arg->eeprom_rd = ev->hal_reg_capabilities.eeprom_rd;
        arg->num_mem_reqs = ev->num_mem_reqs;
        arg->service_map = ev->wmi_service_bitmap;
+       arg->service_map_len = sizeof(ev->wmi_service_bitmap);
 
        n = min_t(size_t, __le32_to_cpu(arg->num_mem_reqs),
                  ARRAY_SIZE(arg->mem_reqs));
        arg->eeprom_rd = ev->hal_reg_capabilities.eeprom_rd;
        arg->num_mem_reqs = ev->num_mem_reqs;
        arg->service_map = ev->wmi_service_bitmap;
+       arg->service_map_len = sizeof(ev->wmi_service_bitmap);
 
        n = min_t(size_t, __le32_to_cpu(arg->num_mem_reqs),
                  ARRAY_SIZE(arg->mem_reqs));
 
        ath10k_debug_read_service_map(ar, svc_bmap, sizeof(svc_bmap));
        ath10k_dbg_dump(ar, ATH10K_DBG_WMI, NULL, "wmi svc: ",
-                       arg.service_map, sizeof(arg.service_map));
+                       arg.service_map, arg.service_map_len);
 
        /* only manually set fw features when not using FW IE format */
        if (ar->fw_api == 1 && ar->fw_version_build > 636)