The biggest bug with the early fq_codel deployment was that it dropped from head and fq'd which led to the prospect of messages sent out of order on the can protocol, which was not designed for that.. After much thought, we ended up overriding the default fq_codel qdisc, for a fifo, for the can bus devices, but there were a few years there where fq_codel was the default for can, in openwrt, which sometimes keeps me awake at night.
This set of security bugs is bigger and essentially a message flood attack on a FIFO, making it possible to steal a car via accessing the headlamp, using a 10 dollar adaptor. Fascinating reading. https://kentindell.github.io/2023/04/03/can-injection/ -- AMA March 31: https://www.broadband.io/c/broadband-grant-events/dave-taht Dave Täht CEO, TekLibre, LLC _______________________________________________ Bloat mailing list Bloat@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/bloat