diff --git a/cli/src/basic.c b/cli/src/basic.c
index 37ca120..d4de536 100644
--- a/cli/src/basic.c
+++ b/cli/src/basic.c
@@ -4,18 +4,14 @@
 */
 #include "basic.h"
 #include <stdlib.h>
-#include "logger.h"
+#include <stdio.h>
 
 void InitParsedConfig(struct ParsedConfig *parsedConfig)
 {
-<<<<<<< HEAD
-    if (parsedConfig != NULL) {
-=======
-    if (parsedConfig != NULL)
-    {
->>>>>>> fd706c08945c4519bcefe0d295d55c42c7ad1711
-        Logger("parsedConfig Pointer is null!.");
+    if (parsedConfig == NULL) {
+        fprintf(stderr, "parsedConfig pointer is null!\n");
         return;
     }
+    
     parsedConfig->devicesNr = MAX_DEVICE_NR;
 }
\ No newline at end of file
diff --git a/cli/src/cgrp.c b/cli/src/cgrp.c
index 29534bc..83b5864 100644
--- a/cli/src/cgrp.c
+++ b/cli/src/cgrp.c
@@ -21,6 +21,11 @@
 
 bool TakeNthWord(char **pLine, unsigned int n, char **word)
 {
+    if (pLine == NULL || word == NULL) {
+        fprintf(stderr, "pLine, word pointer is null!\n");
+        return false;
+    }
+
     char *w = NULL;
     for (unsigned int i = 0; i < n; i++) {
         w = strsep(pLine, " ");
@@ -35,6 +40,11 @@ bool TakeNthWord(char **pLine, unsigned int n, char **word)
 
 bool CheckRootDir(char **pLine)
 {
+    if (pLine == NULL) {
+        fprintf(stderr, "pLine pointer is null!\n");
+        return false;
+    }
+
     char *rootDir = NULL;
     if (!TakeNthWord(pLine, ROOT_GAP, &rootDir)) {
         return false;
@@ -45,6 +55,11 @@ bool CheckRootDir(char **pLine)
 
 bool CheckFsType(char **pLine)
 {
+    if (pLine == NULL) {
+        fprintf(stderr, "pLine pointer is null!\n");
+        return false;
+    }
+
     char* fsType = NULL;
     if (!TakeNthWord(pLine, FSTYPE_GAP, &fsType)) {
         return false;
@@ -55,6 +70,11 @@ bool CheckFsType(char **pLine)
 
 bool CheckSubStr(char **pLine, const char *subsys)
 {
+    if (pLine == NULL || subsys == NULL) {
+        fprintf(stderr, "pLine, subsys pointer is null!\n");
+        return false;
+    }
+
     char* substr = NULL;
     if (!TakeNthWord(pLine, MOUNT_SUBSTR_GAP, &substr)) {
         return false;
@@ -66,6 +86,11 @@ bool CheckSubStr(char **pLine, const char *subsys)
 typedef char *(*ParseFileLine)(char *, const char *);
 int ParseFileByLine(char* buffer, int bufferSize, const ParseFileLine fn, const char* filepath)
 {
+    if (buffer == NULL || filepath == NULL) {
+        fprintf(stderr, "buffer, filepath pointer is null!\n");
+        return -1;
+    }
+
     FILE *fp = NULL;
     char *result = NULL;
     char *line = NULL;
@@ -107,6 +132,11 @@ int ParseFileByLine(char* buffer, int bufferSize, const ParseFileLine fn, const
 
 char *GetCgroupMount(char *line, const char *subsys)
 {
+    if (line == NULL || subsys == NULL) {
+        fprintf(stderr, "line, subsys pointer is null!\n");
+        return NULL;
+    }
+    
     if (!CheckRootDir(&line)) {
         return NULL;
     }
@@ -131,6 +161,11 @@ char *GetCgroupMount(char *line, const char *subsys)
 
 char *GetCgroupRoot(char *line, const char *subSystem)
 {
+    if (line == NULL || subSystem == NULL) {
+        fprintf(stderr, "line, subSystem pointer is null!\n");
+        return NULL;
+    }
+    
     char *token = NULL;
     int i;
     for (i = 0; i < ROOT_SUBSTR_GAP; ++i) {
@@ -156,6 +191,11 @@ char *GetCgroupRoot(char *line, const char *subSystem)
 
