Re: 3.7.8/amd64 full interrupt hangs due to iwlwifi under big nfs copies out

Marc MERLIN
2013-02-19T16:18:39Z

On Tue, Feb 19, 2013 at 11:03:41AM +0100, Johannes Berg wrote:
> On Mon, 2013-02-18 at 21:17 -0800, Eric Dumazet wrote:
>
> > > chrome: page allocation failure: order:1, mode:0x4020
> > > Pid: 8730, comm: chrome Tainted: G O 3.7.8-amd64-preempt-20121226-fixwd #1
> > > Call Trace:
> > > <IRQ> [<ffffffff810d5f38>] warn_alloc_failed+0x117/0x12c
>
> > You could try to load iwlwifi with amsdu_size_8K set to 0 (disable)
> >
> > It should hopefully use order-0 pages
>
> It will, do that then, unfortunately it can't switch at runtime because
> it advertised this support to the access point or clients.

Forgive the newbie question: would the inability to get pages cause
interrupts to be disabled or at least something that would stop the mouse
cursor and the keyboard from working?

Thanks,
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/