netdev - Re: 3.8.4 kernel

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Date:	Mon, 6 May 2013 18:54:59 -0700
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	"Joseph A. Millikan" <josephamillikan@...il.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Huang, Xiong" <xiong@....qualcomm.com>,
	Cloud Ren <cjren@....qualcomm.com>,
	netdev <netdev@...r.kernel.org>
Subject: Re: 3.8.4 kernel

[+cc Xiong, Cloud, netdev since this looks like an atl1c issue]

On Fri, Apr 26, 2013 at 3:33 PM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> On Wed, Mar 27, 2013 at 3:46 PM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
>> On Wed, Mar 27, 2013 at 3:18 PM, Joseph A. Millikan
>> <josephamillikan@...il.com> wrote:
>>>
>>> We use Mint 11 32-bit and we've noticed with any kernel beyond 3.6.11, the
>>> Ethernet port stops responding to pings after 15 minutes and samba clients
>>> cease to receive data in realtime.  I hope this is the correct place to
>>> report this as we received a nasty, sullen response when posted with the
>>> Ubuntu folks (which we will NEVER do again.)
>>>
>>> If you aren't the proper party to whom we should direct this report, please
>>> disregard.  We were just trying to help developers if there is an
>>> undiscovered issue with Ethernet ports on Lenovo G770 laptops which our
>>> court uses with Mint 11.
>>
>> What specific kernels have you tried?  It'd be surprising if such an
>> egregious issue went unnoticed for long, but if recent kernels like
>> 3.8 or 3.9-rc are still broken, there's likely something we need to
>> fix.  Can you collect complete dmesg logs from 3.6.11 and the oldest
>> broken kernel you've found?  You might also run "watch cat
>> /proc/interrupts" in a window off to the side and see if the NIC
>> interrupt count stops increasing after 15 minutes.
>
> Did this ever get resolved?

I opened https://bugzilla.kernel.org/show_bug.cgi?id=57681 to keep
track of this and attached the dmesg logs you collected.  If you have
a chance, could you also collect and attach the output of "lspci -vv"
(any kernel is fine for this).

I don't see anything obvious wrong, at least from the PCI side.  Maybe
the atl1c guys will have some ideas.

Bjorn
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