panic in drm or vt or deadlock on mutex or ...

Hans Petter Selasky hps at selasky.org
Mon Feb 8 13:02:24 UTC 2021


On 2/8/21 1:53 PM, Alastair Hogge wrote:
> Boot to multi-user; login (getty):
> $ doas kldload /boot/modules/amdgpu.ko
> $ sysctl
> [panic]
> 
> ..is a guaranteed way to panic my system.

Hi,

Maybe you could do a hack and edit the sysctl source code:

1) print the sysctl before it is queried.
2) sleep 1 second between print and query.

Should be easy to nail this down!

--HPS
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