diff --git a/Ubiquitous/XiZi_AIoT/kernel_actracer/actracer.c b/Ubiquitous/XiZi_AIoT/kernel_actracer/actracer.c
index 8412f6f59..f74596559 100644
--- a/Ubiquitous/XiZi_AIoT/kernel_actracer/actracer.c
+++ b/Ubiquitous/XiZi_AIoT/kernel_actracer/actracer.c
@@ -147,7 +147,7 @@ void* AchieveResource(TraceTag* tag)
 
 bool CreateResourceTag(TraceTag* new_tag, TraceTag* owner, char* name, tracemeta_ac_type type, void* p_resource)
 {
-    assert(new_tag != NULL && owner != NULL);
+    assert(owner != NULL);
     if (owner->meta == NULL) {
         ERROR("Tracer: Empty owner\n");
         return false;
@@ -168,7 +168,9 @@ bool CreateResourceTag(TraceTag* new_tag, TraceTag* owner, char* name, tracemeta
     doubleListAddOnHead(&new_node->list_node, &owner->meta->children_guard);
     new_node->parent = owner->meta;
 
-    new_tag->meta = new_node;
+    if (new_tag != NULL) {
+        new_tag->meta = new_node;
+    }
     return true;
 }
 
@@ -187,12 +189,42 @@ bool DeleteResource(TraceTag* target, TraceTag* owner)
     if (target->meta->name != NULL) {
         slab_free(&sys_tracer.node_name_allocator, target->meta->name);
     }
+
     // delete all children
-    /// @attention currently donot allow multilevel resource deletion
     if (target->meta->type == TRACER_OWNER) {
-        assert(IS_DOUBLE_LIST_EMPTY(&target->meta->children_guard));
+        while (!IS_DOUBLE_LIST_EMPTY(&target->meta->children_guard)) {
+            TraceTag tmp_node = {
+                .meta = DOUBLE_LIST_ENTRY(target->meta->children_guard.next, TracerNode, list_node),
+            };
+            DeleteResource(&tmp_node, target);
+        }
     }
     slab_free(&sys_tracer.node_allocator, target->meta);
     target->meta = NULL;
     return true;
+}
+
+void debug_list_tracetree_inner(TracerNode* cur_node)
+{
+    DEBUG("[%s] ", cur_node->name);
+    TracerNode* tmp = NULL;
+    DOUBLE_LIST_FOR_EACH_ENTRY(tmp, &cur_node->children_guard, list_node)
+    {
+        if (tmp->name != NULL) {
+            DEBUG("%s ", tmp->name);
+        } else {
+            DEBUG("ANON ");
+        }
+    }
+    DEBUG("\n");
+    DOUBLE_LIST_FOR_EACH_ENTRY(tmp, &cur_node->children_guard, list_node)
+    {
+        debug_list_tracetree_inner(tmp);
+    }
+}
+
+void debug_list_tracetree()
+{
+    TracerNode* ref_root = RequireRootTag()->meta;
+    debug_list_tracetree_inner(ref_root);
 }
\ No newline at end of file
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/include/buddy.h b/Ubiquitous/XiZi_AIoT/softkernel/include/buddy.h
index d7cd11556..e6f3cf77b 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/include/buddy.h
+++ b/Ubiquitous/XiZi_AIoT/softkernel/include/buddy.h
@@ -32,7 +32,6 @@ Modification:
 #include "list.h"
 #include "memlayout.h"
 #include "spinlock.h"
-#include "pagetable.h"
 
 #include <stdbool.h>
 #include <stdint.h>
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/include/kalloc.h b/Ubiquitous/XiZi_AIoT/softkernel/include/kalloc.h
index 98e55333e..66ec4cddd 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/include/kalloc.h
+++ b/Ubiquitous/XiZi_AIoT/softkernel/include/kalloc.h
@@ -34,6 +34,7 @@ Modification:
 bool module_phymem_init();
 char* kalloc(size_t size);
 bool kfree(char* vaddr);
+bool raw_kfree(char* paddr);
 
 char* raw_alloc(size_t size);
 bool raw_free(char* paddr);
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/include/memspace.h b/Ubiquitous/XiZi_AIoT/softkernel/include/memspace.h
index 03cb948b5..44cc9575c 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/include/memspace.h
+++ b/Ubiquitous/XiZi_AIoT/softkernel/include/memspace.h
@@ -29,10 +29,14 @@ Modification:
 *************************************************/
 #pragma once
 
