netdev - Re: mac80211 truesize bugs

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Message-Id: <1209639500.7067.0.camel@johannes.berg>
Date:	Thu, 01 May 2008 12:58:20 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	David Miller <davem@...emloft.net>
Cc:	herbert@...dor.apana.org.au, mb@...sch.de, netdev@...r.kernel.org,
	linux-wireless@...r.kernel.org
Subject: Re: mac80211 truesize bugs

On Thu, 2008-05-01 at 03:53 -0700, David Miller wrote:
> From: David Miller <davem@...emloft.net>
> Date: Thu, 01 May 2008 03:49:50 -0700 (PDT)
> 
> > I guess it's the pskb_expand_head() calls done by net/mac80211/tx.c
> > I suspect we'll need to orphan early in order to accomodate these
> > adjustments, otherwise socket memory buffer allocations will
> > be corrupted.
> 
> I think the mac80211 encryption paths on TX could be doing this as
> well, just something I noticed meanwhile.

Indeed. But then why did we never see this bug w/o monitor interfaces
and this reinjection?

johannes

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