netdev - Re: Stable request for 5882a07c72093d

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Message-ID: <CACviX4FkJ+kCqHAZ9O7pC1N_DpAhYfwySwp-Cw0AgAJcJH_9Dg@mail.gmail.com>
Date:	Mon, 23 Jun 2014 15:37:18 -0700
From:	Wei-Chun Chao <weichunc@...mgrid.com>
To:	chiluk@...onical.com
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	netdev <netdev@...r.kernel.org>, davem <davem@...emloft.net>
Subject: Re: Stable request for 5882a07c72093d

On Mon, Jun 23, 2014 at 10:35 AM, Dave Chiluk <chiluk@...onical.com> wrote:
> On 06/23/2014 11:18 AM, Eric Dumazet wrote:
>> On Mon, 2014-06-23 at 10:56 -0500, Dave Chiluk wrote:
>>> Commit 5882a07c72093dc3a18e2d2b129fb200686bb6ee remedies a BUG_ON in
>>> skb_segment.  This is hit reliably in clouds that are using openvswitch for
>>> network capabilities (which is the default network used by Openstack) on
>>> machines that have gso offload capabilities.
>>>
>>> This has already been reported multiple times to Canonical in numerous
>>> openstack clouds.  The fix has been integrated and tested in those clouds, and
>>> has been show to resolve their issues.
>>>
>>> Please include this patch for stable release.
>>>
>>> Thank you,
>>> Dave Chiluk
>>>
>>> The patch follows for convenience.
>>> --
>>
>> Both original commit and your request lack the bug origin.
>>
>> I wish bug submissions are more explicit in this regard, using
>>
>> Fixes: sha1-12digits ("title")
>>
>> It would save a lot of time for stable teams, and ease future bug
>> hunting as well.
>>
>>
> According to the initial thread, Wei-Chun determined it originated with
> 19acc327258a.  It has existed since 3.10-rc1.
>
> Fixes: 19acc327258a ("gso: Handle Trans-Ether-Bridging protocol in
> skb_network_protocol()")
>

Sorry I didn't include the bug origin in the original patch.

The issue was introduced by the combination of these two commits -
ec5f06156423 ("net: Kill link between CSUM and SG features.)
19acc327258a ("gso: Handle Trans-Ether-Bridging protocol in
skb_network_protocol()")

Thanks,
Weichun
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