+#include "actracer.h"
 #include "bitmap64.h"
 #include "buddy.h"
 #include "list.h"
-#include "share_page.h"
+
+struct TopLevelPageDirectory {
+    uintptr_t* pd_addr;
+};
 
 struct ThreadStackPointer {
     int argc;
@@ -42,6 +46,8 @@ struct ThreadStackPointer {
 };
 
 struct MemSpace {
+    /* trace node */
+    TraceTag tag;
     /* task memory resources */
     struct TopLevelPageDirectory pgdir; // [phy] vm pgtbl base address
     uintptr_t heap_base; // mem size of proc used(allocated by kernel)
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/include/pagetable.h b/Ubiquitous/XiZi_AIoT/softkernel/include/pagetable.h
index 802ba5442..e0938d322 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/include/pagetable.h
+++ b/Ubiquitous/XiZi_AIoT/softkernel/include/pagetable.h
@@ -33,11 +33,12 @@ Modification:
 #include <string.h>
 
 #include "memlayout.h"
-
-#include "actracer.h"
 #include "mmu.h"
 #include "mmu_common.h"
 
+#include "actracer.h"
+#include "memspace.h"
+
 // clang-format off
 #define ALIGNUP(size, align)         (((uintptr_t)(size) + (uintptr_t)(align) - 1) & ~((uintptr_t)(align) - 1))
 #define ALIGNDOWN(size, align)       ((uintptr_t)(size) & ~((uintptr_t)(align) - 1))
@@ -49,10 +50,6 @@ Modification:
 #define TOPLEVLE_PAGEDIR_SIZE   sizeof(uintptr_t) * NUM_TOPLEVEL_PDE
 // clang-format on
 
-struct TopLevelPageDirectory {
-    uintptr_t* pd_addr;
-};
-
 struct PagerRightGroup {
     struct TraceTag mmu_driver_tag;
 };
@@ -60,10 +57,10 @@ struct PagerRightGroup {
 struct XiziPageManager {
     bool (*new_pgdir)(struct TopLevelPageDirectory* pgdir);
     void (*free_user_pgdir)(struct TopLevelPageDirectory* pgdir);
-    bool (*map_pages)(uintptr_t* pd_addr, uintptr_t vaddr, uintptr_t paddr, int len, bool is_dev);
+    bool (*map_pages)(struct MemSpace* pmemspace, uintptr_t vaddr, uintptr_t paddr, int len, bool is_dev);
     bool (*unmap_pages)(uintptr_t* pd_addr, uintptr_t vaddr, int len);
 
-    uintptr_t (*resize_user_pgdir)(struct TopLevelPageDirectory* pgdir, uintptr_t old_size, uintptr_t new_size);
+    uintptr_t (*resize_user_pgdir)(struct MemSpace* pmemspace, uintptr_t old_size, uintptr_t new_size);
     uintptr_t (*address_translate)(struct TopLevelPageDirectory* pgdir, uintptr_t vaddr);
     uintptr_t (*cross_vspace_data_copy)(struct TopLevelPageDirectory* pgdir, uintptr_t cross_dest, uintptr_t src, uintptr_t len);
 };
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/include/task.h b/Ubiquitous/XiZi_AIoT/softkernel/include/task.h
index d33f88e09..accfb513a 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/include/task.h
+++ b/Ubiquitous/XiZi_AIoT/softkernel/include/task.h
@@ -109,6 +109,7 @@ struct SchedulerRightGroup {
 };
 
 struct XiziTaskManager {
+    TraceTag tag;
     /* thead schedule lists */
     struct double_list_node task_list_head[TASK_MAX_PRIORITY]; /* list of task control blocks that are allocated */
     struct double_list_node task_running_list_head;
@@ -149,5 +150,4 @@ extern uint32_t ready_task_priority;
 extern struct Thread* next_task_emergency;
 extern struct XiziTaskManager xizi_task_manager;
 
