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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 01941C43142 for ; Tue, 31 Jul 2018 13:40:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 924C2208A2 for ; Tue, 31 Jul 2018 13:40:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 924C2208A2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=queasysnail.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732259AbeGaPUa (ORCPT ); Tue, 31 Jul 2018 11:20:30 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:36986 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1732127AbeGaPU3 (ORCPT ); Tue, 31 Jul 2018 11:20:29 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 284F287A70; Tue, 31 Jul 2018 13:40:06 +0000 (UTC) Received: from bistromath.localdomain (ovpn-204-30.brq.redhat.com [10.40.204.30]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A4837215670D; Tue, 31 Jul 2018 13:40:03 +0000 (UTC) Date: Tue, 31 Jul 2018 15:40:14 +0200 From: Sabrina Dubroca To: Eric Dumazet Cc: syzbot , christian.brauner@ubuntu.com, davem@davemloft.net, dsahern@gmail.com, fw@strlen.de, jbenc@redhat.com, ktkhai@virtuozzo.com, linux-kernel@vger.kernel.org, lucien.xin@gmail.com, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: KASAN: use-after-free Read in rtnetlink_put_metrics Message-ID: <20180731134014.GA32114@bistromath.localdomain> References: <0000000000004fe2be05724ac084@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Tue, 31 Jul 2018 13:40:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Tue, 31 Jul 2018 13:40:06 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'sd@queasysnail.net' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2018-07-31, 05:41:56 -0700, Eric Dumazet wrote: > > > On 07/31/2018 05:31 AM, syzbot wrote: > > Hello, > > > > syzbot found the following crash on: > > > > HEAD commit:    61f4b23769f0 netlink: Don't shift with UB on nlk->ngroups > > git tree:       net > > console output: https://syzkaller.appspot.com/x/log.txt?x=14a9de58400000 > > kernel config:  https://syzkaller.appspot.com/x/.config?x=ffb4428fdc82f93b > > dashboard link: https://syzkaller.appspot.com/bug?extid=41f9c04b50ef70c66947 > > compiler:       gcc (GCC) 8.0.1 20180413 (experimental) > > > > Unfortunately, I don't have any reproducer for this crash yet. [...] > Probably also caused by : > > > commit df18b50448fab1dff093731dfd0e25e77e1afcd1 > Author: Sabrina Dubroca > Date: Mon Jul 30 16:23:10 2018 +0200 > > net/ipv6: fix metrics leak Yeah, I'm looking into both those reports :/ -- Sabrina