Re: [PATCH] sched_ext: Fix potential deadlock in destroy_dsq()

[Tejun Heo]

On Thu, Jan 16, 2025 at 12:51:01PM +0100, Andrea Righi wrote:
> When creating and destroying DSQs concurrently, a potential deadlock can
> occur due to a circular locking dependency between the locks involved in
> the operations:
> 
>  - create_dsq():
> 
>   rhashtable_bucket --> rq->lock --> dsq->lock

Hmm... this is probably the same thing that Breno tried to fix with
rhashtable update. Breno, what's the current state of that patch? I saw bug
reports and fix patch flying by but didn't track them closely.

Thanks.

-- 
tejun