-int spawn_embedded_task(char* img_start, char* name, char** argv);
-bool module_task_manager_init(void);
+bool module_task_manager_init(TraceTag* softkernel_tag);
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/init/softkernel_init.c b/Ubiquitous/XiZi_AIoT/softkernel/init/softkernel_init.c
index dd5c1d22d..53e3d4291 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/init/softkernel_init.c
+++ b/Ubiquitous/XiZi_AIoT/softkernel/init/softkernel_init.c
@@ -48,7 +48,7 @@ bool softkernel_init(struct TraceTag* _hardkernel_tag, struct TraceTag* _softker
     AchieveResourceTag(&intr_driver_tag, _hardkernel_tag, "intr-ac-resource");
     load_kern_pgdir(&mmu_driver_tag, &intr_driver_tag); // enter kernel virtmem space
 
-    module_task_manager_init(); // init task
+    module_task_manager_init(_softkernel_tag); // init task
 
     struct SharePageRightGroup sp_rights;
     AchieveResourceTag(&sp_rights.dcache_driver_tag, _hardkernel_tag, "dcache-ac-resource");
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/main.c b/Ubiquitous/XiZi_AIoT/softkernel/main.c
index 593064ec0..d19f63d67 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/main.c
+++ b/Ubiquitous/XiZi_AIoT/softkernel/main.c
@@ -44,8 +44,10 @@ extern int sys_spawn(char* img_start, char* name, char** argv);
 static struct TraceTag hardkernel_tag, softkernel_tag;
 static volatile int core_para_init = 0;
 
-static void sync_cores() {
-    while (core_para_init != ((1 << NR_CPU) - 1)) ;
+static void main_sync_cores()
+{
+    while (core_para_init != ((1 << NR_CPU) - 1))
+        ;
     return;
 }
 
@@ -87,7 +89,8 @@ int main(void)
 
         for (int i = 1; i < NR_CPU; i++) {
             // start secondary cpus
-            while ((core_para_init & (1 << (i - 1))) == 0);
+            while ((core_para_init & (1 << (i - 1))) == 0)
+                ;
             cpu_start_secondary(i);
         }
 
@@ -106,7 +109,7 @@ int main(void)
 
     // sync memory
     __sync_synchronize();
-    sync_cores();
+    main_sync_cores();
     start_smp_cache_broadcast(cpu_id);
     // enter kernel seriously
     xizi_enter_kernel();
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/memory/kalloc.c b/Ubiquitous/XiZi_AIoT/softkernel/memory/kalloc.c
index 1e799cc12..4bed55c1d 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/memory/kalloc.c
+++ b/Ubiquitous/XiZi_AIoT/softkernel/memory/kalloc.c
@@ -69,6 +69,11 @@ bool kfree(char* vaddr)
     return KBuddyFree(&kern_virtmem_buddy, V2P_WO(vaddr));
 }
 
+bool raw_kfree(char* paddr)
+{
+    return KBuddyFree(&kern_virtmem_buddy, paddr);
+}
+
 char* raw_alloc(size_t size)
 {
     char* mem_alloc = KBuddyAlloc(&user_phy_freemem_buddy, size);
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable.c b/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable.c
index 3ab681281..65ce48aca 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable.c
+++ b/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable.c
@@ -122,7 +122,7 @@ static bool _unmap_pages(uintptr_t* pgdir, uintptr_t vaddr, int len)
 /// @param len
 /// @param is_dev
 /// @return
-static bool _map_user_pages(uintptr_t* pgdir, uintptr_t vaddr, uintptr_t paddr, int len, bool is_dev)
+static bool _map_user_pages(struct MemSpace* pmemspace, uintptr_t vaddr, uintptr_t paddr, int len, bool is_dev)
 {
     if (len < 0) {
         return false;
@@ -140,13 +140,13 @@ static bool _map_user_pages(uintptr_t* pgdir, uintptr_t vaddr, uintptr_t paddr,
         _p_pgtbl_mmu_access->MmuUsrDevPteAttr(&mem_attr);
     }
 
-    return _map_pages(pgdir, vaddr, paddr, (intptr_t)len, mem_attr);
+    return _map_pages(pmemspace->pgdir.pd_addr, vaddr, paddr, (intptr_t)len, mem_attr);
 }
 
