io_uring process termination/killing is not working

[Josef <josef.grieb@xxxxxxxxx>]

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

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Josef

Attachment: io_uring_process.c
Description: Binary data