Re: [PATCH 0/2] fix kernel crash with macvtap on top of LRO

[Ben Hutchings]

On Thu, 2013-02-07 at 01:02 +0200, Michael S. Tsirkin wrote:
> At the moment, macvtap crashes are observed if macvtap is attached
> to an interface with LRO enabled.
> The crash in question is BUG() in macvtap_skb_to_vnet_hdr.
> This happens because several drivers set gso_size but not gso_type
> in incoming skbs.
> The following patches fix this for
> Additionally, cbf1de72324a8105ddcc3d9ce9acbc613faea17e is required
> to fix this for broadcom - would it make sense to cherry-pick
> this patch into 3.8?
> 
> I tested that the patch fixes the crash for ixgbe but
> don't have qlogic hardware to fix.  I also only tested TCP.
> 
> Feedback wellcome.

If we want to allow forwarding from LRO then net/ipv4/inet_lro.c also
needs to set gso_type.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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