 /// assume that a user pagedir is allocated from [0, size)
 /// if new_size > old_size, allocate more space,
 /// if old_size > new_size, free extra space, to avoid unnecessary alloc/free.
-static uintptr_t _resize_user_pgdir(struct TopLevelPageDirectory* pgdir, uintptr_t old_size, uintptr_t new_size)
+static uintptr_t _resize_user_pgdir(struct MemSpace* pmemspace, uintptr_t old_size, uintptr_t new_size)
 {
     if (UNLIKELY(new_size > USER_MEM_TOP)) {
         ERROR("user size out of range.\n");
@@ -167,9 +167,10 @@ static uintptr_t _resize_user_pgdir(struct TopLevelPageDirectory* pgdir, uintptr
         }
         memset(new_page, 0, PAGE_SIZE);
 
-        if (!xizi_pager.map_pages(pgdir->pd_addr, cur_size, V2P(new_page), PAGE_SIZE, false)) {
+        if (!xizi_pager.map_pages(pmemspace, cur_size, V2P(new_page), PAGE_SIZE, false)) {
             return cur_size;
         }
+        CreateResourceTag(NULL, &pmemspace->tag, NULL, TRACER_MEM_FROM_BUDDY_AC_RESOURCE, V2P(new_page));
         cur_size += PAGE_SIZE;
     }
 
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable_level2.c b/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable_level2.c
index d04736611..bbc32ea0b 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable_level2.c
+++ b/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable_level2.c
@@ -73,23 +73,6 @@ void _free_user_pgdir(struct TopLevelPageDirectory* pgdir)
         // free each level4 page table
         uintptr_t* pgtbl_paddr = (uintptr_t*)LEVEL4_PTE_ADDR(pgdir->pd_addr[level4_entry_idx]);
         if (pgtbl_paddr != NULL) {
-            // free each page
-            for (uintptr_t page_entry_idx = 0; page_entry_idx < NUM_LEVEL4_PTE; page_entry_idx++) {
-                uintptr_t vaddr = (level4_entry_idx << LEVEL3_PDE_SHIFT) | (page_entry_idx << LEVEL4_PTE_SHIFT);
-
-                // get page paddr
-                uintptr_t* page_paddr = (uintptr_t*)ALIGNDOWN(((uintptr_t*)P2V(pgtbl_paddr))[page_entry_idx], PAGE_SIZE);
-                if (page_paddr != NULL) {
-                    // IPC vaddr should not be addressed here.
-                    assert(vaddr < USER_IPC_SPACE_BASE || vaddr >= USER_IPC_SPACE_TOP);
-
-                    if (LIKELY((uintptr_t)page_paddr >= low_bound && (uintptr_t)page_paddr < high_bound)) {
-                        kfree(P2V(page_paddr));
-                    } else if (LIKELY((uintptr_t)page_paddr >= user_low_bound && (uintptr_t)page_paddr < user_high_bound)) {
-                        raw_free((char*)page_paddr);
-                    }
-                }
-            }
             kfree(P2V(pgtbl_paddr));
         }
     }
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable_level3.c b/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable_level3.c
index d66c000eb..c9eb9a412 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable_level3.c
+++ b/Ubiquitous/XiZi_AIoT/softkernel/memory/pagetable_level3.c
@@ -96,22 +96,6 @@ void _free_user_pgdir(struct TopLevelPageDirectory* pgdir)
                 uintptr_t* l4_table_paddr = (uintptr_t*)LEVEL4_PTE_ADDR(l3_table_vaddr[l3_entry_idx]);
                 if (l4_table_paddr != NULL) {
                     uintptr_t* l4_table_vaddr = P2V(l4_table_paddr);
-                    for (uintptr_t page_entry_idx = 0; page_entry_idx < NUM_LEVEL4_PTE; page_entry_idx++) {
-                        uintptr_t vaddr = (l2_entry_idx << LEVEL2_PDE_SHIFT) | (l3_entry_idx << LEVEL3_PDE_SHIFT) | (page_entry_idx << LEVEL4_PTE_SHIFT);
-
-                        // get page paddr
-                        uintptr_t* page_paddr = (uintptr_t*)ALIGNDOWN((l4_table_vaddr)[page_entry_idx], PAGE_SIZE);
-                        if (page_paddr != NULL) {
-                            // Ensure the virtual address is not in the IPC address space
-                            assert(vaddr < USER_IPC_SPACE_BASE || vaddr >= USER_IPC_SPACE_TOP);
-
-                            if (LIKELY((uintptr_t)page_paddr >= low_bound && (uintptr_t)page_paddr < high_bound)) {
-                                kfree(P2V(page_paddr));
-                            } else if (LIKELY((uintptr_t)page_paddr >= user_low_bound && (uintptr_t)page_paddr < user_high_bound)) {
-                                raw_free((char*)page_paddr);
-                            }
-                        }
-                    }
                     kfree(P2V(l4_table_paddr));
                 }
             }
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/memory/share_page.c b/Ubiquitous/XiZi_AIoT/softkernel/memory/share_page.c
index aa9ff1fcf..1d5e7a43a 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/memory/share_page.c
+++ b/Ubiquitous/XiZi_AIoT/softkernel/memory/share_page.c
@@ -133,12 +133,12 @@ static uintptr_t map_task_share_page(struct Thread* task, const uintptr_t paddr,
     }
 
