io_uring_group

file: /proc/sys/kernel/io_uring_group
variable: kernel.io_uring_group
Official reference

When io_uring_disabled is set to 1, a process must either be privileged (CAP_SYS_ADMIN) or be in the io_uring_group group in order to create an io_uring instance. If io_uring_group is set to -1 (the default), only processes with the CAP_SYS_ADMIN capability may create io_uring instances.