[Bug 236235] iwm: Intel Dual Band Wireless-AC 3168NGW [Stone Peak] not scanning

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236235

--- Comment #7 from Bert JW Regeer <xistence at 0x58.com> ---
Alright, figured out the issue with the firmware not loading is due to me
trying to pass it through to a VM.

So, from the host, with the patch applied, the system panics as soon as I do:

kenv dev.iwm.0.debug=0x00080000
cd /usr/obj/usr/src/amd64.amd64/sys/GENERIC/modules/usr/src/sys/modules/iwm
devctl detach iwm0
kldunload if_iwm
kldload ./if_iwm.ko

Picture of output with stack trace:

https://imgur.com/a/bpN7m9D

I would rather it not panic, and instead just unload the driver, but here we
are.

Panic message transcribed:

panic: ieee80211_get_ratetable: no rate table for channel; freq 0 flags 0x0

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