     // map first area
-    if (!xizi_pager.map_pages(task->memspace->pgdir.pd_addr, vaddr, paddr, nr_pages * PAGE_SIZE, false)) {
+    if (!xizi_pager.map_pages(task->memspace, vaddr, paddr, nr_pages * PAGE_SIZE, false)) {
         return (uintptr_t)NULL;
     }
 
     // map second area
-    if (!xizi_pager.map_pages(task->memspace->pgdir.pd_addr, vaddr + (nr_pages * PAGE_SIZE), paddr, nr_pages * PAGE_SIZE, false)) {
+    if (!xizi_pager.map_pages(task->memspace, vaddr + (nr_pages * PAGE_SIZE), paddr, nr_pages * PAGE_SIZE, false)) {
         xizi_pager.unmap_pages(task->memspace->pgdir.pd_addr, vaddr, nr_pages * PAGE_SIZE);
         return (uintptr_t)NULL;
     }
@@ -161,9 +161,9 @@ uintptr_t task_map_pages(struct Thread* task, const uintptr_t vaddr, const uintp
 
     bool ret = false;
     if (is_dev) {
-        ret = xizi_pager.map_pages(task->memspace->pgdir.pd_addr, vaddr, paddr, nr_pages * PAGE_SIZE, true);
+        ret = xizi_pager.map_pages(task->memspace, vaddr, paddr, nr_pages * PAGE_SIZE, true);
     } else {
-        ret = xizi_pager.map_pages(task->memspace->pgdir.pd_addr, vaddr, paddr, nr_pages * PAGE_SIZE, false);
+        ret = xizi_pager.map_pages(task->memspace, vaddr, paddr, nr_pages * PAGE_SIZE, false);
     }
 
     if (!ret) {
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/syscall/sys_mmap.c b/Ubiquitous/XiZi_AIoT/softkernel/syscall/sys_mmap.c
index 552e10263..56e019faf 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/syscall/sys_mmap.c
+++ b/Ubiquitous/XiZi_AIoT/softkernel/syscall/sys_mmap.c
@@ -44,6 +44,11 @@ int sys_mmap(uintptr_t* vaddr, uintptr_t* paddr, int len, int is_dev)
     int true_len = ALIGNUP(len, PAGE_SIZE);
 
