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=-6.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 3B985C54FD0 for ; Sat, 25 Apr 2020 02:18:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1CA0B2084D for ; Sat, 25 Apr 2020 02:18:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587781129; bh=+/xVjrg1YQaMoG8G2O+p2JLhT90x00i5C4LT2gABEl8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=0tB6XVv9Qu4eOgMiFF89MTY1LKVPh9Fz8FPrTxD65St/ynE74PG1WWbj3IHBdCO5B nOqSdcKdr1kcDBkjWEVg5S9lyIml9E00fmlArrzmcCBCJCqD8mye136UHel40ITo0G Q5pm6RXkKTZmPigOEGaIx6C3V9DaTe5I8gc2X/q4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726102AbgDYCSq (ORCPT ); Fri, 24 Apr 2020 22:18:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:38834 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726032AbgDYCSq (ORCPT ); Fri, 24 Apr 2020 22:18:46 -0400 Received: from sol.localdomain (c-107-3-166-239.hsd1.ca.comcast.net [107.3.166.239]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9989320776; Sat, 25 Apr 2020 02:18:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587781126; bh=+/xVjrg1YQaMoG8G2O+p2JLhT90x00i5C4LT2gABEl8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=fmhczGs00Rlyc7NqWn3tSWDdPoAn2fELcXr+j64Kp8BATfKVtyLx6a9FhUYrtf9gf ZMxNlZRHyQ/hPXPlH5YoCj0cCPFl54Tz4uaorBXOwnNHP6Dw1lj4q8WL1hdopi1Ypr QotQbxp21x9SoVKRKVdxF0DushMOB9kWfUTTPrLo= Date: Fri, 24 Apr 2020 19:18:35 -0700 From: Eric Biggers To: syzbot Cc: dvyukov@google.com, gleb@kernel.org, gregkh@linuxfoundation.org, gwshan@linux.vnet.ibm.com, hpa@zytor.com, jslaby@suse.com, jslaby@suse.cz, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, mpe@ellerman.id.au, pbonzini@redhat.com, ruscur@russell.cc, stewart@linux.vnet.ibm.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Subject: Re: KASAN: use-after-free Read in tty_open Message-ID: <20200425021835.GA849@sol.localdomain> References: <000000000000dd04830598d50133@google.com> <0000000000002d42ee05a4127cfc@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000002d42ee05a4127cfc@google.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Fri, Apr 24, 2020 at 05:23:03PM -0700, syzbot wrote: > syzbot suspects this bug was fixed by commit: > > commit ca4463bf8438b403596edd0ec961ca0d4fbe0220 > Author: Eric Biggers > Date: Sun Mar 22 03:43:04 2020 +0000 > > vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11594fc8100000 > start commit: 07c4b9e9 Merge tag 'scsi-fixes' of git://git.kernel.org/pu.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=79f79de2a27d3e3d > dashboard link: https://syzkaller.appspot.com/bug?extid=9af6d43c1beabec8fd05 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=113886fae00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1263520ae00000 > > If the result looks correct, please mark the bug fixed by replying with: > > #syz fix: vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection #syz fix: vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console