diff --git a/components/exchook/los_exc_info.c b/components/exchook/los_exc_info.c
index 334d852a7d418c9d4308e79cf6d27ad108744fde..6dcd49734fb30bf03eb6dd533e655f1a8c28dc99 100644
--- a/components/exchook/los_exc_info.c
+++ b/components/exchook/los_exc_info.c
@@ -92,6 +92,9 @@ STATIC UINT32 OsExcSaveIntStatus(UINT32 type, VOID *arg)
     /* save IRQ Priority reg group */
     ret = memcpy_s(g_excContent, excContentEnd - (UINTPTR)g_excContent,
                    (const VOID *)OS_NVIC_PRI_BASE, OS_NVIC_INT_PRI_SIZE);
+    if (ret != EOK) {
+        return LOS_NOK;
+    }
     g_excContent = (UINT8 *)g_excContent + OS_NVIC_INT_PRI_SIZE;
 
     /* save Exception Priority reg group */
@@ -294,5 +297,3 @@ VOID OsExcMsgDumpInit(VOID)
     (VOID)LOS_RegExcHook(EXC_INTERRUPT, (ExcHookFn)OsExcMsgDump);
 }
 #endif
-
-
diff --git a/components/shell/include/show.h b/components/shell/include/show.h
index 8520d36915e8636d6aed8aa6bb0f5774f7f29a1e..61d9d78c5274b5e330f7ab98401badc8b10079aa 100644
--- a/components/shell/include/show.h
+++ b/components/shell/include/show.h
@@ -54,7 +54,7 @@ STATIC INLINE VOID SetErrno(INT32 errcode)
 STATIC INLINE VOID SetErr(INT32 errcode, const CHAR *errMessage)
 {
     SetErrno(errcode);
-    PRINTK(errMessage);
+    PRINTK("%s", errMessage);
 }
 
 #ifdef __cplusplus
diff --git a/components/shell/src/cmds/vfs_shellcmd.c b/components/shell/src/cmds/vfs_shellcmd.c
index 9210e3c5a1433d3a482e3ad8bc97ea812977a467..6a478b714f15e2945e55d305d87906ca14b3abba 100644
--- a/components/shell/src/cmds/vfs_shellcmd.c
+++ b/components/shell/src/cmds/vfs_shellcmd.c
@@ -130,7 +130,7 @@ STATIC CHAR *OsLsGetFullpath(const CHAR *path, struct dirent *pdirent)
             goto exit_with_nomem;
         }
 
-        ret = snprintf_s(fullpath, pathLen, pathLen, "%s/%s", path, pdirent->d_name);
+        ret = snprintf_s(fullpath, pathLen, pathLen - 1, "%s/%s", path, pdirent->d_name);
         if (ret < 0) {
             free(fullpath);
             return NULL;
diff --git a/targets/riscv_nuclei_demo_soc_gcc/SoC/demosoc/Common/Include/demosoc_i2c.h b/targets/riscv_nuclei_demo_soc_gcc/SoC/demosoc/Common/Include/demosoc_i2c.h
index 86428dbe5bb91bb9041904f23c194eea930d2c91..c3e887f0adcddc9a7b5459c0574cce539997a723 100644
--- a/targets/riscv_nuclei_demo_soc_gcc/SoC/demosoc/Common/Include/demosoc_i2c.h
+++ b/targets/riscv_nuclei_demo_soc_gcc/SoC/demosoc/Common/Include/demosoc_i2c.h
@@ -34,21 +34,6 @@ extern "C" {
 #define I2C_SR_AL               (1 << 5)
 #define I2C_SR_TIP              (1 << 1)//0:transfer complete; 1:transferring
 #define I2C_SR_IF               (1 << 0)
-#if 0
-/*fileds*/
-
-#define I2C_CTR_ENABLE          1
-#define I2C_CTR_DISABLE         0
-
-#define I2C_CTR_INTEN           1
-#define I2C_CTR_INTDIS          0
-
-#define I2C_TXR_RFS             1       //read from slave
-#define I2C_TXR_WTS             0       //write to slave
-
-#define I2C
-
-#endif
 
