixes: 7f466032dc9e ("vhost: access vq metadata through kernel virtual address") For information about bisection process see: https://goo.gl/tpsmEJ#bisection _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel