diff --git a/interfaces/innerkits/backtrace/backtrace_local.cpp b/interfaces/innerkits/backtrace/backtrace_local.cpp
index b7cb5a700668c6779ca2d9c0ffd823853756995a..b803011a2eeddd415347a346282892f9e4ed11fe 100644
--- a/interfaces/innerkits/backtrace/backtrace_local.cpp
+++ b/interfaces/innerkits/backtrace/backtrace_local.cpp
@@ -49,7 +49,10 @@ bool GetBacktraceFramesByTid(std::vector<DfxFrame>& frames, int32_t tid, size_t
 #endif
     Unwinder unwinder(isNeedMaps);
     BacktraceLocalThread thread(tid);
-    bool ret = thread.Unwind(unwinder, fast, maxFrameNums, skipFrameNum + 1);
+    if (tid == BACKTRACE_CURRENT_THREAD) {
+        skipFrameNum++;
+    }
+    bool ret = thread.Unwind(unwinder, fast, maxFrameNums, skipFrameNum);
     frames = thread.GetFrames();
     return ret;
 }
@@ -59,7 +62,10 @@ bool GetBacktraceStringByTid(std::string& out, int32_t tid, size_t skipFrameNum,
                              size_t maxFrameNums, bool enableKernelStack)
 {
     std::vector<DfxFrame> frames;
-    bool ret = GetBacktraceFramesByTid(frames, tid, skipFrameNum + 1, fast, maxFrameNums);
+    if (tid == BACKTRACE_CURRENT_THREAD) {
+        skipFrameNum++;
+    }
+    bool ret = GetBacktraceFramesByTid(frames, tid, skipFrameNum, fast, maxFrameNums);
     if (!ret && enableKernelStack) {
         std::string msg = "";
         DfxThreadStack threadStack;
diff --git a/interfaces/innerkits/backtrace/backtrace_local_thread.cpp b/interfaces/innerkits/backtrace/backtrace_local_thread.cpp
index eabc96fea73d9815538c613b303d157815a3e30e..fd138df021aaa986c1bc6542e73556fc6886bdea 100644
--- a/interfaces/innerkits/backtrace/backtrace_local_thread.cpp
+++ b/interfaces/innerkits/backtrace/backtrace_local_thread.cpp
@@ -64,7 +64,7 @@ bool BacktraceLocalThread::Unwind(Unwinder& unwinder, bool fast, size_t maxFrame
         return ret;
     }
 
-    ret = unwinder.UnwindLocalWithTid(tid_, maxFrameNum, skipFrameNum + 1);
+    ret = unwinder.UnwindLocalWithTid(tid_, maxFrameNum, skipFrameNum);
 #ifdef __aarch64__
     Unwinder::GetLocalFramesByPcs(frames_, unwinder.GetPcs());
 #else
diff --git a/test/systemtest/faultloggerd_system_test.cpp b/test/systemtest/faultloggerd_system_test.cpp
index eac82ee9f5812443b6b6f501560ca05b122844d9..d2c3b7008628d83b28ca2011d09b26536f329f3b 100644
--- a/test/systemtest/faultloggerd_system_test.cpp
+++ b/test/systemtest/faultloggerd_system_test.cpp
@@ -1759,12 +1759,12 @@ HWTEST_F(FaultLoggerdSystemTest, FaultLoggerdSystemTest127, TestSize.Level2)
             }
         } else {
             usleep(sleepTime);
-            kill(pid, SIGKILL);
+            kill(pid, SIGSEGV);
             int status = 0;
             waitpid(pid, &status, 0);
             ASSERT_TRUE(WIFSIGNALED(status));
             int signal = WTERMSIG(status);
-            ASSERT_EQ(signal, SIGKILL);
+            ASSERT_EQ(signal, SIGSEGV);
             sleepTime = sleepTime + deviation;
         }
     }
diff --git a/test/unittest/faultloggerd/faultlogger_server_test.cpp b/test/unittest/faultloggerd/faultlogger_server_test.cpp
index 436e189785af5e87bc12dc92b127c45f86364941..f2d6a14b2aca9eb0b578392ca26e21f43866e91a 100644
--- a/test/unittest/faultloggerd/faultlogger_server_test.cpp
+++ b/test/unittest/faultloggerd/faultlogger_server_test.cpp
@@ -44,7 +44,6 @@ namespace HiviewDFX {
 namespace {
 constexpr int32_t SOCKET_TIMEOUT = 1;
 constexpr int32_t FD_PAIR_NUM = 2;
-constexpr const char* const FAULTLOGGERD_SERVER_TEST_TAG = "FAULTLOGGERD_SERVER_TEST";
 void FillRequestHeadData(RequestDataHead& head, int8_t clientType)
 {
     head.clientType = clientType;
diff --git a/tools/crash_validator/crash_validator.cpp b/tools/crash_validator/crash_validator.cpp
index 30125a9fafeebd2f030fed65c2d93658cfd3798d..25cac3ff9924eae9505e733fa6d961943bf9d0e0 100644
--- a/tools/crash_validator/crash_validator.cpp
+++ b/tools/crash_validator/crash_validator.cpp
@@ -250,7 +250,12 @@ void CrashValidator::CheckOutOfDateEvents()
 {
     std::vector<CrashEvent>::iterator it = pendingEvents_.begin();
     while (it != pendingEvents_.end()) {
-        uint64_t now = time(nullptr);
+        int64_t nowTime = time(nullptr);
+        if (nowTime < 0) {
+            printf("Failed to get the time.\n");
+            return;
+        }
+        uint64_t now = static_cast<uint64_t>(nowTime);
         uint64_t eventTime = it->time;
         if (eventTime > now) {
             eventTime = eventTime / 1000; // 1000 : convert to second