From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [Bug 199643] New: UBSAN: Undefined behaviour in
 ./include/net/route.h:240:2
Date: Thu, 07 Jun 2018 20:11:42 -0400 (EDT)
Message-ID: <20180607.201142.389815374334636334.davem@davemloft.net>
References: <20180508.001251.2189714817072679386.davem@davemloft.net>
        <b0e36641-b84f-0bde-4c2d-125a412b5bb2@gmail.com>
        <20180607170623.6e5d56b5@cakuba.netronome.com>
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Cc: dsahern@gmail.com, stephen@networkplumber.org,
        netdev@vger.kernel.org
To: jakub.kicinski@netronome.com
Return-path: <netdev-owner@vger.kernel.org>
Received: from shards.monkeyblade.net ([184.105.139.130]:36314 "EHLO
        shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1752140AbeFHALo (ORCPT
        <rfc822;netdev@vger.kernel.org>); Thu, 7 Jun 2018 20:11:44 -0400
In-Reply-To: <20180607170623.6e5d56b5@cakuba.netronome.com>
Sender: netdev-owner@vger.kernel.org
List-ID: <netdev.vger.kernel.org>

From: Jakub Kicinski <jakub.kicinski@netronome.com>
Date: Thu, 7 Jun 2018 17:06:23 -0700

> [  293.213661]  ip_send_unicast_reply+0x1b67/0x1d0e

This calls ip_setup_cork() which can NULL out the 'rt' route
pointer.  Hmmm... :-/