diff --git a/kerneldriver/cases/Makefile b/kerneldriver/cases/Makefile
index 5361328f360c49d78ba572ba4efd6453da7b5bbc..9a92161cff8ba3327d757b5ac3e5c3766400a05d 100644
--- a/kerneldriver/cases/Makefile
+++ b/kerneldriver/cases/Makefile
@@ -16,6 +16,9 @@ ifndef KDIR
 KDIR=$(KERNEL_SRC)
 endif
 
+KBUILD_EXTRA_SYMBOLS += $(PWD)/../core/Module.symvers
+export KBUILD_EXTRA_SYMBOLS
+
 all:
 	$(MAKE) -C $(KERNEL_SRC) M=$(PWD) modules KCPPFLAGS="${cflags-y}"
 
diff --git a/kerneldriver/core/hook_unit/secDetector_hook.h b/kerneldriver/core/hook_unit/secDetector_hook.h
index 7aba3c2a273b964e052440f756a0678a1d34b1e1..18ece6704b077bc60e175820738d8ce283c3f7bb 100644
--- a/kerneldriver/core/hook_unit/secDetector_hook.h
+++ b/kerneldriver/core/hook_unit/secDetector_hook.h
@@ -42,7 +42,7 @@ extern void init_secDetector_hook(void);
 		list_for_each_entry_rcu (workflow, &(callback_list), list) {   \
 			if (atomic_read(&workflow->enabled) &&                 \
 			    atomic_read(&workflow->module->enabled))           \
-				workflow->workflow_func.func(workflow, PARAMS(args));    \
+				workflow->workflow_func.func(PARAMS(args));    \
 		}                                                              \
 		mutex_unlock(&g_hook_list_array_mutex);                        \
 	} while (0)
@@ -55,7 +55,7 @@ extern void init_secDetector_hook(void);
 		list_for_each_entry_rcu (workflow, &(callback_list), list) {   \
 			if (atomic_read(&workflow->enabled) &&                 \
 			    atomic_read(&workflow->module->enabled))           \
-				workflow->workflow_func.func(workflow, PARAMS(args));    \
+				workflow->workflow_func.func(PARAMS(args));    \
 		}                                                              \
 		rcu_read_unlock();                                             \
 	} while (0)
diff --git a/kerneldriver/core/response_unit/secDetector_response.c b/kerneldriver/core/response_unit/secDetector_response.c
index dad9b3ad6cfb62fea8ac46e256a708bfa09af8ad..cfaed21ba39fab8a6cf57534d1bdf693fdf874c4 100644
--- a/kerneldriver/core/response_unit/secDetector_response.c
+++ b/kerneldriver/core/response_unit/secDetector_response.c
@@ -58,7 +58,7 @@ void notrace secdetector_report(response_data_t *log)
 					 BPF_RB_FORCE_WAKEUP);
 	if (ret != 0)
 		pr_warn("write ringbuf failed\n");
-	free(rb_entry);
+	kfree(rb_entry);
 }
 EXPORT_SYMBOL_GPL(secdetector_report);
 
diff --git a/kerneldriver/include/secDetector_workflow_type.h b/kerneldriver/include/secDetector_workflow_type.h
index 8e619b42dcc7798ca920515e2fddcb65b2a11449..cc7d5003f709052b77eea8cbbf3d0bf8689eb5ac 100644
--- a/kerneldriver/include/secDetector_workflow_type.h
+++ b/kerneldriver/include/secDetector_workflow_type.h
@@ -23,7 +23,8 @@ struct secDetector_workflow;
 union workflow_func {
 	void (*func)(void);
 	void (*file_event)(struct secDetector_file *, int);
-	void (*timer_func)(struct secDetector_workflow *, struct timer_list *);
+	//void (*timer_func)(struct secDetector_workflow *, struct timer_list *);
+	void (*timer_func)(struct timer_list *);
 	void (*func_wf)(struct secDetector_workflow *);
 };