diff --git a/fs/proc/os_adapt/process_proc.c b/fs/proc/os_adapt/process_proc.c
index 39764dc0f0dd17a6ce6ea7b8f855d7d110166d3c..f9a9d53acb98562ec8316a9e32622534c986b016 100644
--- a/fs/proc/os_adapt/process_proc.c
+++ b/fs/proc/os_adapt/process_proc.c
@@ -103,6 +103,8 @@ static ssize_t ProcessContainerLink(unsigned int containerID, ContainerType type
 
 static ssize_t ProcessContainerReadLink(struct ProcDirEntry *entry, char *buffer, size_t bufLen)
 {
+    char *freeBuf = NULL;
+    char *buf = buffer;
     ssize_t count;
     unsigned int intSave;
     if (entry == NULL) {
@@ -112,17 +114,41 @@ static ssize_t ProcessContainerReadLink(struct ProcDirEntry *entry, char *buffer
     if (data == NULL) {
         return -EINVAL;
     }
+
+    if (LOS_IsUserAddressRange((VADDR_T)(UINTPTR)buffer, bufLen)) {
+        buf = LOS_MemAlloc(m_aucSysMem1, bufLen);
+        if (buf == NULL) {
+            return -ENOMEM;
+        }
+        (void)memset_s(buf, bufLen, 0, bufLen);
+        freeBuf = buf;
+    }
+
     LosProcessCB *processCB = ProcGetProcessCB(data);
     SCHEDULER_LOCK(intSave);
     UINT32 containerID = OsGetContainerID(processCB, (ContainerType)data->type);
     SCHEDULER_UNLOCK(intSave);
     if (containerID != OS_INVALID_VALUE) {
-        return ProcessContainerLink(containerID, (ContainerType)data->type, buffer, bufLen);
+        count = ProcessContainerLink(containerID, (ContainerType)data->type, buf, bufLen);
+    } else {
+        count = strlen("(unknown)");
+        if (memcpy_s(buf, bufLen, "(unknown)", count + 1) != EOK) {
+            (void)LOS_MemFree(m_aucSysMem1, freeBuf);
+            return -EBADF;
+        }
     }
-    count = strlen("(unknown)");
-    if (memcpy_s(buffer, bufLen, "(unknown)", count + 1) != EOK) {
-        return -EBADF;
+    if (count < 0) {
+        (void)LOS_MemFree(m_aucSysMem1, freeBuf);
+        return count;
+    }
+
+    if (LOS_IsUserAddressRange((VADDR_T)(UINTPTR)buffer, bufLen)) {
+        if (LOS_ArchCopyToUser(buffer, buf, bufLen) != 0) {
+            (void)LOS_MemFree(m_aucSysMem1, freeBuf);
+            return -EFAULT;
+        }
     }
+    (void)LOS_MemFree(m_aucSysMem1, freeBuf);
     return count;
 }
 
diff --git a/fs/vfs/vnode.c b/fs/vfs/vnode.c
index b8b513dcc58ed869ed11ad4e5374163896a90409..4f97adb07d1c4ac1d785c2678d42f6463dfe2d02 100644
--- a/fs/vfs/vnode.c
+++ b/fs/vfs/vnode.c
@@ -138,7 +138,7 @@ int VnodeAlloc(struct VnodeOps *vop, struct Vnode **newVnode)
     VnodeHold();
     vnode = GetFromFreeList();
     if ((vnode == NULL) && g_totalVnodeSize < LOSCFG_MAX_VNODE_SIZE) {
-        vnode = (struct Vnode*)zalloc(sizeof(struct Vnode));
+        vnode = (struct Vnode *)zalloc(sizeof(struct Vnode));
         g_totalVnodeSize++;
     }
 
diff --git a/syscall/fs_syscall.c b/syscall/fs_syscall.c
index fefff88d03401bd3914e2b17426c182d21a61ca8..eec9b5b486c0704de3fcdc0f662f5112ec2710ee 100644
--- a/syscall/fs_syscall.c
+++ b/syscall/fs_syscall.c
@@ -321,7 +321,7 @@ static unsigned int ProcRealProcessIDGet(unsigned int pid)
 
     SCHEDULER_LOCK(intSave);
     LosProcessCB *pcb = OsGetPCBFromVpid(pid);
-    if (pcb == NULL) {
+    if (OsProcessIsInactive(pcb)) {
         SCHEDULER_UNLOCK(intSave);
         return 0;
     }
diff --git a/testsuites/unittest/process/fs/smoke/It_process_fs_013.cpp b/testsuites/unittest/process/fs/smoke/It_process_fs_013.cpp
index b4afdb099ccf330219d78220212aab111092d35d..d34d49d587e1d4c503998b6e3bd1b10fd52ae98a 100644
--- a/testsuites/unittest/process/fs/smoke/It_process_fs_013.cpp
+++ b/testsuites/unittest/process/fs/smoke/It_process_fs_013.cpp
@@ -30,19 +30,13 @@
 #include <gtest/gtest.h>
 #include "It_process_fs_test.h"
 
-static const int ini_process_max = 3;
-
 void ItProcessFs013(void)
 {
     std::string path;
     DIR *dirp = nullptr;
-    for (int i = 1; i <= ini_process_max; i++) {
-        if (i != 2) { /* 2: skip kernel process */
-            path = GenProcPidPath(i);
-            printf("path: %s\n", path.c_str());
-            dirp = opendir(path.data());
-            ASSERT_NE(dirp, nullptr);
-            (void)closedir(dirp);
-        };
-    }
+    path = GenProcPidPath(1);
+    printf("path: %s\n", path.c_str());
+    dirp = opendir(path.data());
+    ASSERT_NE(dirp, nullptr);
+    (void)closedir(dirp);
 }