RE: ILK regression: hangs on reboot to Watchdog line, bisected

[Winkler, Tomas]

> -----Original Message-----
> From: Sarvela, Tomi P
> Sent: Monday, January 09, 2017 20:11
> To: Winkler, Tomas <tomas.winkler@xxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx
> Cc: intel-gfx-ci@xxxxxxxxxxxxxxxxx
> Subject: ILK regression: hangs on reboot to Watchdog line, bisected
> 
> Hello there,
> 
> Our Iron Lake testhosts stopped rebooting at Christmas time. When
> commanding reboot, the last line showing is
> [   21.360606] watchdog: watchdog0: watchdog did not stop!
> (usually after that comes reboot: Restarting system)
> 
> This affects the following hardware:
> HP Elite 8100 Small Form Factor (ILK 650) HP Elitebook 8440p (ILK m540) IBM
> ThinkCentre A85 (ILK 650)
> 
> Older "Cantiga" hardware isn't affected and reboots as it should, as does
> Pineview and Sandy Bridge.
> 
> Bisecting shows that the first bad commit is
> ----
> commit 7279b238badec09efd0545293e64c21feee97f73
> Author: Alexander Usyskin <alexander.usyskin@xxxxxxxxx>
> Date:   Thu Nov 10 18:38:57 2016 +0200
> 
>     mei: send OS type to the FW
> ----
> 
> If there's something I can do to track this bug down, the hosts are usually
> available for testing.

A fix is here https://lkml.org/lkml/2017/1/9/414
Bugzilla entry https://bugzilla.kernel.org/show_bug.cgi?id=192051
Thanks
Tomas