Re: io_uring process termination/killing is not working

Pavel Begunkov
2020-08-12T18:24:55Z

On 12/08/2020 21:20, Pavel Begunkov wrote:
> On 12/08/2020 21:05, Jens Axboe wrote:
>> On 8/12/20 11:58 AM, Josef wrote:
>>> Hi,
>>>
>>> I have a weird issue on kernel 5.8.0/5.8.1, SIGINT even SIGKILL
>>> doesn't work to kill this process(always state D or D+), literally I
>>> have to terminate my VM because even the kernel can't kill the process
>>> and no issue on 5.7.12-201, however if IOSQE_IO_LINK is not set, it
>>> works
>>>
>>> I've attached a file to reproduce it
>>> or here
>>> https://gist.github.com/1Jo1/15cb3c63439d0c08e3589cfa98418b2c
>>
>> Thanks, I'll take a look at this. It's stuck in uninterruptible
>> state, which is why you can't kill it.
>
> It looks like one of the hangs I've been talking about a few days ago,
> an accept is inflight but can't be found by cancel_files() because it's
> in a link.

BTW, I described it a month ago, there were more details.

--
Pavel Begunkov