     if (*paddr != (uintptr_t)NULL) {
+        if (*paddr >= PHY_MEM_BASE && *paddr < PHY_MEM_STOP && cur_task->tid > 1) {
+            ERROR("mapping invalid memory: 0x%p\n", *paddr);
+            return -1;
+        }
+
         if (xizi_share_page_manager.task_map_pages(cur_task, *vaddr, *paddr, true_len / PAGE_SIZE, is_dev) == (uintptr_t)NULL) {
             return -1;
         }
@@ -52,6 +57,7 @@ int sys_mmap(uintptr_t* vaddr, uintptr_t* paddr, int len, int is_dev)
         uintptr_t load_vaddr = *vaddr;
         while (load_len < true_len) {
             char* new_paddr = raw_alloc(PAGE_SIZE);
+            CreateResourceTag(NULL, &cur_task->memspace->tag, NULL, TRACER_MEM_FROM_BUDDY_AC_RESOURCE, new_paddr);
             if (new_paddr == NULL) {
                 return -1;
             }
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/task/memspace.c b/Ubiquitous/XiZi_AIoT/softkernel/task/memspace.c
index 8c15b852c..4f515d78f 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/task/memspace.c
+++ b/Ubiquitous/XiZi_AIoT/softkernel/task/memspace.c
@@ -32,11 +32,11 @@ Modification:
 #include <stddef.h>
 #include <stdint.h>
 
+#include "assert.h"
 #include "bitmap64.h"
 #include "execelf.h"
 #include "kalloc.h"
 #include "memspace.h"
-#include "pagetable.h"
 #include "task.h"
 
 #define MAX_SUPPORT_PARAMS 32
@@ -56,6 +56,7 @@ struct MemSpace* alloc_memspace()
     pmemspace->mem_size = 0;
     pmemspace->pgdir.pd_addr = 0;
     pmemspace->thread_to_notify = NULL;
+    CreateResourceTag(&pmemspace->tag, &xizi_task_manager.tag, NULL, TRACER_OWNER, (void*)pmemspace);
     return pmemspace;
 }
 
@@ -68,12 +69,24 @@ void free_memspace(struct MemSpace* pmemspace)
         xizi_pager.free_user_pgdir(&pmemspace->pgdir);
     }
 
+    TracerNode* tmp_node = NULL;
+    DOUBLE_LIST_FOR_EACH_ENTRY(tmp_node, &pmemspace->tag.meta->children_guard, list_node)
+    {
+        assert((uintptr_t)tmp_node->p_resource >= PHY_MEM_BASE && (uintptr_t)tmp_node->p_resource < PHY_MEM_STOP);
+        if ((uintptr_t)tmp_node->p_resource < PHY_USER_FREEMEM_BASE) {
+            kfree(P2V(tmp_node->p_resource));
+        } else {
+            raw_free(tmp_node->p_resource);
+        }
+    }
+
     /* free ipc virt address allocator */
     if (pmemspace->massive_ipc_allocator != NULL) {
         KBuddyDestory(pmemspace->massive_ipc_allocator);
         slab_free(&xizi_task_manager.task_buddy_allocator, (void*)pmemspace->massive_ipc_allocator);
     }
 
+    DeleteResource(&pmemspace->tag, &xizi_task_manager.tag);
     slab_free(&xizi_task_manager.memspace_allocator, (void*)pmemspace);
 }
 
@@ -101,14 +114,12 @@ uintptr_t* load_memspace(struct MemSpace* pmemspace, char* img_start)
     /* allocate a pgdir */
     /* only supports first inited memspace */
     assert(pmemspace->pgdir.pd_addr == NULL);
-    struct TopLevelPageDirectory pgdir;
-    pgdir.pd_addr = NULL;
-    if (UNLIKELY(!xizi_pager.new_pgdir(&pgdir))) {
+    if (UNLIKELY(!xizi_pager.new_pgdir(&pmemspace->pgdir))) {
         ERROR("Create new pgdir failed.\n");
         goto error_exec;
     }
     /* copy kernel pagetable so that interrupt and syscall wont corrupt */
-    memcpy(pgdir.pd_addr, kern_pgdir.pd_addr, TOPLEVLE_PAGEDIR_SIZE);
+    memcpy(pmemspace->pgdir.pd_addr, kern_pgdir.pd_addr, TOPLEVLE_PAGEDIR_SIZE);
 
     // read elf file by (header, section)
     uintptr_t load_size = 0;
@@ -126,7 +137,7 @@ uintptr_t* load_memspace(struct MemSpace* pmemspace, char* img_start)
 
