From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752191AbdLWJ7v (ORCPT ); Sat, 23 Dec 2017 04:59:51 -0500 Received: from mail-wm0-f48.google.com ([74.125.82.48]:37856 "EHLO mail-wm0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750752AbdLWJ7q (ORCPT ); Sat, 23 Dec 2017 04:59:46 -0500 X-Google-Smtp-Source: ACJfBovBc0mPQt1VwjJ0PJS+z6uUZV/hpm1LiJ+4rmWU3Zf8XOkmyBpX9omk6hPab4ZWDMbYBJlnbg== Subject: Re: BUG: unable to handle kernel paging request in ipcget To: syzbot , akpm@linux-foundation.org, dave@stgolabs.net, gregkh@linuxfoundation.org, guillaume.knispel@supersonicimagine.com, keescook@chromium.org, linux-kernel@vger.kernel.org, mhocko@suse.com, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com, syzkaller References: <001a114441286c0f4f0560fcf1d8@google.com> From: Manfred Spraul Message-ID: <0a265a34-edbb-cee7-9475-2d2f07432886@colorfullife.com> Date: Sat, 23 Dec 2017 10:59:43 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <001a114441286c0f4f0560fcf1d8@google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On 12/23/2017 08:33 AM, syzbot wrote: > Hello, > > syzkaller hit the following crash on > 6084b576dca2e898f5c101baef151f7bfdbb606d > git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > > Unfortunately, I don't have any reproducer for this bug yet. > Is one of the recent issues reproducible? Either something is wrong with the faster ipc_get, or the improved ipc_get makes issues in other areas visible. --     Manfred