#11573 HIGH 1.75-so: Runin C1 failure with EC transmit FIFO not empty, NULL pointer dereference, disk LED activity

[Zarro Boogs per Child]

#11573: Runin C1 failure with EC transmit FIFO not empty, NULL pointer dereference,
disk LED activity
-----------------------+----------------------------------------------------
 Reporter:  greenfeld  |                 Owner:                                   
     Type:  defect     |                Status:  new                              
 Priority:  high       |             Milestone:  1.75-software                    
Component:  kernel     |               Version:  Development build as of this date
 Keywords:             |           Next_action:  diagnose                         
 Verified:  0          |   Deployment_affected:                                   
Blockedby:             |              Blocking:                                   
-----------------------+----------------------------------------------------
 SHC14300982/SKU 202 failed with 9 minutes 56 left in runin citing an EC
 problem on the serial console followed by null pointer dereferences which
 hung the Linux kernel.  It did not respond to serial break/SysRq requests.

 At the point of hang the system was quickly flashing its disk activity
 light off approximately once per second with it otherwise solidly turned
 on (perhaps for OLS reading?).

 Battery charging LED was entirely turned off.  Camera and microphone LEDs
 were turned on.

 EC serial control was not attached to this system.

 This system was setup like those in #11571 and #11572 with Q4C12, patched
 0.17.0 build, aggressive 10s suspend, f1f8f7fe kernel RPM, etc.

 3455 suspend cycles were completed prior to failure which appears to have
 happened during a resume cycle.

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Ticket URL: <http://dev.laptop.org/ticket/11573>
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