netdev - Re: [Bug 199643] New: UBSAN: Undefined behaviour in ./include/net/route.h:240:2

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Message-Id: <20180607.201142.389815374334636334.davem@davemloft.net>
Date:   Thu, 07 Jun 2018 20:11:42 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     jakub.kicinski@...ronome.com
Cc:     dsahern@...il.com, stephen@...workplumber.org,
        netdev@...r.kernel.org
Subject: Re: [Bug 199643] New: UBSAN: Undefined behaviour in
 ./include/net/route.h:240:2

From: Jakub Kicinski <jakub.kicinski@...ronome.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... :-/