 int SetupDeviceCgroup(FILE *cgroupAllow, const char *devName)
 {
+    if (cgroupAllow == NULL || devName == NULL) {
+        fprintf(stderr, "cgroupAllow, devName pointer is null!\n");
+        return -1;
+    }
+
     int ret;
     struct stat devStat;
     char devPath[BUF_SIZE];
@@ -188,8 +228,12 @@ int SetupDeviceCgroup(FILE *cgroupAllow, const char *devName)
 
 int SetupDriverCgroup(FILE *cgroupAllow)
 {
-    int ret;
+    if (cgroupAllow == NULL) {
+        fprintf(stderr, "cgroupAllow pointer is null!\n");
+        return -1;
+    }
 
+    int ret;
     ret = SetupDeviceCgroup(cgroupAllow, DAVINCI_MANAGER);
     if (ret < 0) {
         char* str = FormatLogMessage("failed to setup cgroup for %s.", DAVINCI_MANAGER);
@@ -219,6 +263,11 @@ int SetupDriverCgroup(FILE *cgroupAllow)
 
 int GetCgroupPath(int pid, char *effPath, size_t maxSize)
 {
+    if (effPath == NULL) {
+        fprintf(stderr, "effPath pointer is null!\n");
+        return -1;
+    }
+
     int ret;
     char mountPath[BUF_SIZE] = {0x0};
     char mount[BUF_SIZE] = {0x0};
@@ -267,12 +316,15 @@ int GetCgroupPath(int pid, char *effPath, size_t maxSize)
 
 int SetupCgroup(const struct ParsedConfig *config)
 {
-    int ret;
+    if (config == NULL) {
+        fprintf(stderr, "config pointer is null!\n");
+        return -1;
+    }
+
     char *str = NULL;
     char deviceName[BUF_SIZE] = {0};
     char resolvedCgroupPath[PATH_MAX] = {0};
     FILE *cgroupAllow = NULL;
-
     if (realpath(config->cgroupPath, resolvedCgroupPath) == NULL && errno != ENOENT) {
         Logger("cannot canonicalize cgroup.", LEVEL_ERROR, SCREEN_YES);
         free(str);
@@ -289,26 +341,23 @@ int SetupCgroup(const struct ParsedConfig *config)
         return -1;
     }
 
-    ret = SetupDriverCgroup(cgroupAllow);
-    if (ret < 0) {
+    if (SetupDriverCgroup(cgroupAllow) < 0) {
         fclose(cgroupAllow);
         Logger("failed to setup driver cgroup.", LEVEL_ERROR, SCREEN_YES);
         return -1;
     }
-
     for (size_t idx = 0; idx < config->devicesNr; idx++) {
-        int ret = sprintf_s(deviceName, BUF_SIZE, "%s%u",
+        if (sprintf_s(deviceName, BUF_SIZE, "%s%u",
             (IsVirtual() ? VDEVICE_NAME : DEVICE_NAME),
-            config->devices[idx]);
-        if (ret < 0) {
+            config->devices[idx]) < 0) {
             fclose(cgroupAllow);
             str = FormatLogMessage("failed to assemble device path for no.%u.", config->devices[idx]);
             Logger(str, LEVEL_ERROR, SCREEN_YES);
             free(str);
             return -1;
         }
-        ret = SetupDeviceCgroup(cgroupAllow, (const char *)deviceName);
-        if (ret < 0) {
+
+        if (SetupDeviceCgroup(cgroupAllow, (const char *)deviceName) < 0) {
             fclose(cgroupAllow);
             Logger("failed to setup cgroup.", LEVEL_ERROR, SCREEN_YES);
             free(str);
diff --git a/cli/src/logger.c b/cli/src/logger.c
index 6745515..4445c78 100644
--- a/cli/src/logger.c
+++ b/cli/src/logger.c
@@ -22,6 +22,11 @@
 
 int GetCurrentLocalTime(char* buffer, int length)
 {
+    if (buffer == NULL) {
+        fprintf(stderr, "buffer pointer is null!\n");
+        return -1;
+    }
+
     time_t timep = time(NULL);
     struct tm result = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
     struct tm *timeinfo = localtime_r(&timep, &result);
@@ -56,6 +61,11 @@ int CreateLog(const char* filename)
 
