Date: Tue, 24 Mar 2009 14:17:02 -0700 (PDT)
Message-Id: <20090324.141702.206697701.davem@davemloft.net>
To: mingo@elte.hu
Cc: herbert@gondor.apana.org.au, r.schwebel@pengutronix.de,
       torvalds@linux-foundation.org, blaschka@linux.vnet.ibm.com,
       tglx@linutronix.de, a.p.zijlstra@chello.nl,
       linux-kernel@vger.kernel.org, kernel@pengutronix.de
Subject: Re: Revert "gro: Fix legacy path napi_complete crash",
From: David Miller <davem@davemloft.net>
In-Reply-To: <20090324205444.GA11693@elte.hu>
References: <20090324160241.GA11060@elte.hu>
	<20090324191900.GA24595@elte.hu>
	<20090324205444.GA11693@elte.hu>
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From: Ingo Molnar <mingo@elte.hu>
Date: Tue, 24 Mar 2009 21:54:44 +0100

> * Ingo Molnar <mingo@elte.hu> wrote:
> 
> > > Same forcedeth box i reported before. Config below. (note: if 
> > > you want to use it you need to run it through 'make oldconfig', 
> > > with all defaults accepted)
> > 
> > Hm, i just had a test failure (hung interface) with this too.
> > 
> > I'll go back to the original straight revert of "303c6a0: gro: Fix 
> > legacy path napi_complete crash", and will test it overnight - to 
> > establish a baseline of stability again. (to make sure there are 
> > no other bugs interacting)
> 
> FYI, this plain revert is holding up fine in my tests so far - 50 
> random iterations - the previous one failed after 5 iterations.

Something must be up with respect to letting interrupts in during
certain windows of time, or similar.

I'll take a look at this and hopefully Herbert or myself will be
able to figure it out.
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