there is an overflow in the code :
cyz_polling_cycle = (arg * HZ) / 1000,
the multiplicator arg comes from user, so it may be an overflow if
arg is a big number. And the value of cyc_polling_cycle will be
wrong when it is used next time.
Reported-by: NQixue Xiao <xiaoqixue_1@163.com>
Suggested-by: NYongjian Xu <xuyongjiande@gmail.com>
Suggested-by: NYu Chen <chyyuu@gmail.com>
Signed-off-by: NQixue Xiao <xiaoqixue_1@163.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>