On 21/05/2024 14:29, Jens Axboe wrote:
> On 5/21/24 12:25 PM, Jens Axboe wrote:
>> Outside of that, only other thing I can think of is that the final
>> close would be punted to task_work by fput(), which means there's also
>> a dependency on the task having run its kernel task_work before it's
>> fully closed.
> 
> Yep I think that's it, the below should fix it.
> 
> 
> diff --git a/io_uring/sqpoll.c b/io_uring/sqpoll.c
> index 554c7212aa46..68a3e3290411 100644
> --- a/io_uring/sqpoll.c
> +++ b/io_uring/sqpoll.c
> @@ -241,6 +241,8 @@ static unsigned int io_sq_tw(struct llist_node **retry_list, int max_entries)
>   			return count;
>   		max_entries -= count;
>   	}
> +	if (task_work_pending(current))
> +		task_work_run();
>   
>   	*retry_list = tctx_task_work_run(tctx, max_entries, &count);
>   	return count;
> 

This patch works for me on 6.9.1.

  $ yarn
yarn install v1.22.22
warning package.json: "test" is also the name of a node core module
info No lockfile found.
warning test@1.0.0: "test" is also the name of a node core module
[1/4] Resolving packages...
[2/4] Fetching packages...
[3/4] Linking dependencies...
[4/4] Building fresh packages...
success Saved lockfile.
Done in 3.32s.

  $ uname -a
Linux limelight 6.9.1-gentoo-limelight #2 SMP PREEMPT_DYNAMIC TKG Tue 
May 21 15:21:33 EDT 2024

--
Andrew