Subject: Oops: 17 SMP ARM (v3.16-rc2)

From: [email-masked] (Iain Paton)
Date: Tue, 26 Aug 2014 14:11:51 +0100

On 25/08/14 11:18, Russell King - ARM Linux wrote:
> On Wed, Aug 13, 2014 at 01:39:27PM +0000, Mattis Lorentzon wrote:
>> All our tests seem to behave the same way on the Sabrelite as on our own board.
>> A working theory is that the switch (3Com Switch 4400) triggers the degeneration
>> of the network stack from which Linux does not seem to recover, even if we later
>> bypass the switch and directly connect the board to the server machine.
> 
> Please can you try something - what happens if you completely disable
> pause frame support (flow control) on all machines on the switch?

Russell, while trying to duplicate this I have flow-control disabled 
on the switch which leads to it being auto-negotiated off on all devices.
Do you think it could be worth turning it on and trying again?