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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 CF2B4C76195 for ; Fri, 19 Jul 2019 20:04:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B22392186A for ; Fri, 19 Jul 2019 20:04:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731137AbfGSUEB (ORCPT ); Fri, 19 Jul 2019 16:04:01 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:50085 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728724AbfGSUEB (ORCPT ); Fri, 19 Jul 2019 16:04:01 -0400 Received: by mail-io1-f72.google.com with SMTP id x24so35747066ioh.16 for ; Fri, 19 Jul 2019 13:04:00 -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=aPsM7izy0lsHgieRMKZNuSLjrGTa3/1dak1h6g1FuBU=; b=tsk104qnlkrWoTH+rEEPHuV4krvhQkOINz9B/67isAhv8ab1ZZSaFTkOdeRk0bh9yS vpMWMCOEu4FheoIgchnym2WiyRgaYqDVRJ3hMNKqJZyX07O6Yk/im4UaqvDIHXOhhj5n gnrpUKNFZT5t4zjryHetKHw+TA2Eqg9lLPvfcsedjPgJ1T7cetNYB/114PuSeOlHbRIS 1oW+acXpWBOpO/PkIi8+379WS2xhaPaW/PAgjm03yyxJWMCG9FAuBzBVeS1pR6rG7oEE 0iUQVVC8Aft3s9ieRKxas3OknXqWS8QA3smdJouHXUeiSjoqq7MLpGLC36uRoelE9XWW 3SLQ== X-Gm-Message-State: APjAAAVTgXyaXRwvYEEpEhfqZP1SkGv52ssukVa8zvW4dV1nBSrg8fCT UKF9qUVA3JkFB/dX+QXqJwlrT7C0I5AafLdNmxueIF35NCec X-Google-Smtp-Source: APXvYqxidYggLhCDlKDPPoGD3FSWeBWxwtOzAyrvnQyzo3ixpa+XRzwDjKZfxioOdAVAMIp4fTiorW0EVPKAU++mh06/cyXjSy0g MIME-Version: 1.0 X-Received: by 2002:a5d:87c6:: with SMTP id q6mr29436327ios.115.1563566640206; Fri, 19 Jul 2019 13:04:00 -0700 (PDT) Date: Fri, 19 Jul 2019 13:04:00 -0700 In-Reply-To: <00000000000045e7a1058e02458a@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002c183d058e0e3abd@google.com> Subject: Re: KASAN: use-after-free Write in tlb_finish_mmu From: syzbot To: aarcange@redhat.com, davem@davemloft.net, hch@infradead.org, james.bottomley@hansenpartnership.com, jasowang@redhat.com, jglisse@redhat.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-parisc@vger.kernel.org, mst@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.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=11642a58600000 start commit: 22051d9c Merge tag 'platform-drivers-x86-v5.3-2' of git://.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=13642a58600000 console output: https://syzkaller.appspot.com/x/log.txt?x=15642a58600000 kernel config: https://syzkaller.appspot.com/x/.config?x=d831b9cbe82e79e4 dashboard link: https://syzkaller.appspot.com/bug?extid=8267e9af795434ffadad userspace arch: i386 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d58784600000 Reported-by: syzbot+8267e9af795434ffadad@syzkaller.appspotmail.com Fixes: 7f466032dc9e ("vhost: access vq metadata through kernel virtual address") For information about bisection process see: https://goo.gl/tpsmEJ#bisection