linux-kernel - Re: [ 105/124] af_unix: dont send SCM_CREDENTIAL when dest socket is NULL

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Message-ID: <1365003300.13853.25.camel@edumazet-glaptop>
Date:	Wed, 03 Apr 2013 08:35:00 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Sven Joachim <svenjoac@....de>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	Ding Tianhong <dingtianhong@...wei.com>,
	Eric Dumazet <edumazet@...gle.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [ 105/124] af_unix: dont send SCM_CREDENTIAL when dest socket
 is NULL

On Wed, 2013-04-03 at 17:10 +0200, Sven Joachim wrote:
> On 2013-04-03 16:00 +0200, Eric Dumazet wrote:

> 
> > It might be a wrong sender (application bug or bad identity), and udevd
> > correctly discards the incoming message.
> 
> How would I find out the culprit?

Change udevd to display the pid as well, and hopefully track the sender.

udevd receives uid and pid in the credentials.



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