* help fixing speakup hang problem w smp kernels
@ Kelly Prescott
` Okash Khawaja
0 siblings, 1 reply; 6+ messages in thread
From: Kelly Prescott @ UTC (permalink / raw)
To: Speakup is a screen review system for Linux.
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
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: help fixing speakup hang problem w smp kernels
help fixing speakup hang problem w smp kernels Kelly Prescott
@ ` Okash Khawaja
` Chris Brannon
` Kelly Prescott
0 siblings, 2 replies; 6+ messages in thread
From: Okash Khawaja @ UTC (permalink / raw)
To: Speakup is a screen review system for Linux., kprescott
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@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
> _______________________________________________
> Speakup mailing list
> Speakup@linux-speakup.org
> http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: help fixing speakup hang problem w smp kernels
` Okash Khawaja
@ ` Chris Brannon
` Okash Khawaja
` Kelly Prescott
1 sibling, 1 reply; 6+ messages in thread
From: Chris Brannon @ UTC (permalink / raw)
To: Speakup is a screen review system for Linux.
Okash Khawaja <okash.khawaja@gmail.com> writes:
> 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.
Quite plausibly the hangs reported by Kelly are the same as those
experienced by the person who reported in on IRC. Deedra posted a link
to the dump from one of those yesterday. Others in the Arch community
are noticing the same issue. As far as I know, everyone who has
reported about recent hangs is using a 5.2 kernel.
For those on Arch, switching to the linux-lts package (4.19 kernel) will
fix it for now.
-- Chris
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: help fixing speakup hang problem w smp kernels
` Okash Khawaja
` Chris Brannon
@ ` Kelly Prescott
1 sibling, 0 replies; 6+ messages in thread
From: Kelly Prescott @ UTC (permalink / raw)
To: Speakup is a screen review system for Linux.; +Cc: kprescott
K, I will get on it.
Thanks.
On Tue, 17 Sep 2019, Okash Khawaja wrote:
> 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@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
>> _______________________________________________
>> Speakup mailing list
>> Speakup@linux-speakup.org
>> http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup
> _______________________________________________
> Speakup mailing list
> Speakup@linux-speakup.org
> http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: help fixing speakup hang problem w smp kernels
` Chris Brannon
@ ` Okash Khawaja
` Okash Khawaja
0 siblings, 1 reply; 6+ messages in thread
From: Okash Khawaja @ UTC (permalink / raw)
To: Speakup is a screen review system for Linux.
On Tue, 17 Sep 2019, 23:33 Chris Brannon, <chris@the-brannons.com> wrote:
> Okash Khawaja <okash.khawaja@gmail.com> writes:
>
> > 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.
>
> Quite plausibly the hangs reported by Kelly are the same as those
> experienced by the person who reported in on IRC. Deedra posted a link
> to the dump from one of those yesterday. Others in the Arch community
> are noticing the same issue. As far as I know, everyone who has
> reported about recent hangs is using a 5.2 kernel.
>
> For those on Arch, switching to the linux-lts package (4.19 kernel) will
> fix it for now.
>
Hi,
I haven't yet got round to looking at it. But I've created this bug which
collects relevant info in one place:
https://github.com/bytefire/speakup/issues/10
Thanks,
Okash
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: help fixing speakup hang problem w smp kernels
` Okash Khawaja
@ ` Okash Khawaja
0 siblings, 0 replies; 6+ messages in thread
From: Okash Khawaja @ UTC (permalink / raw)
To: kprescott, deedra Waters
Cc: Speakup is a screen review system for Linux., Samuel Thibault
Hi,
Would it be possible to supply vmlinux file with debug symbols? If
speakup was out of kernel then speakup.ko and speakup_soft.ko with
debug symbols.
In general, the stack trace only tells part of the story. As Samuel
pointed out here [1] we also need corresponding binaries to know the
point of failure.
Thanks,
Okash
[1] https://github.com/bytefire/speakup/issues/10#issuecomment-548924921
On Wed, Oct 2, 2019 at 9:31 AM Okash Khawaja <okash.khawaja@gmail.com> wrote:
>
>
>
> On Tue, 17 Sep 2019, 23:33 Chris Brannon, <chris@the-brannons.com> wrote:
>>
>> Okash Khawaja <okash.khawaja@gmail.com> writes:
>>
>> > 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.
>>
>> Quite plausibly the hangs reported by Kelly are the same as those
>> experienced by the person who reported in on IRC. Deedra posted a link
>> to the dump from one of those yesterday. Others in the Arch community
>> are noticing the same issue. As far as I know, everyone who has
>> reported about recent hangs is using a 5.2 kernel.
>>
>> For those on Arch, switching to the linux-lts package (4.19 kernel) will
>> fix it for now.
>
>
> Hi,
>
> I haven't yet got round to looking at it. But I've created this bug which collects relevant info in one place: https://github.com/bytefire/speakup/issues/10
>
> Thanks,
> Okash
^ permalink raw reply [flat|nested] 6+ messages in thread
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