On Wednesday, March 21, 2018, 12:07 PM (UTC+0100), "Hartmann, O." 
<ohartm...@walstatt.org> wrote:
> Hello.
> 
> Incident: CURRENT r331284 can be brought down reliably with an USB
> flash drive plugged in and out without mounting or doing anything with
> it.
> 
> [...]
> 
> Does anyone else observe this bug?
> 

Can confirm: whenever I plug my Transcend USB microSD reader into my builder 
(amd64, r331284), the kernel does attach da0 then immediately panics and falls 
down to `db>` prompt.

> I can plugin the USB and then unplug it and after two or three times doing 
> this, the box goes down.

I did not even have to plug-unplug the reader three times; plug the reader in 
and bam! immediate panic.

AFAIK, r331115 did not have this issue because I was able to update my RPi 2 
with the very reader from the very builder.
I managed to salvage kernel binary dump; in case the dump is needed, please let 
me know.
-- 
Hyun Hwang
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