 long GetLogSize(const char* filename)
 {
+    if (filename == NULL) {
+        fprintf(stderr, "filename pointer is null!\n");
+        return -1;
+    }
+
     int ret;
     ret = CreateLog(filename);
     if (ret < 0) {
@@ -85,6 +95,11 @@ long GetLogSize(const char* filename)
 
 int LogLoop(const char* filename)
 {
+    if (filename == NULL) {
+        fprintf(stderr, "filename pointer is null!\n");
+        return -1;
+    }
+
     int ret;
     char* loopPath = LOG_PATH_DIR"docker-runtime-log.log.1";
     int exist;
@@ -105,6 +120,11 @@ int LogLoop(const char* filename)
 
 void WriteLogFile(const char* filename, long maxSize, const char* buffer, unsigned bufferSize)
 {
+    if (filename == NULL || buffer == NULL) {
+        fprintf(stderr, "filename, buffer pointer is null!\n");
+        return;
+    }
+    
     if (filename != NULL && buffer != NULL) {
         char path[PATH_MAX + 1] = {0x00};
         FILE *fp = NULL;
diff --git a/cli/src/main.c b/cli/src/main.c
index ac7c06d..5319d83 100644
--- a/cli/src/main.c
+++ b/cli/src/main.c
@@ -47,6 +47,11 @@ typedef bool (*CmdArgParser)(struct CmdArgs *args, const char *arg);
 
 static bool DevicesCmdArgParser(struct CmdArgs *args, const char *arg)
 {
+    if (args == NULL || arg == NULL) {
+        fprintf(stderr, "args, arg pointer is null!\n");
+        return false;
+    }
+
     errno_t err = strcpy_s(args->devices, BUF_SIZE, arg);
     if (err != EOK) {
         Logger("failed to get devices from cmd args.", LEVEL_ERROR, SCREEN_YES);
@@ -58,6 +63,11 @@ static bool DevicesCmdArgParser(struct CmdArgs *args, const char *arg)
 
 static bool PidCmdArgParser(struct CmdArgs *args, const char *arg)
 {
+    if (args == NULL || arg == NULL) {
+        fprintf(stderr, "args, arg pointer is null!\n");
+        return false;
+    }
+
     errno = 0;
     args->pid = strtol(optarg, NULL, DECIMAL);
     if (errno != 0) {
@@ -79,6 +89,11 @@ static bool PidCmdArgParser(struct CmdArgs *args, const char *arg)
 
 static bool RootfsCmdArgParser(struct CmdArgs *args, const char *arg)
 {
+    if (args == NULL || arg == NULL) {
+        fprintf(stderr, "args, arg pointer is null!\n");
+        return false;
+    }
+
     errno_t err = strcpy_s(args->rootfs, BUF_SIZE, arg);
     if (err != EOK) {
         Logger("failed to get rootfs path from cmd args", LEVEL_ERROR, SCREEN_YES);
@@ -90,6 +105,11 @@ static bool RootfsCmdArgParser(struct CmdArgs *args, const char *arg)
 
 static bool OptionsCmdArgParser(struct CmdArgs *args, const char *arg)
 {
+    if (args == NULL || arg == NULL) {
+        fprintf(stderr, "args, arg pointer is null!\n");
+        return false;
+    }
+
     errno_t err = strcpy_s(args->options, BUF_SIZE, arg);
     if (err != EOK) {
         Logger("failed to get options string from cmd args", LEVEL_ERROR, SCREEN_YES);
@@ -101,6 +121,11 @@ static bool OptionsCmdArgParser(struct CmdArgs *args, const char *arg)
 
 static bool MountFileCmdArgParser(struct CmdArgs *args, const char *arg)
 {
+    if (args == NULL || arg == NULL) {
+        fprintf(stderr, "args, arg pointer is null!\n");
+        return false;
+    }
+
     if (args->files.count == MAX_MOUNT_NR) {
         char* str = FormatLogMessage("too many files to mount, max number is %u", MAX_MOUNT_NR);
         Logger(str, LEVEL_ERROR, SCREEN_YES);
@@ -122,6 +147,11 @@ static bool MountFileCmdArgParser(struct CmdArgs *args, const char *arg)
 
 static bool MountDirCmdArgParser(struct CmdArgs *args, const char *arg)
 {
+    if (args == NULL || arg == NULL) {
+        fprintf(stderr, "args, arg pointer is null!\n");
+        return false;
+    }
+
     if (args->dirs.count == MAX_MOUNT_NR) {
         char* str = FormatLogMessage("too many directories to mount, max number is %u", MAX_MOUNT_NR);
         Logger(str, LEVEL_ERROR, SCREEN_YES);
@@ -157,6 +187,11 @@ static struct {
 
