ACK: [PATCH Precise SRU] network problems after update to kernel 3.2.0-65 - thunderbird/imap/dovecot

Stefan Bader stefan.bader at canonical.com
Wed Jul 23 06:58:39 UTC 2014


On 23.07.2014 08:55, Stefan Bader wrote:
> On 23.07.2014 08:50, Stefan Bader wrote:
>> On 22.07.2014 20:43, Tim Gardner wrote:
>>> Looks like these stable updates caused regressions.
>>>
>>>
>>>
>> Based on the positive tester feedback in the bug.
> 
> Though there is also a reference to Debian where Ben reverted two patches. But I
> could not figure out which was the second one, yet.
> 
> -Stefan
> 
> 
> 
Searched harder...

Subject: Revert "net: ip, ipv6: handle gso skbs in forwarding path"

This reverts commit caa5344994778a2b4725b2d75c74430f76925e4a, which
was commit fe6cc55f3a9a053482a76f5a6b2257cee51b4663 upstream.  In 3.2,
the transport header length is not calculated in the forwarding path,
so skb_gso_network_seglen() returns an incorrect result.  We also have
problems due to the local_df flag not being set correctly.

There isn't a Debian bug report for this, but it needed a further
fix ("net: ipv4: ip_forward: fix inverted local_df test") which in
turn caused more obvious regressions (#754173).

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