netdev - Re: 3.19-rc4: BUG: unable to handle kernel paging request at ffff880055f15000 ovs_packet_cmd

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Message-ID: <20150114130351.GB13716@breakpoint.cc>
Date:	Wed, 14 Jan 2015 14:03:51 +0100
From:	Florian Westphal <fw@...len.de>
To:	Thomas Graf <tgraf@...g.ch>
Cc:	Sander Eikelenboom <linux@...elenboom.it>,
	Pravin B Shelar <pshelar@...ira.com>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	dev@...nvswitch.org
Subject: Re: 3.19-rc4:  BUG: unable to handle kernel paging request at
 ffff880055f15000 ovs_packet_cmd_execute+0x1f/0x229

Thomas Graf <tgraf@...g.ch> wrote:
> Copying ovs-dev mailing list and thus qutoing full message.
> 
> On 01/14/15 at 01:14pm, Sander Eikelenboom wrote:
> > Hi,
> > 
> > I was testing 3.19-rc4 with openvswitch and encountered the splat below.
> 
> What version of OVS are you using? Did this work properly with rc3 or
> an older kernel?

seems like it was introduced via 05da5898a96c
(openvswitch: Add support for OVS_FLOW_ATTR_PROBE).

It adds test for OVS_FLOW_ATTR_PROBE to ovs_packet_cmd_execute() but
this function seems to only expect OVS_PACKET_ATTR_* (so we get
out-of-bounds access)?
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