 static int ParseOneCmdArg(struct CmdArgs *args, char indicator, const char *value)
 {
+    if (args == NULL || value == NULL) {
+        fprintf(stderr, "args, value pointer is null!\n");
+        return -1;
+    }
+
     int i;
     for (i = 0; i < NUM_OF_CMD_ARGS; i++) {
         if (g_cmdArgParsers[i].c == indicator) {
@@ -182,11 +217,20 @@ static int ParseOneCmdArg(struct CmdArgs *args, char indicator, const char *valu
 
 static inline bool IsCmdArgsValid(const struct CmdArgs *args)
 {
+    if (args == NULL) {
+        fprintf(stderr, "args pointer is null!\n");
+        return false;
+    }
     return (strlen(args->devices) > 0) && (strlen(args->rootfs) > 0) && (args->pid > 0);
 }
 
 static int ParseDeviceIDs(unsigned int *idList, size_t *idListSize, char *devices)
 {
+    if (idList == NULL || idListSize == NULL || devices == NULL) {
+        fprintf(stderr, "idList, idListSize, devices pointer is null!\n");
+        return -1;
+    }
+
     static const char *sep = ",";
     char *token = NULL;
     char *context = NULL;
@@ -220,6 +264,11 @@ static int ParseDeviceIDs(unsigned int *idList, size_t *idListSize, char *device
 
 int DoPrepare(const struct CmdArgs *args, struct ParsedConfig *config)
 {
+    if (args == NULL || config == NULL) {
+        fprintf(stderr, "args, config pointer is null!\n");
+        return -1;
+    }
+
     int ret;
     errno_t err;
 
@@ -272,6 +321,11 @@ int DoPrepare(const struct CmdArgs *args, struct ParsedConfig *config)
 
 int SetupContainer(struct CmdArgs *args)
 {
+    if (args == NULL) {
+        fprintf(stderr, "args pointer is null!\n");
+        return -1;
+    }
+
     int ret;
     struct ParsedConfig config;
 
@@ -324,6 +378,10 @@ int SetupContainer(struct CmdArgs *args)
 
 int Process(int argc, char **argv)
 {
+    if (argv == NULL) {
+        fprintf(stderr, "argv pointer is null!\n");
+        return -1;
+    }
     int c;
     int ret;
     int optionIndex;
diff --git a/cli/src/options.c b/cli/src/options.c
index 144e3d3..2300016 100644
--- a/cli/src/options.c
+++ b/cli/src/options.c
@@ -24,6 +24,11 @@ static struct {
 
 void ParseRuntimeOptions(const char *options)
 {
+    if (options == NULL) {
+        fprintf(stderr, "options pointer is null!\n");
+        return;
+    }
+
     // set defaults value
     g_runtimeOptions.noDrv = false;
     g_runtimeOptions.isVirtual = false;
diff --git a/cli/src/u_mount.c b/cli/src/u_mount.c
index a54f08f..129f540 100644
--- a/cli/src/u_mount.c
+++ b/cli/src/u_mount.c
@@ -18,6 +18,11 @@
 
 int Mount(const char *src, const char *dst)
 {
+    if (src == NULL || dst == NULL) {
+        fprintf(stderr, "src pointer or dst pointer is null!\n");
+        return -1;
+    }
+
     static const unsigned long mountFlags = MS_BIND;
     static const unsigned long remountFlags = MS_BIND | MS_REMOUNT | MS_RDONLY | MS_NOSUID;
     int ret;
@@ -44,6 +49,11 @@ int Mount(const char *src, const char *dst)
 static int GetDeviceMntSrcDst(const char *rootfs, const char *srcDeviceName,
                               const char *dstDeviceName, struct PathInfo* pathInfo)
 {
+    if (rootfs == NULL || srcDeviceName == NULL || dstDeviceName == NULL || pathInfo == NULL) {
+        fprintf(stderr, "rootfs, srcDeviceName, dstDeviceName, pathInfo pointer are null!\n");
+        return -1;
+    }
+
     int ret;
     errno_t err;
     char unresolvedDst[BUF_SIZE] = {0};
@@ -96,21 +106,23 @@ static int GetDeviceMntSrcDst(const char *rootfs, const char *srcDeviceName,
 
