From: Herbert Xu <herbert@gondor.apana.org.au>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: netdev@vger.kernel.org
Subject: Re: Fw: [Bug 99091] New: Kernel panic while sending network packets over TAP interface
Date: Fri, 29 May 2015 11:01:44 +0800 [thread overview]
Message-ID: <20150529030143.GA16290@gondor.apana.org.au> (raw)
In-Reply-To: <20150528073556.335fd7a3@urahara>
Stephen Hemminger <stephen@networkplumber.org> wrote:
>
> Our setup is designed specifically to cause the calling path "bridge transmit"
> - "VLAN transmit" - "bridge transmit" - "GRE or TAP transmit" as reflected by
> the crash dump. It appears that this sequence hits a race condition or a
> corrupted/uninitialized error queue in skb_queue_tail().
Your bug is simple. Somebody is setting skb->sk when they shouldn't.
Presumably it's whatever that injected the packet into your stack,
i.e., your NIC driver. So you should start looking for blame there.
Cheers,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
prev parent reply other threads:[~2015-05-29 3:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-28 14:35 Fw: [Bug 99091] New: Kernel panic while sending network packets over TAP interface Stephen Hemminger
2015-05-29 3:01 ` Herbert Xu [this message]
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