On 8/5/2024 11:39 AM, Lizhi Hou wrote: > +int aie2_max_col = XRS_MAX_COL; > +module_param(aie2_max_col, int, 0600); > +MODULE_PARM_DESC(aie2_max_col, "Maximum column could be used"); I think you selected the wrong type. What happens if someone sets this to a negative value?