 int MountDevice(const char *rootfs, const char *srcDeviceName, const char *dstDeviceName)
 {
-    int ret;
+    if (rootfs == NULL || srcDeviceName == NULL || dstDeviceName == NULL) {
+        fprintf(stderr, "rootfs, srcDeviceName, dstDeviceName pointer is null!\n");
+        return -1;
+    }
+
     char *str = NULL;
     char src[BUF_SIZE] = {0};
     char dst[BUF_SIZE] = {0};
     struct PathInfo pathInfo = {src, BUF_SIZE, dst, BUF_SIZE};
-    ret = GetDeviceMntSrcDst(rootfs, srcDeviceName, dstDeviceName, &pathInfo);
-    if (ret < 0) {
+    if (GetDeviceMntSrcDst(rootfs, srcDeviceName, dstDeviceName, &pathInfo) < 0) {
         str = FormatLogMessage("failed to get mount src and dst path, device name: %s.", srcDeviceName);
         Logger(str, LEVEL_ERROR, SCREEN_YES);
         free(str);
         return -1;
     }
     struct stat srcStat;
-    ret = stat((const char *)src, &srcStat);
-    if (ret < 0) {
+    if (stat((const char *)src, &srcStat) < 0) {
         str = FormatLogMessage("failed to stat src: %s.", src);
         Logger(str, LEVEL_ERROR, SCREEN_YES);
         free(str);
@@ -118,6 +130,7 @@ int MountDevice(const char *rootfs, const char *srcDeviceName, const char *dstDe
     }
     errno = 0;
     struct stat dstStat;
+    int ret;
     ret = stat((const char *)dst, &dstStat);
     if (ret == 0 && S_ISCHR(dstStat.st_mode)) {
         return 0; // 特权容器自动挂载HOST所有设备，故此处跳过
@@ -130,15 +143,15 @@ int MountDevice(const char *rootfs, const char *srcDeviceName, const char *dstDe
         Logger("failed to check dst stat", LEVEL_ERROR, SCREEN_YES);
         return -1;
     }
-    ret = MakeMountPoints(dst, srcStat.st_mode);
-    if (ret < 0) {
+
+    if (MakeMountPoints(dst, srcStat.st_mode) < 0) {
         str = FormatLogMessage("failed to create mount dst file: %s.", dst);
         Logger(str, LEVEL_ERROR, SCREEN_YES);
         free(str);
         return -1;
     }
-    ret = Mount(src, dst);
-    if (ret < 0) {
+
+    if (Mount(src, dst) < 0) {
         Logger("failed to mount dev.", LEVEL_ERROR, SCREEN_YES);
         return -1;
     }
@@ -148,6 +161,11 @@ int MountDevice(const char *rootfs, const char *srcDeviceName, const char *dstDe
 
 int DoDeviceMounting(const char *rootfs, const char *device_name, const unsigned int ids[], size_t idsNr)
 {
+    if (rootfs == NULL || device_name == NULL) {
+        fprintf(stderr, "rootfs, device_name pointer is null!\n");
+        return -1;
+    }
+
     char srcDeviceName[BUF_SIZE] = {0};
     char dstDeviceName[BUF_SIZE] = {0};
 
@@ -174,6 +192,11 @@ int DoDeviceMounting(const char *rootfs, const char *device_name, const unsigned
 
 int MountFile(const char *rootfs, const char *filepath)
 {
+    if (rootfs == NULL || filepath == NULL) {
+        fprintf(stderr, "rootfs, filepath pointer is null!\n");
+        return -1;
+    }
+
     int ret;
     char dst[BUF_SIZE] = {0};
 
@@ -210,6 +233,11 @@ int MountFile(const char *rootfs, const char *filepath)
 
 int MountDir(const char *rootfs, const char *src)
 {
+    if (rootfs == NULL || src == NULL) {
+        fprintf(stderr, "rootfs, src pointer is null!\n");
+        return -1;
+    }
+
     int ret;
     char dst[BUF_SIZE] = {0};
 