         // read section
         // 1. alloc space
-        if ((load_size = xizi_pager.resize_user_pgdir(&pgdir, load_size, ph.vaddr + ph.memsz))
+        if ((load_size = xizi_pager.resize_user_pgdir(pmemspace, load_size, ph.vaddr + ph.memsz))
             != ph.vaddr + ph.memsz) {
             ERROR("Add uspace size failed.\n");
             goto error_exec;
@@ -136,9 +147,9 @@ uintptr_t* load_memspace(struct MemSpace* pmemspace, char* img_start)
             LOG("Unsupported elf file, try use flag -N to compile.\n");
         }
         for (int addr_offset = 0; addr_offset < ph.filesz; addr_offset += PAGE_SIZE) {
-            uintptr_t page_paddr = xizi_pager.address_translate(&pgdir, ph.vaddr + addr_offset);
+            uintptr_t page_paddr = xizi_pager.address_translate(&pmemspace->pgdir, ph.vaddr + addr_offset);
             if (page_paddr == 0) {
-                ERROR("copy elf file to unmapped addr: %x(pgdir: %x)\n", ph.vaddr + addr_offset, pgdir.pd_addr);
+                ERROR("copy elf file to unmapped addr: %x(pgdir: %x)\n", ph.vaddr + addr_offset, pmemspace->pgdir.pd_addr);
                 goto error_exec;
             }
             uintptr_t read_size = (ph.filesz - addr_offset < PAGE_SIZE ? ph.filesz - addr_offset : PAGE_SIZE);
@@ -148,15 +159,14 @@ uintptr_t* load_memspace(struct MemSpace* pmemspace, char* img_start)
 
     /// elf file content now in memory
     // memspace will use this page dir
-    pmemspace->pgdir = pgdir;
     pmemspace->heap_base = ALIGNUP(load_size, PAGE_SIZE);
     pmemspace->mem_size = pmemspace->heap_base;
 
     return (uintptr_t*)elf.entry;
 
 error_exec:
-    if (pgdir.pd_addr != NULL) {
-        xizi_pager.free_user_pgdir(&pgdir);
+    if (pmemspace->pgdir.pd_addr != NULL) {
+        xizi_pager.free_user_pgdir(&pmemspace->pgdir);
     }
     ERROR("Error loading memspace.\n");
     return NULL;
@@ -209,7 +219,7 @@ struct ThreadStackPointer load_user_stack(struct MemSpace* pmemspace, char** arg
     }
 
     /* map memory to user stack space in memspace*/
-    if (!xizi_pager.map_pages(pmemspace->pgdir.pd_addr, USER_MEM_TOP - ((stack_idx + 1) * USER_STACK_SIZE), V2P(stack_bottom), USER_STACK_SIZE, false)) {
+    if (!xizi_pager.map_pages(pmemspace, USER_MEM_TOP - ((stack_idx + 1) * USER_STACK_SIZE), V2P(stack_bottom), USER_STACK_SIZE, false)) {
         /* this could only fail due to inner page directory's allocation failure */
         ERROR("User stack map failed\n");
         handle_error_stack_loading(pmemspace, stack_idx, stack_bottom, false);
diff --git a/Ubiquitous/XiZi_AIoT/softkernel/task/task.c b/Ubiquitous/XiZi_AIoT/softkernel/task/task.c
index ecf749347..ba54cb0a1 100644
--- a/Ubiquitous/XiZi_AIoT/softkernel/task/task.c
+++ b/Ubiquitous/XiZi_AIoT/softkernel/task/task.c
@@ -303,11 +303,8 @@ static void _scheduler(struct SchedulerRightGroup right_group)
         /* if there's not a runnable task, wait for one */
         if (next_task == NULL) {
             xizi_leave_kernel();
-           
-
             /* leave kernel for other cores, so they may create a runnable task */
             xizi_enter_kernel();
-           
             continue;
         }
 
@@ -392,8 +389,9 @@ struct XiziTaskManager xizi_task_manager = {
     .set_cur_task_priority = _set_cur_task_priority
 };
 
-bool module_task_manager_init(void)
+bool module_task_manager_init(TraceTag* softkernel_tag)
 {
+    CreateResourceTag(&xizi_task_manager.tag, softkernel_tag, "KTaskManager", TRACER_OWNER, &xizi_task_manager);
     xizi_task_manager.init();
     return true;
 }