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=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 442F8C43218 for ; Mon, 10 Jun 2019 21:27:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1F05820859 for ; Mon, 10 Jun 2019 21:27:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390177AbfFJV1f (ORCPT ); Mon, 10 Jun 2019 17:27:35 -0400 Received: from out01.mta.xmission.com ([166.70.13.231]:58805 "EHLO out01.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389193AbfFJV1e (ORCPT ); Mon, 10 Jun 2019 17:27:34 -0400 Received: from in02.mta.xmission.com ([166.70.13.52]) by out01.mta.xmission.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.87) (envelope-from ) id 1haRpD-0007Ex-Hn; Mon, 10 Jun 2019 15:27:31 -0600 Received: from ip72-206-97-68.om.om.cox.net ([72.206.97.68] helo=x220.xmission.com) by in02.mta.xmission.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.87) (envelope-from ) id 1haRpC-0006xo-Kg; Mon, 10 Jun 2019 15:27:31 -0600 From: ebiederm@xmission.com (Eric W. Biederman) To: syzbot Cc: aarcange@redhat.com, akpm@linux-foundation.org, andrea.parri@amarulasolutions.com, ast@kernel.org, avagin@gmail.com, daniel@iogearbox.net, dbueso@suse.de, john.fastabend@gmail.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, oleg@redhat.com, prsood@codeaurora.org, syzkaller-bugs@googlegroups.com References: <000000000000c0d84e058ad677aa@google.com> Date: Mon, 10 Jun 2019 16:27:15 -0500 In-Reply-To: <000000000000c0d84e058ad677aa@google.com> (syzbot's message of "Sat, 08 Jun 2019 14:17:00 -0700") Message-ID: <87ftoh6si4.fsf@xmission.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-SPF: eid=1haRpC-0006xo-Kg;;;mid=<87ftoh6si4.fsf@xmission.com>;;;hst=in02.mta.xmission.com;;;ip=72.206.97.68;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX18S7yGkdj8GdsnV3+U9rf+Fa62sIZ/bY/0= X-SA-Exim-Connect-IP: 72.206.97.68 X-SA-Exim-Mail-From: ebiederm@xmission.com Subject: Re: general protection fault in mm_update_next_owner X-SA-Exim-Version: 4.2.1 (built Thu, 05 May 2016 13:38:54 -0600) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot writes: > syzbot has bisected this bug to: > > commit e9db4ef6bf4ca9894bb324c76e01b8f1a16b2650 > Author: John Fastabend > Date: Sat Jun 30 13:17:47 2018 +0000 > > bpf: sockhash fix omitted bucket lock in sock_close > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15e978e1a00000 > start commit: 38e406f6 Merge git://git.kernel.org/pub/scm/linux/kernel/g.. > git tree: net > final crash: https://syzkaller.appspot.com/x/report.txt?x=17e978e1a00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=13e978e1a00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=60564cb52ab29d5b > dashboard link: https://syzkaller.appspot.com/bug?extid=f625baafb9a1c4bfc3f6 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1193d81ea00000 > > Reported-by: syzbot+f625baafb9a1c4bfc3f6@syzkaller.appspotmail.com > Fixes: e9db4ef6bf4c ("bpf: sockhash fix omitted bucket lock in sock_close") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection How is mm_update_next_owner connected to bpf? Eric