@@ -245,6 +273,11 @@ int MountDir(const char *rootfs, const char *src)
 
 int DoCtrlDeviceMounting(const char *rootfs)
 {
+    if (rootfs == NULL) {
+        fprintf(stderr, "rootfs pointer is null!\n");
+        return -1;
+    }
+
     /* device */
     int ret = MountDevice(rootfs, DAVINCI_MANAGER, NULL);
     if (ret < 0) {
@@ -275,8 +308,12 @@ int DoCtrlDeviceMounting(const char *rootfs)
 
 int DoDirectoryMounting(const char *rootfs, const struct MountList *list)
 {
-    int ret;
+    if (rootfs == NULL || list == NULL) {
+        fprintf(stderr, "rootfs, list pointer is null!\n");
+        return -1;
+    }
 
+    int ret;
     for (unsigned int i = 0; i < list->count; i++) {
         ret = MountDir(rootfs, (const char *)&list->list[i][0]);
         if (ret < 0) {
@@ -292,8 +329,12 @@ int DoDirectoryMounting(const char *rootfs, const struct MountList *list)
 
 int DoFileMounting(const char *rootfs, const struct MountList *list)
 {
-    int ret;
+    if (rootfs == NULL || list == NULL) {
+        fprintf(stderr, "rootfs, list pointer is null!\n");
+        return -1;
+    }
 
+    int ret;
     for (unsigned int i = 0; i < list->count; i++) {
         ret = MountFile(rootfs, (const char *)&list->list[i][0]);
         if (ret < 0) {
@@ -309,6 +350,11 @@ int DoFileMounting(const char *rootfs, const struct MountList *list)
 
 int DoMounting(const struct ParsedConfig *config)
 {
+    if (config == NULL) {
+        fprintf(stderr, "config pointer is null!\n");
+        return -1;
+    }
+
     int ret;
     ret = DoDeviceMounting(config->rootfs,
                            (IsVirtual() ? VDEVICE_NAME : DEVICE_NAME),
diff --git a/cli/src/utils.c b/cli/src/utils.c
index db7b6e4..b35cb23 100644
--- a/cli/src/utils.c
+++ b/cli/src/utils.c
@@ -18,6 +18,11 @@
 
 char *FormatLogMessage(char *format, ...)
 {
+    if (format == NULL) {
+        fprintf(stderr, "format pointer is null!\n");
+        return NULL;
+    }
+
     va_list list;
     // 获取格式化后字符串的长度
     va_start(list, format);
@@ -55,6 +60,11 @@ int StrHasPrefix(const char *str, const char *prefix)
 
 int MkDir(const char *dir, int mode)
 {
+    if (dir == NULL) {
+        fprintf(stderr, "dir pointer is null!\n");
+        return -1;
+    }
+
     return mkdir(dir, mode);
 }
 
@@ -68,6 +78,11 @@ int VerifyPathInfo(const struct PathInfo* pathInfo)
 
 int CheckDirExists(const char *dir)
 {
+    if (dir == NULL) {
+        fprintf(stderr, "dir pointer is null!\n");
+        return -1;
+    }
+
     DIR *ptr = opendir(dir);
     if (NULL == ptr) {
         return -1;
@@ -79,6 +94,11 @@ int CheckDirExists(const char *dir)
 
 int GetParentPathStr(const char *path, char *parent, size_t bufSize)
 {
+    if (path == NULL || parent == NULL) {
+        fprintf(stderr, "path pointer or parentPath is null!\n");
+        return -1;
+    }
+
     char *ptr = strrchr(path, '/');
     if (ptr == NULL) {
         return 0;
@@ -99,6 +119,11 @@ int GetParentPathStr(const char *path, char *parent, size_t bufSize)
 
 int MakeDirWithParent(const char *path, mode_t mode)
 {
+    if (path == NULL) {
+        fprintf(stderr, "path pointer is null!\n");
+        return -1;
+    }
+
     if (*path == '\0' || *path == '.') {
         return 0;
     }
@@ -122,6 +147,11 @@ int MakeDirWithParent(const char *path, mode_t mode)
 
 int MakeMountPoints(const char *path, mode_t mode)
 {
+    if (path == NULL) {
+        fprintf(stderr, "path pointer is null!\n");
+        return -1;
+    }
+
     /* directory */
     char parentDir[BUF_SIZE] = {0};
     GetParentPathStr(path, parentDir, BUF_SIZE);
@@ -155,6 +185,11 @@ int MakeMountPoints(const char *path, mode_t mode)
 
