netdev - Re: [Bugme-new] [Bug 16626] New: Machine hangs with EIP at skb_copy_and_csum

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Message-ID: <20100821080735.GA2409@del.dom.local>
Date:	Sat, 21 Aug 2010 10:07:35 +0200
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Plamen Petrov <pvp-lsts@...uni-ruse.bg>,
	Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org
Subject: Re: [Bugme-new] [Bug 16626] New: Machine hangs with EIP at
 skb_copy_and_csum_dev

On Sat, Aug 21, 2010 at 09:50:58AM +0200, Eric Dumazet wrote:
> Le samedi 21 août 2010 à 09:47 +0200, Jarek Poplawski a écrit :
> > On Fri, Aug 20, 2010 at 09:38:35PM +0200, Jarek Poplawski wrote:
> > > Plamen Petrov wrote, On 20.08.2010 12:53:
> > > > So, I guess its David and Herbert's turn?...
> > > 
> > > If you're bored in the meantime I'd suggest to do check the realtek
> > > driver eg:
> > > - for locking with the patch below,
> > > - to turn off with ethtool its tx-checksumming and/or scatter-gather,
> > 
> > After rethinking, it's almost impossible this patch could change
> > anything here, so don't bother, but consider mainly the second
> > proposal.
> > 
> > Jarek P.
> 
> Indeed ;)
> 
> Its true that not many nics use the skb_copy_and_csum_dev() helper,
> maybe this one must be updated somehow ?
> 
Yes, it seems it should be possible at least to handle the bug with
a warning and error return, considering Plamen's problems with getting
the trace.

Jarek P.
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