netdev - Re: ipgre rss is broken since gro

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Message-ID: <CANn89iKE2RxRBWRuXGwjydQKjPLhPbcoZaJS5rcBKbJWWnL4ZQ@mail.gmail.com>
Date:	Sat, 8 Dec 2012 18:01:40 -0800
From:	Eric Dumazet <edumazet@...gle.com>
To:	Dmitry Kravkov <dmitry@...adcom.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: ipgre rss is broken since gro

On Sat, Dec 8, 2012 at 3:31 PM, Dmitry Kravkov <dmitry@...adcom.com> wrote:
> Here is the trace for a while:
>
> BUG: unable to handle kernel NULL pointer dereference at           (null)
> IP: [<ffffffff8144f35e>] skb_gro_receive+0xbe/0x5a0

Hi Dmitry

NULL pointer deref probably fixed on net tree (or Linus tree) by

http://git.kernel.org/?p=linux/kernel/git/davem/net.git;a=commit;h=c3c7c254b2e8cd99b0adf288c2a1bddacd7ba255

For the GRO stuff and RSS, I wonder if skbs have a property that makes
them dropped somewhere, you might try drop_monitor / drop_watch
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