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=-7.3 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,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 F20D2C432C0 for ; Thu, 21 Nov 2019 11:01:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C5E802075E for ; Thu, 21 Nov 2019 11:01:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="IJGLDRtN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726725AbfKULBT (ORCPT ); Thu, 21 Nov 2019 06:01:19 -0500 Received: from mail.skyhub.de ([5.9.137.197]:44042 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726165AbfKULBT (ORCPT ); Thu, 21 Nov 2019 06:01:19 -0500 Received: from zn.tnic (p200300EC2F0F07006553A4184595DC73.dip0.t-ipconnect.de [IPv6:2003:ec:2f0f:700:6553:a418:4595:dc73]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 047551EC0CE5; Thu, 21 Nov 2019 12:01:18 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1574334078; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=v4quCIZoYAeH9AtgG7hkOkf1XV0d+q0HOg7J8dsmhTs=; b=IJGLDRtNKeHjKRK9sDn1zK2Twyin9UrOzeX6HsVWdHm0pI0z6ZqVg/uOQB0LAhrFj8aIpn WoazlgciwPpvb7ff48IHuegvdtjS+4VEcNWqg/hD9zEC9JpxDAD9Z1bfubc8I+EVBRgQi/ D/DRWu/dIG31quJbMwfg7CFNCx1/cnw= Date: Thu, 21 Nov 2019 12:01:15 +0100 From: Borislav Petkov To: syzbot Cc: adobriyan@gmail.com, ak@linux.intel.com, bigeasy@linutronix.de, fenghua.yu@intel.com, frederic@kernel.org, hpa@zytor.com, keescook@chromium.org, kernelfans@gmail.com, len.brown@intel.com, linux-kernel@vger.kernel.org, longman@redhat.com, luto@kernel.org, mingo@redhat.com, peterz@infradead.org, rafael.j.wysocki@intel.com, riel@surriel.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, tim.c.chen@linux.intel.com, tonywwang-oc@zhaoxin.com, wang.yi59@zte.com.cn, x86@kernel.org Subject: Re: general protection fault in tss_update_io_bitmap Message-ID: <20191121110115.GC6540@zn.tnic> References: <0000000000004dccce0597d1967b@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <0000000000004dccce0597d1967b@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Spam: Yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Nov 20, 2019 at 05:55:09PM -0800, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 5d1131b4 Add linux-next specific files for 20191119 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=177979d2e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=b60c562d89e5a8df > dashboard link: https://syzkaller.appspot.com/bug?extid=81e6ff9d4cdb05fd4f5e > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1549ed8ce00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17f91012e00000 > > The bug was bisected to: > > commit 111e7b15cf10f6e973ccf537c70c66a5de539060 > Author: Thomas Gleixner > Date: Tue Nov 12 20:40:33 2019 +0000 > > x86/ioperm: Extend IOPL config to control ioperm() as well > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10490e86e00000 > final crash: https://syzkaller.appspot.com/x/report.txt?x=12490e86e00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=14490e86e00000 Try this: https://git.kernel.org/tip/e3cb0c7102f04c83bf1a7cb1d052e92749310b46 Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette