I'm encountering a kernel panic when I try to unload the "univ-bbgw" cape 
from my $SLOTS file. 

My setup is: 
Seeed BeagleBone Green Wireless
Seeed Grove Base Cape for Beaglebone v2.0
bone-debian-8.7-seeed-iot-armhf-2017-03-26-4gb

Here's my terminal output and dmesg of the error: 
https://gist.github.com/alexmullins/a4f9673b2cb280679b8df11be1f4140f. 

I think this is the relevant part of dmseg: 

[  380.483327] Unable to handle kernel NULL pointer dereference at virtual 
address 0000000d
[  380.491655] pgd = db5d4000
[  380.494384] [0000000d] *pgd=9b533831, *pte=00000000, *ppte=00000000
[  380.500908] Internal error: Oops: 17 [#1] SMP ARM

I've looked at the univ-bbgw.dts 
<https://github.com/RobertCNelson/bb.org-overlays/blob/master/src/arm/univ-bbgw-00A0.dts>
 and 
I don't see anything out of the ordinary there (I'm not great with device 
trees though).

Also, I'm noticing that the Seeed Grove Base Cape for Beaglebone v2.0 
doesn't have a valid EEPROM signature:

[    2.554339] bone_capemgr bone_capemgr: Invalid signature 'ffffffff' at 
slot 3

Not sure if that could have something to do with this.

Does anyone have any tips on where to go from here?

Thanks,

-Alex

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