From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030928AbeBNOkK (ORCPT ); Wed, 14 Feb 2018 09:40:10 -0500 Received: from www62.your-server.de ([213.133.104.62]:49483 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030907AbeBNOkI (ORCPT ); Wed, 14 Feb 2018 09:40:08 -0500 Subject: Re: WARNING: kmalloc bug in bpf_prog_array_copy_info From: Daniel Borkmann To: syzbot , ast@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <001a11452e225976de056520c7b3@google.com> <1171a3b4-67b2-dc8b-af87-d9378d42ab4c@iogearbox.net> Message-ID: <146902fb-3f03-b8dd-1c3c-88fcdeb6e2af@iogearbox.net> Date: Wed, 14 Feb 2018 15:40:06 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: <1171a3b4-67b2-dc8b-af87-d9378d42ab4c@iogearbox.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Authenticated-Sender: daniel@iogearbox.net Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/14/2018 01:36 PM, Daniel Borkmann wrote: > On 02/14/2018 12:59 AM, syzbot wrote: >> Hello, >> >> syzbot hit the following crash on bpf-next commit >> 7928b2cbe55b2a410a0f5c1f154610059c57b1b2 (Sun Feb 11 23:04:29 2018 +0000) >> Linux 4.16-rc1 >> >> So far this crash happened 362 times on bpf-next. >> C reproducer is attached. >> syzkaller reproducer is attached. >> Raw console output is attached. >> compiler: gcc (GCC) 7.1.1 20170620 >> .config is attached. > > Will send a fix for this in a bit. (http://patchwork.ozlabs.org/patch/873373/) #syz fix: bpf: fix bpf_prog_array_copy_to_user warning from perf event prog query