[Make-wifi-fast] crypto-fq bug postmortem is up

[Loganaden Velvindron]

On the tp-link archer c7 v2, and toke's firmware, I hit a non reproducible bug:

After running flent a couple of times, the wifi stops working. It's no
longer reachable.

I was using whatsapp a few minutes ago, when the same thing happened.

I can narrow it down to the wifi (bgn), because when I disable the
wifi interface via luci, and re-enable it, wifi works properly.
Unfortunately, there are no relevant messages in the kernel or system
log. I'm using wpa-psk (ccmp) for encryption.