linux-kernel - Re: net: nfc: BUG and panic in accept() on 3.5-rc2

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Message-ID: <20120611194946.GA22557@sortiz-mobl>
Date:	Mon, 11 Jun 2012 21:49:46 +0200
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	Dave Jones <davej@...hat.com>,
	Sasha Levin <levinsasha928@...il.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	David Miller <davem@...emloft.net>,
	lauro.venancio@...nbossa.org, aloisio.almeida@...nbossa.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	linux-wireless <linux-wireless@...r.kernel.org>
Subject: Re: net: nfc: BUG and panic in accept() on 3.5-rc2

Hi Dave,

On Mon, Jun 11, 2012 at 01:25:45PM -0400, Dave Jones wrote:
> On Mon, Jun 11, 2012 at 06:56:50PM +0200, Sasha Levin wrote:
> 
>  > > > > > > What's trinity ?
>  > > > > > > Also, if this one is reproducible, would you mind sharing some details about
>  > > > > > > how we could reproduce it ?
>  > > > > > 
>  > > > > > Well, bugfix should be trivial enough ;)
>  > > > > Yep, I looked at the code only after looking at Sasha's report.
>  > > > > 
>  > > > > Thanks for the patch, do you mind if I add your SOB to it ?
>  > > > 
>  > > > I  would prefer making sure it fixes the bug first ;)
>  > > Sure, although your patch makes sense regardless of that :)
>  > > I'll still wait for Sasha to confirm that it fixes his crash.
>  > 
>  > I don't have a direct way of reproducing it, but I've put it in the test
>  > vm and the fuzzer is running, I'll let you know tomorrow if it happened
>  > again.
> 
> You might be able to trigger it faster by using -P PF_NFC, which will 
> force trinity to only use NFC sockets.
> 
> sidenote: most protocols trigger the module to be auto-loaded when a socket
> is created. This doesn't seem to happen with nfc, making me need to manually
> modprobe it first. Intentional ?
No, I'm missing the MODULE_ALIAS_NETPROTO() call for NFC. Thanks for the
report.

Cheers,
Samuel.

-- 
Intel Open Source Technology Centre
http://oss.intel.com/
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