intelmetool crashed mei_me driver

[Shawn]

Hi,

intelmetool crashed mei_me driver and you can reproduce it via:

--------------------------
#!/bin/bash

counter=0

while [ $counter -le 1000 ]
do
    ./intelmetool -m >> /tmp/me.log
    echo $counter
    sleep 5
    counter=$(($counter + 1))
done

--------------------------

The kernel crash log was attached!

[linux-mei] intelmetool crashed mei_me driver

[Winkler, Tomas]

What is intelmeitool?
Thanks
Tomas
> -----Original Message-----
> From: [e-mail] [mailto:linux-mei-
> [e-mail]] On Behalf Of Shawn
> Sent: Tuesday, January 22, 2019 10:30
> To: [e-mail]; coreboot 
> Subject: [linux-mei] intelmetool crashed mei_me driver
>
> Hi,
>
> intelmetool crashed mei_me driver and you can reproduce it via:
>
> #!/bin/bash
>
> counter=0
>
> while [ $counter -le 1000 ]
> do
>     ./intelmetool -m >> /tmp/me.log
>     echo $counter
>     sleep 5
>     counter=$(($counter + 1))
> done
>
> The kernel crash log was attached!
>
> regards
> Shawn
>
> [e-mail]
> https://eclists.intel.com/sympa/info/linux-mei
> Unsubscribe by sending email to [e-mail] with subject
> "Unsubscribe linux-mei"

[linux-mei] intelmetool crashed mei_me driver

[Shawn]

use this one:
https://github.com/coreboot/coreboot/tree/master/util/intelmetool

On Tue, Jan 22, 2019 at 4:32 PM Winkler, Tomas  wrote:
> What is intelmeitool?
> Thanks
> Tomas
> > -----Original Message-----
> > From: [e-mail] [mailto:linux-mei-
> > [e-mail]] On Behalf Of Shawn
> > Sent: Tuesday, January 22, 2019 10:30
> > To: [e-mail]; coreboot 
> > Subject: [linux-mei] intelmetool crashed mei_me driver
> >
> > Hi,
> >
> > intelmetool crashed mei_me driver and you can reproduce it via:
> >
> > #!/bin/bash
> >
> > counter=0
> >
> > while [ $counter -le 1000 ]
> > do
> >     ./intelmetool -m >> /tmp/me.log
> >     echo $counter
> >     sleep 5
> >     counter=$(($counter + 1))
> > done
> >
> > The kernel crash log was attached!
> >
> > regards
> > Shawn
> >
> > [e-mail]
> > https://eclists.intel.com/sympa/info/linux-mei
> > Unsubscribe by sending email to [e-mail] with subject
> > "Unsubscribe linux-mei"

[linux-mei] intelmetool crashed mei_me driver

[Winkler, Tomas]

First time I see it. 
My guess is this tool is for SPS and it will conflict with the mei driver on clients platform (mobile, desktop, workstations)
It messes up the drive state machine, hence the error 
I've removed recently the BUG() from the drivers so I guess on 4.20 it won't crash, but still this cannot work. 
Thanks
Tomas
> -----Original Message-----
> From: Shawn [mailto:[e-mail]]
> Sent: Tuesday, January 22, 2019 10:38
> To: Winkler, Tomas 
> Cc: [e-mail]; coreboot 
> Subject: Re: [linux-mei] intelmetool crashed mei_me driver
>
> use this one:
> https://github.com/coreboot/coreboot/tree/master/util/intelmetool
>
> On Tue, Jan 22, 2019 at 4:32 PM Winkler, Tomas 
> wrote:
> > What is intelmeitool?
> > Thanks
> > Tomas
> > > -----Original Message-----
> > > From: [e-mail] [mailto:linux-mei-
> > > [e-mail]] On Behalf Of Shawn
> > > Sent: Tuesday, January 22, 2019 10:30
> > > To: [e-mail]; coreboot 
> > > Subject: [linux-mei] intelmetool crashed mei_me driver
> > >
> > > Hi,
> > >
> > > intelmetool crashed mei_me driver and you can reproduce it via:
> > >
> > > #!/bin/bash
> > >
> > > counter=0
> > >
> > > while [ $counter -le 1000 ]
> > > do
> > >     ./intelmetool -m >> /tmp/me.log
> > >     echo $counter
> > >     sleep 5
> > >     counter=$(($counter + 1))
> > > done
> > >
> > > The kernel crash log was attached!
> > >
> > > regards
> > > Shawn
> > >
> > > [e-mail]
> > > https://eclists.intel.com/sympa/info/linux-mei
> > > Unsubscribe by sending email to [e-mail] with subject
> > > "Unsubscribe linux-mei"
>
> regards
> Shawn

[linux-mei] intelmetool crashed mei_me driver

[Shawn]

intelmetool is for ME( desktop/laptop/etc) and we barely use it on
SPS. We tested it on a pre-broadwell machine and it works fine. Could
it be an issue related to the specific ME OS, e.g: the different impls
of handling stuff from mei_me between MINIX-based and ThreadX?

On Tue, Jan 22, 2019 at 4:44 PM Winkler, Tomas  wrote:
> First time I see it.
> My guess is this tool is for SPS and it will conflict with the mei driver on clients platform (mobile, desktop, workstations)
> It messes up the drive state machine, hence the error
> I've removed recently the BUG() from the drivers so I guess on 4.20 it won't crash, but still this cannot work.
> Thanks
> Tomas

[linux-mei] intelmetool crashed mei_me driver

[Winkler, Tomas]

The tools impalements the mei state machine in the user space so it will conflict with the driver, you can try to unbind the driver if you need such functionality,
Second the  protocol is evolving and we are update the driver but I cannot update it in a tool I don't know about.
I suggest you rewrite the tool using the driver interface. 
This is not connected in any way to underlying FW OS, this is about API.
Thanks
Tomas
> -----Original Message-----
> From: [e-mail] [mailto:linux-mei-
> [e-mail]] On Behalf Of Shawn
> Sent: Wednesday, January 23, 2019 05:40
> To: Winkler, Tomas 
> Cc: [e-mail]; coreboot 
> Subject: Re: [linux-mei] intelmetool crashed mei_me driver
>
> intelmetool is for ME( desktop/laptop/etc) and we barely use it on SPS. We
> tested it on a pre-broadwell machine and it works fine. Could it be an issue
> related to the specific ME OS, e.g: the different impls of handling stuff from
> mei_me between MINIX-based and ThreadX?
>
> On Tue, Jan 22, 2019 at 4:44 PM Winkler, Tomas 
> wrote:
> > First time I see it.
> > My guess is this tool is for SPS and it will conflict with the mei
> > driver on clients platform (mobile, desktop, workstations) It messes
> > up the drive state machine, hence the error I've removed recently the BUG()
>
> from the drivers so I guess on 4.20 it won't crash, but still this cannot work.
> > Thanks
> > Tomas
>
> regards
> Shawn
>
> [e-mail]
> https://eclists.intel.com/sympa/info/linux-mei
> Unsubscribe by sending email to [e-mail] with subject
> "Unsubscribe linux-mei"