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

From: Iain Paton
Date: Tue Aug 26 2014 - 09:11:59 EST

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?

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