diff --git a/source/module/monitor_kernel_lib.c b/source/module/monitor_kernel_lib.c
index 0f30ee9..4ecaed2 100644
--- a/source/module/monitor_kernel_lib.c
+++ b/source/module/monitor_kernel_lib.c
@@ -56,17 +56,23 @@ static int init_buffer(unsigned int buf_size) {
 
 void diag_tsk(struct task_struct *p, variable_monitor_task *tsk_info,unsigned long *flags) {
 
+  printk(KERN_INFO "diag_tsk\n");
   diag_task_brief(p, &tsk_info->task);            // task brief
+  printk("1\n");
   diag_task_user_stack(p, &tsk_info->user_stack); // user stack
+  printk("2\n");
   diag_task_kern_stack(p, &tsk_info->kern_stack); // kernel stack
+  printk("3\n");
   dump_proc_chains_argv(1, p, &mm_tree_struct,
                         &tsk_info->proc_chains); // proc chains
-
+  printk("4\n");
   diag_variant_buffer_spin_lock(&load_monitor_variant_buffer, *flags);
   diag_variant_buffer_reserve(&load_monitor_variant_buffer,
                               sizeof(variable_monitor_task));
+  printk("5\n");
   diag_variant_buffer_write_nolock(&load_monitor_variant_buffer, &tsk_info,
                                    sizeof(variable_monitor_task));
+  printk("6\n");
   diag_variant_buffer_seal(&load_monitor_variant_buffer);
   diag_variant_buffer_spin_unlock(&load_monitor_variant_buffer, *flags);
 }
@@ -196,8 +202,8 @@ enum hrtimer_restart check_variable_cb(struct hrtimer *timer) {
     unsigned long flags;
     unsigned long event_id = get_cycles();
 
-    static variable_monitor_task tsk_info;
-    static variable_monitor_record vm_record;
+    static variable_monitor_task tsk_info = {0};
+    static variable_monitor_record vm_record = {0};
 
     vm_record.id = event_id;
     vm_record.et_type = 1; //! todo event type
diff --git a/source/module/monitor_trace.c b/source/module/monitor_trace.c
index 236f3ee..5d0b943 100644
--- a/source/module/monitor_trace.c
+++ b/source/module/monitor_trace.c
@@ -293,15 +293,20 @@ void diag_task_user_stack(struct task_struct *tsk, user_stack_detail *detail) {
   unsigned long sp, ip, bp;
   struct task_struct *leader;
 
-  if (!detail)
+  if (!detail){
+    printk("diag_task_user_stack 4\n");
     return;
+  }
 
   detail->stack[0] = 0;
-  if (!tsk || !tsk->mm)
+  if (!tsk || !tsk->mm){
+    printk("diag_task_user_stack 5\n");
     return;
+  }
 
   leader = tsk->group_leader;
   if (!leader || !leader->mm || leader->exit_state == EXIT_ZOMBIE) {
+    printk("diag_task_user_stack 6\n");
     return;
   }
 
@@ -311,26 +316,19 @@ void diag_task_user_stack(struct task_struct *tsk, user_stack_detail *detail) {
   regs = task_pt_regs(tsk);
   if (regs) {
     sp = regs->sp;
-#if defined(DIAG_ARM64)
-    ip = regs->pc;
-    bp = regs->sp;
-#else
     ip = regs->ip;
     bp = regs->bp;
-#endif
   }
-#if defined(DIAG_ARM64)
-  detail->regs = regs->user_regs;
-#else
   detail->regs = *regs;
-#endif
   detail->sp = sp;
   detail->ip = ip;
   detail->bp = bp;
 
   if (tsk == current) {
+    printk("diag_task_user_stack 7\n");
     diagnose_save_stack_trace_user(detail->stack);
   } else {
+    printk("diag_task_user_stack 8\n");
     diagnose_save_stack_trace_user_remote(tsk, detail->stack);
   }
 }