net: hns3: add input length check for debugfs write function
If the input length reaches the maximum value of size_t, the reverse is triggered when 1 is added. In addition, there is no need to have such a large length. Therefore, the input length should be checked and the value should be less than or equal to 1024. Signed-off-by: Yufeng Mo <moyufeng@huawei.com> Reviewed-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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