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 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 E53A1C2BA19 for ; Mon, 13 Apr 2020 11:03:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B9C1320753 for ; Mon, 13 Apr 2020 11:03:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728877AbgDMLDG (ORCPT ); Mon, 13 Apr 2020 07:03:06 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:37199 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727870AbgDMLDF (ORCPT ); Mon, 13 Apr 2020 07:03:05 -0400 Received: by mail-il1-f199.google.com with SMTP id z14so3231120ilz.4 for ; Mon, 13 Apr 2020 04:03:04 -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=2IOvHbBUeIFh4zGFQjXxW5DQqukbUbAB0rjAVOkLv/w=; b=T1qc+3VMi04fFR6b9EEOYwZqfy3eAwJcjDqBD1NBZK4AVjH++VFsAwOQ6up5HTzno3 ZvxKqA4bHmHRmNKMtEhyxPoohvrfpYKJ8Xn3O0Xv7P320wRua7jZ4pmdeAM1OBqCceiN BGK0nDR7Z3lIVF1qlhW+XJ7hHY4AEB6mBaxpbPTSOxjeh32Ln3KcrCuX0OlVVZPrkJDD y4McKXregHfnZo447zp2pE8Y14YNDQNKjODQKCBsw3cnLG71IZZA07G+KwXDuFq9pOHh ul4G0JewjYxU3iZFtlxI+o1XCp2CNEWNmPD3acs+WeiYDeIMzpkru+0gJ25i/D8pvquJ QbxQ== X-Gm-Message-State: AGi0Pub+KlikDKGRFCd6nG8T/s9mSjmHJDCTJ4RMageWEh1puay8jx0u xBZSE8EHzDxl/xFrFjP3JaabGNUp2GZpVv1sf43NbYgJ1cHP X-Google-Smtp-Source: APiQypLicYJNdk15GuKhgeGZAg5xWK36DdcdM4+DwXTrzX3cEvE+bTGd6A8kvDoJZPtS1k1WvcOTKwpdKA0d2t1jNBkZKQ6dx5jB MIME-Version: 1.0 X-Received: by 2002:a92:d98c:: with SMTP id r12mr4971216iln.224.1586775784334; Mon, 13 Apr 2020 04:03:04 -0700 (PDT) Date: Mon, 13 Apr 2020 04:03:04 -0700 In-Reply-To: <0000000000003311fd05a327a060@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f6ae4905a32a0633@google.com> Subject: Re: KASAN: slab-out-of-bounds Read in gfn_to_memslot From: syzbot To: christoffer.dall@arm.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, maz@kernel.org, pbonzini@redhat.com, peterx@redhat.com, sean.j.christopherson@intel.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org syzbot has bisected this bug to: commit 36947254e5f981aeeedab1c7dfa35fc34d330e80 Author: Sean Christopherson Date: Tue Feb 18 21:07:32 2020 +0000 KVM: Dynamically size memslot array based on number of used slots bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1099775de00000 start commit: 4f8a3cc1 Merge tag 'x86-urgent-2020-04-12' of git://git.ke.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1299775de00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1499775de00000 kernel config: https://syzkaller.appspot.com/x/.config?x=3bfbde87e8e65624 dashboard link: https://syzkaller.appspot.com/bug?extid=2e0179e5185bcd5b9440 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13e78c7de00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14cf613fe00000 Reported-by: syzbot+2e0179e5185bcd5b9440@syzkaller.appspotmail.com Fixes: 36947254e5f9 ("KVM: Dynamically size memslot array based on number of used slots") For information about bisection process see: https://goo.gl/tpsmEJ#bisection