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=-7.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 4E0A1C2D0EC for ; Fri, 10 Apr 2020 17:54:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2763F207FF for ; Fri, 10 Apr 2020 17:54:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726741AbgDJRyN (ORCPT ); Fri, 10 Apr 2020 13:54:13 -0400 Received: from mga17.intel.com ([192.55.52.151]:61501 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726142AbgDJRyN (ORCPT ); Fri, 10 Apr 2020 13:54:13 -0400 IronPort-SDR: C+V99/oI6XeSAUdOGcX9f3f1gbSqfn9sPv77VUpWzc+BCn+vhzyBGy/pz9nvuEco9lysCXxfcC D0ex5ZBh8u2A== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Apr 2020 10:54:13 -0700 IronPort-SDR: IkWAVfa693E8PfEMFbfR332OxsnjzmMMOXi/Uu9d/IaQwFCZ/KXXQSWeDiKeFpL8z2CXuCBUU8 /tyqr0RXijew== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,367,1580803200"; d="scan'208";a="331238836" Received: from sjchrist-coffee.jf.intel.com (HELO linux.intel.com) ([10.54.74.202]) by orsmga001.jf.intel.com with ESMTP; 10 Apr 2020 10:54:13 -0700 Date: Fri, 10 Apr 2020 10:54:13 -0700 From: Sean Christopherson To: syzbot Cc: christoffer.dall@arm.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, peterx@redhat.com, syzkaller-bugs@googlegroups.com Subject: Re: KASAN: slab-out-of-bounds Read in gfn_to_hva Message-ID: <20200410175412.GF22482@linux.intel.com> References: <00000000000095762005a2f25f4d@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00000000000095762005a2f25f4d@google.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 10, 2020 at 09:39:12AM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 5d30bcac Merge tag '9p-for-5.7-2' of git://github.com/mart.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=17243a9fe00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=2a7f60f3313b353e > dashboard link: https://syzkaller.appspot.com/bug?extid=e06e0f40470ee2de4dda > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12b059afe00000 > > The bug was bisected to: > > commit 5c0b4f3d5ccc2ced94b01c3256db1cf79dc95b81 > Author: Sean Christopherson > Date: Tue Feb 18 21:07:26 2020 +0000 > > KVM: Move memslot deletion to helper function > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13d14de7e00000 > final crash: https://syzkaller.appspot.com/x/report.txt?x=10314de7e00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=17d14de7e00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+e06e0f40470ee2de4dda@syzkaller.appspotmail.com > Fixes: 5c0b4f3d5ccc ("KVM: Move memslot deletion to helper function") #syz dup: KASAN: slab-out-of-bounds Read in __kvm_gfn_to_hva_cache_init