io_uring: ensure that io_init_req() passes in the right issue_flags

stable inclusion
from stable-v5.10.172
commit da24142b1ef9fd5d36b76e36bab328a5b27523e8
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I6V7V1
CVE: CVE-2023-1872

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=da24142b1ef9fd5d36b76e36bab328a5b27523e8



--------------------------------

We can't use 0 here, as io_init_req() is always invoked with the
ctx uring_lock held. Newer kernels have IO_URING_F_UNLOCKED for this,
but previously we used IO_URING_F_NONBLOCK to indicate this as well.

Fixes: 08681391b84d ("io_uring: add missing lock in io_get_file_fixed")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: ZhaoLong Wang <wangzhaolong1@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>