[Cake] Lockup at high speeds

Toke Høiland-Jørgensen toke at toke.dk
Fri Jun 1 13:53:57 EDT 2018

Jonathan Morton <chromatix99 at gmail.com> writes:

>> On 1 Jun, 2018, at 8:46 pm, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
>> As you may have seen, I hit a lockup bug when testing Cake at high
>> speeds. I am not quite sure what is happening, but we seem to be looping
>> forever either in cake_dequeue() or cake_enqueue(), causing deadlocks.
>> Unfortunately, I have no more time to debug this for now. As far as I
>> can tell, it only seems to be happening as the shaped rate approaches or
>> exceeds the link speed, or when running in unlimited mode. So for all I
>> know it might be possible to trigger it at lower speeds as well...
>> Anyone with any bright ideas?
> Is there a complete copy of the code somewhere I can look at it?  I'm
> still running the cobalt branch.

I've been trying to keep everything in sync. The upstream-4.18 branch is
identical to what I've been submitting; the only thing missing from the
cobalt branch should be the classification stuff.

The tests I just did where I saw the lockup was the current cobalt


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