Re: atl1c issues on 3.8.2

["Michael Büsch" <m@bues.ch>]

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On Fri, 15 Mar 2013 00:06:02 +0100
Eric Dumazet <eric.dumazet@gmail.com> wrote:

> You could try various DEBUGing stuff, like CONFIG_DEBUG_PAGEALLOC and
> CONFIG_SLUB_DEBUG_ON

This bug is so weird, so I did some double-checking.
Just to minimize the mistakes on my side.
I compiled a kernel without the revert of the original commit
and without the skb fix you suggested.
It turns out that I am only able to reproduce the issue, if the ath9k interface is
up while testing the atl1c ethernet.
And I also double-checked that reverting the original commit fixes the issue.
No stalls with up or down ath9k then.
So that confirms my previous results.

I tried to enable pagealloc debug and slub debug on a kernel with the suggested skb
fix, but without the revert of the commit. Nothing special appeared
in the logs. I'm currently building a kernel with almost all debugging options
turned on. I will test that tomorrow.

Thanks for your help.

-- 
Michael

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