test_task_rename() and test_urandom_read()
can be failed during write() and read(),
So check the result of them.
Reviewed-by: NDavid Laight <David.Laight@ACULAB.COM>
Signed-off-by: NTaeung Song <treeze.taeung@gmail.com>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>