help fixing speakup hang problem w smp kernels

[Okash Khawaja]

Hi Kelly,

Thanks very much for pointing this out :) If you could capture kernel
dump of this hang that will be a great starting point of the
investigation.

Best regards,
Okash

On Sun, Sep 8, 2019 at 3:24 PM Kelly Prescott <kprescott at coolip.net> wrote:
>
> I will start with the disclaimer that I know a little C, but I am by no
> means a kernel developer nor any other kind of developer.
> I do it for fun or on small projects I need for myself.
>
> I have noticed that now that ArchLinux has moved to the Linux 5.x series,
> my system seems to hang with speakup much more than it ever did before.
> I do not get the frequent hangs on my Ubuntu 16,4 and 18.4 systems.
> I get them, just not as frequently.
> I now have 3 archlinux machines, 2 laptops and one desktop where I can
> make the machine hang with in 5 minutes of trying.
> I do this by making sure the machine is busy doing something, network
> activity, logging etc. Then I opena large file and review the screen with
> Speakup making my keystrokes faster and faster until the machine hangs.
> It is also interesting that in my desktop machine when I installed a
> 4-port network card, the hangs became so bad I had to take it out.
> When I ran the machine without speakup, they went away, so It was not the
> network card.
>
> Like I said, I can now reliably produce a hang.
> I know I am not qualified to fix it, but I would like to offer my
> assistance in providing dumps to assist others in helping find the
> problem.'
>
> I am going to try to get the dumps logged to a serial console and then
> saved to files.
> With that said, What information do I need to provide to make this
> meaningful.
> What I would like is some instruction and pointers so I can accurately
> help and not just put out useless noise.
>
> As we move toward taking the kernel out of staging, I think we need to fix
> this as it results in a total hang of the machine.
>
> I am willing to grant machine access, make and send crash information, run
> tests, or anything else I can do to help get this resolved.
>
> If someone will reply with what needs to be done from my side, I would be
> happy to get started.
>
> Thanks.
>
> -- Kelly Prescott
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