 #ifdef __cplusplus
 }
diff --git a/testsuites/sample/kernel/hwi/llt_los_hwi_035.c b/testsuites/sample/kernel/hwi/llt_los_hwi_035.c
index 6da5a92c93cfa899998d3d2eded514919df88776..3adfec9d62505620322c3158a581fae0b839fd8b 100644
--- a/testsuites/sample/kernel/hwi/llt_los_hwi_035.c
+++ b/testsuites/sample/kernel/hwi/llt_los_hwi_035.c
@@ -68,11 +68,6 @@ static UINT32 Testcase(VOID)
     ICUNIT_ASSERT_EQUAL(ret, LOS_OK, ret);
 
     return LOS_OK;
-
-    LOS_TaskDelete(g_testTaskIdHwi);
-    TestHwiDelete(HWI_NUM_TEST);
-
-    return LOS_OK;
 }
  /*
 **********
diff --git a/testsuites/sample/kernel/lms/It_los_lms_023.c b/testsuites/sample/kernel/lms/It_los_lms_023.c
index 310ee2c5366b525eb48a72284862f536d608c8e1..71076cddfb43f3a6b268763515e42865fb5b9e51 100644
--- a/testsuites/sample/kernel/lms/It_los_lms_023.c
+++ b/testsuites/sample/kernel/lms/It_los_lms_023.c
@@ -54,6 +54,7 @@ static UINT32 TestCase(VOID)
     buf[7] = '\0'; /* end index 7 */
     PRINTK("%d\n", __LINE__);
     ret = strcat_s(buf, 100, src); /* Check LMS detection information when the strcat dest max set 100 overflows. */
+    ICUNIT_ASSERT_NOT_EQUAL(ret, 0, ret);
     PRINTK("%d\n", __LINE__);
     ret = LOS_MemFree(g_testLmsPool, buf);
     ICUNIT_ASSERT_NOT_EQUAL(ret, LOS_NOK, ret);
diff --git a/testsuites/sample/kernel/queue/It_los_queue_head_015.c b/testsuites/sample/kernel/queue/It_los_queue_head_015.c
index 1c6db5fec0bd65f7375d27dd4427fc40a044f579..262718bf16ea7138b1206cd9e4245cf49533e865 100644
--- a/testsuites/sample/kernel/queue/It_los_queue_head_015.c
+++ b/testsuites/sample/kernel/queue/It_los_queue_head_015.c
@@ -52,8 +52,6 @@ static UINT32 Testcase(VOID)
     ret = LOS_QueueRead(queueID[limit - 1], &buff2, QUEUE_BASE_MSGSIZE, 0);
     ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT);
 
-    ret = LOS_QueueCreate("Q1", QUEUE_BASE_NUM, &queueID[index], 0, QUEUE_BASE_MSGSIZE);
-
     ret = LOS_QueueCreate("Q1", QUEUE_BASE_NUM, &queueID[index], 0, QUEUE_BASE_MSGSIZE);
     ICUNIT_GOTO_NOT_EQUAL(ret, LOS_OK, ret, EXIT);
 
diff --git a/testsuites/unittest/fuzz/src/socket/net_fuzz.c b/testsuites/unittest/fuzz/src/socket/net_fuzz.c
index 301e371b105b29aa49a0c721d215d46660c7eac2..768049648b2d31a5f27cac960023b569ae580122 100644
--- a/testsuites/unittest/fuzz/src/socket/net_fuzz.c
+++ b/testsuites/unittest/fuzz/src/socket/net_fuzz.c
@@ -226,7 +226,7 @@ static void *SampleTcpServer()
     sfd = accept(lsfd, (struct sockaddr *)&clnAddr, &num2);
 
     int num3 = *(int *)DT_SetGetS32(&g_element[NUM_2_INDEX], 0);
-    ret = recv(lsfd, buf, sizeof(buf), num3);
+    (void)recv(lsfd, buf, sizeof(buf), num3);
 
     int num4 = *(int *)DT_SetGetS32(&g_element[NUM_3_INDEX], 0);
     ret = shutdown(sfd, num4);