On Wed, 2016-05-18 at 06:20 -0600, Reinoud Koornstra wrote:
> On Wed, May 18, 2016 at 4:51 AM, Coelho, Luciano
> <luciano.coelho@xxxxxxxxx> wrote:
> >
> > Hi Emmanuel, Linus,
> >
> >
> > On Wed, 2016-05-18 at 06:37 +0300, Emmanuel Grumbach wrote:
> > >
> > > On Wed, May 18, 2016 at 4:00 AM, Linus Torvalds
> > > <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> > > >
> > > >
> > > > On Tue, May 17, 2016 at 12:11 PM, David Miller <davem@davemloft
> > > > .net
> > > > >
> > > > > wrote:
> > > > >
> > > > >
> > > > > Highlights:
> > > > Lowlights:
> > > >
> > > > 1) the iwlwifi driver seems to be broken
> > > >
> > > > My laptop that uses the intel 7680 iwlwifi module no longer
> > > > connects
> > > > to the network. It fails with a "Microcode SW error detected."
> > > > and
> > > > spews out register state over and over again.
> > > Can we have the register state and the ASSERT / NMI / whatever
> > > that
> > > goes along with it?
> > > This clearly means that the firmware is crashing, but I don't
> > > know
> > > why,
> > > I copied here the lines that I need from another bug with another
> > > device with another firmware,
> > > but the log that we will still explain what I need:
> > I managed to reproduce this bug locally with Linus' master. I'm
> > investigating the cause and I'll let you how it goes.
> I did run the latest git code as well 4.6+
> iwlwifi went pearshape in my case as well.
> I just updated the microcode as well, it didn't matter.
> 4.6-rc7 works fine and no errors are reported with iwlwifi.
>
> Here's output that might come in handy
Thanks! That is helpful.
Since you say that 4.6-rc7 works but 4.6 doesn't, the prime suspect is
commit 5c08b0f5026f ("iwlwifi: mvm: don't override the rate with the
AMSDU len"), which is the only iwlwifi patch between those two
releases.
Could you try to revert that and see if the error is gone?
--
Cheers,
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