 int CheckLegality(const char* filename)
 {
+    if (filename == NULL) {
+        fprintf(stderr, "filename pointer is null!\n");
+        return -1;
+    }
+    
     char buf[PATH_MAX + 1] = {0x00};
     errno_t ret = strncpy_s(buf, PATH_MAX + 1, filename, strlen(filename));
     if (ret != EOK) {
diff --git a/install/deb/src/main.c b/install/deb/src/main.c
index d3c8ee6..0210e91 100644
--- a/install/deb/src/main.c
+++ b/install/deb/src/main.c
@@ -28,8 +28,9 @@ static void ReadJsonFile(FILE *pf, char *text, int maxBufferSize)
 {
     if (pf == NULL || text == NULL) {
         fprintf(stderr, "file pointer or text pointer are null!\n");
-        return NULL;
+        return;
     }
+
     (void)fseek(pf, 0, SEEK_END);
 
     int size = (int)ftell(pf);
@@ -47,10 +48,11 @@ static void ReadJsonFile(FILE *pf, char *text, int maxBufferSize)
 
 static cJSON *CreateAscendRuntimeInfo(const char *runtimePath)
 {
-    if (runtimePath = NULL) {
+    if (runtimePath == NULL) {
         fprintf(stderr, "runtimePath pointer are null!\n");
         return NULL;
     }
+
     cJSON *root = NULL;
     root = cJSON_CreateObject();
     if (root == NULL) {
@@ -87,6 +89,7 @@ static cJSON *CreateRuntimes(const char *runtimePath)
         fprintf(stderr, "runtimePath pointer is null!\n");
         return NULL;
     }
+
     cJSON *ascendRuntime = NULL;
     ascendRuntime = CreateAscendRuntimeInfo(runtimePath);
     if (ascendRuntime == NULL) {
@@ -111,8 +114,9 @@ static int DelJsonContent(cJSON *root, const char *key)
 {
     if (root == NULL || key == NULL) {
         fprintf(stderr, "userInfo  pointer is null!\n");
-        return NULL;
+        return -1;
     }
+
     cJSON *existItem = NULL;
     existItem = cJSON_GetObjectItem(root, key);
     if (existItem == NULL) {
@@ -136,6 +140,7 @@ static cJSON *CreateContent(const char *runtimePath)
         fprintf(stderr, "runtimePath pointer is null!\n");
         return NULL;
     }
+
     /* 插入ascend runtime */
     cJSON *runtimes = NULL;
     runtimes = CreateRuntimes(runtimePath);
@@ -174,6 +179,7 @@ static cJSON *ModifyContent(FILE *pf, const char *runtimePath)
         fprintf(stderr, "file pointer or runtimePath pointer is null!\n");
         return NULL;
     }
+
     char jsonStr[MAX_JSON_FILE_SIZE] = {0x0};
     ReadJsonFile(pf, &jsonStr[0], MAX_JSON_FILE_SIZE);
 
@@ -231,6 +237,7 @@ static cJSON *RemoveContent(FILE *pf)
         fprintf(stderr, "file pointer is null!\n");
         return NULL;
     }
+
     char jsonStr[MAX_JSON_FILE_SIZE] = {0x0};
     ReadJsonFile(pf, &jsonStr[0], MAX_JSON_FILE_SIZE);
 
@@ -269,10 +276,11 @@ static cJSON *RemoveContent(FILE *pf)
 
 static int DetectAndCreateJsonFile(const char *filePath, const char *tempPath, const char *runtimePath)
 {
-    if (filePath = NULL || tempPath = NULL || runtimePath = NULL) {
-        fprintf(stderr, "filePath Pointer or tempPath or runtimePath are null!\n");
+    if (filePath == NULL || tempPath == NULL || runtimePath == NULL) {
+        fprintf(stderr, "filePath, tempPath or runtimePath are null!\n");
         return -1;
     }
+    
     cJSON *root = NULL;
     FILE *pf = NULL;
     pf = fopen(filePath, "r+");
@@ -310,9 +318,10 @@ static int DetectAndCreateJsonFile(const char *filePath, const char *tempPath, c
 static int CreateRevisedJsonFile(const char *filePath, const char *tempPath)
 {
     if (filePath == NULL || tempPath == NULL) {
-        fprintf(stderr, "filePath Pointer or tempPath are null!\n");
+        fprintf(stderr, "filePath or tempPath are null!\n");
         return -1;
     }
+
     FILE *pf = NULL;
     pf = fopen(filePath, "r+");
     if (pf == NULL) {