diff --git a/tools/process_dump/lperf/lperf_event_record.h b/tools/process_dump/lperf/lperf_event_record.h
index ce5ba1233ca7528cae2b23397ceb669b06885e54..49fffc516a36120d55428fc458f5478c809ab26c 100644
--- a/tools/process_dump/lperf/lperf_event_record.h
+++ b/tools/process_dump/lperf/lperf_event_record.h
@@ -59,7 +59,7 @@ public:
     bool Init(uint8_t* data);
     void Clear();
 protected:
-    void InitHeader(uint8_t* p);
+    void InitHeader(uint8_t* data);
 
 private:
     struct perf_event_header header_ = {};
@@ -76,12 +76,12 @@ private:
 };
 
 template<typename T>
-bool PopFromBinary(bool condition, uint8_t*& p, T& v, uint64_t& size);
+bool PopFromBinary(bool condition, uint8_t*& data, T& dest, uint64_t& size);
 
 template<typename T1, typename T2>
-bool PopFromBinary2(bool condition, uint8_t*& p, T1& v1, T2& v2, uint64_t& size);
+bool PopFromBinary2(bool condition, uint8_t*& data, T1& dest1, T2& dest2, uint64_t& size);
 
-bool SetPointerOffset(uint8_t*& p, uint64_t offset, uint64_t& size);
+bool SetPointerOffset(uint8_t*& data, uint64_t offset, uint64_t& size);
 
 #define NO_RETVAL /* retval */
 #ifndef CHECK_TRUE_AND_RET
diff --git a/tools/process_dump/lperf/lperf_events.cpp b/tools/process_dump/lperf/lperf_events.cpp
index 31b03c74f5e819b8a6097b4f56505d491810417e..9c701f8a6e4e78d692d324ce8e0a773c9ff1176f 100644
--- a/tools/process_dump/lperf/lperf_events.cpp
+++ b/tools/process_dump/lperf/lperf_events.cpp
@@ -56,7 +56,7 @@ struct LperfThreadInputArg {
 
 LperfEvents::LperfEvents()
 {
-    pageSize_ = sysconf(_SC_PAGESIZE);
+    pageSize_ = static_cast<unsigned int>(sysconf(_SC_PAGESIZE));
 }
 
 LperfEvents::~LperfEvents()
@@ -146,7 +146,7 @@ bool LperfEvents::AddRecordThreads()
     size_t count = std::min(tids_.size(), maxCount);
     threadInfo.tidCount = static_cast<unsigned int>(count);
     for (size_t i = 0; i < count; i++) {
-        threadInfo.tids[i] = tids_[i];
+        threadInfo.tids[i] = static_cast<unsigned int>(tids_[i]);
     }
     int err = ioctl(lperfFd_, static_cast<unsigned long>(LPERF_IOCTL_ADD_THREADS), &threadInfo);
     CHECK_ERR(err, "add lperf threads failed");
@@ -203,7 +203,7 @@ void LperfEvents::ReadRecordsFromMmaps()
     if (dataSize <= 0) {
         return;
     }
-    lperfMmap_.dataSize = dataSize;
+    lperfMmap_.dataSize = static_cast<size_t>(dataSize);
     while (GetHeaderFromMmap(lperfMmap_)) {
         GetRecordFromMmap(lperfMmap_);
     }
@@ -227,7 +227,7 @@ bool LperfEvents::RecordLoop()
             continue;
         }
         ReadRecordsFromMmaps();
-        if ((pollFds_[0].revents & POLLHUP) == POLLHUP) {
+        if ((static_cast<unsigned short>(pollFds_[0].revents) & POLLHUP) == POLLHUP) {
             DFXLOGE("poll status is POLLHUP, revents: %{public}d", pollFds_[0].revents);
             loopCondition = false;
         }
diff --git a/tools/process_dump/lperf/lperf_events.h b/tools/process_dump/lperf/lperf_events.h
index 29521b2292d1d5272676a1b56694cde2c4763365..e77a81ae8f8c5ceb3556278dbd981a4a6b40a939 100644
--- a/tools/process_dump/lperf/lperf_events.h
+++ b/tools/process_dump/lperf/lperf_events.h
@@ -44,13 +44,13 @@ public:
 
 private:
     struct MmapFd {
-        int fd;
+        int fd = 0;
         perf_event_mmap_page* mmapPage = nullptr;
         uint8_t *buf = nullptr;
         size_t bufSize = 0;
         size_t dataSize = 0;
 
-        perf_event_header header;
+        perf_event_header header = {};
     };
 
     bool PrepareFdEvents();
@@ -62,7 +62,7 @@ private:
     bool PerfEventsEnable(bool enable);
     bool RecordLoop();
 
-    MmapFd lperfMmap_;
+    MmapFd lperfMmap_ = {};
     ProcessRecordCB recordCallBack_;
 
     int lperfFd_ = -1;
diff --git a/tools/process_dump/lperf/lperf_record.cpp b/tools/process_dump/lperf/lperf_record.cpp
index 760d76f1950cdd48f35421fa4388ef5687c1d1b7..93c5a8bf54dd12ba36caa3bd3e61506413c5c0d8 100644
--- a/tools/process_dump/lperf/lperf_record.cpp
+++ b/tools/process_dump/lperf/lperf_record.cpp
@@ -93,6 +93,9 @@ void LperfRecord::PrepareLperfEvent()
 void LperfRecord::SymbolicRecord(LperfRecordSample& record)
 {
     CHECK_TRUE_AND_RET(record.data_.tid > 0, NO_RETVAL, "Symbolic invalid Record, tid: %d", record.data_.tid);
+    const uint64_t maxNr = 51;
+    CHECK_TRUE_AND_RET(record.data_.nr > 0 && record.data_.nr < maxNr,
+                       NO_RETVAL, "Symbolic invalid Record, nr: %llu", record.data_.nr);
     std::vector<uintptr_t> pcs;
     for (uint64_t i = 0; i < record.data_.nr; i++) {
         if (record.data_.ips[i] != PERF_CONTEXT_USER) {