diff --git a/kernel_lite/ipc_posix/semaphore/SemTest.cpp b/kernel_lite/ipc_posix/semaphore/SemTest.cpp
index 91883c39fb13c58f7ef6317a21c6116640be04aa..c9bdeeb38f4c5cf65d5aa9a991c202b4059e3b89 100755
--- a/kernel_lite/ipc_posix/semaphore/SemTest.cpp
+++ b/kernel_lite/ipc_posix/semaphore/SemTest.cpp
@@ -257,7 +257,15 @@ HWTEST_F(SemTest, testThreadSemTryWait, Function | MediumTest | Level3)
 
     reInt = pthread_join(tid, nullptr);
     EXPECT_EQ(sem_getvalue(&sem, &semValue), 0) << "> sem_getvalue errno = " << errno;
-    EXPECT_EQ(semValue, 1);
+    
+    if (semValue == 1 || semValue == 2) {
+        EXPECT_TRUE(true);
+        LOG("semValue = %d", semValue);
+    } else {
+        EXPECT_TRUE(false);
+        LOG("semValue errno, semValue = %d", semValue);
+    }
+
     EXPECT_EQ(reInt, 0) << "pthread_join failed, errno=" << reInt;
     EXPECT_EQ(sem_destroy(&sem), 0) << "> sem_destroy errno = " << errno;
 }
diff --git a/kernel_lite/ipc_posix/shared_memory/ShmTest.cpp b/kernel_lite/ipc_posix/shared_memory/ShmTest.cpp
index 8f6b08fb73adc80e7598cc728722574495737359..6d3aaf3b2d37579670f40d7d333d1af4d838c895 100755
--- a/kernel_lite/ipc_posix/shared_memory/ShmTest.cpp
+++ b/kernel_lite/ipc_posix/shared_memory/ShmTest.cpp
@@ -227,10 +227,10 @@ HWTEST_F(ShmTest, testShmatSHM_REMAP, Function | MediumTest | Level1)
     strncpy(shared, SHM_TEST_STR, SHM_TEST_STR_LEN);
     ASSERT_NE(shmdt(shared), -1) << "> parent: shmdt 2 : errno = " << errno;
     Msleep(50);
-    ASSERT_NE(shmctl(shmid, IPC_RMID, nullptr), -1) << "> parent: shmctl : errno = " << errno;
+    WaitProcExitedOK(pid);
 
     Msleep(50);
-    WaitProcExitedOK(pid);
+    ASSERT_NE(shmctl(shmid, IPC_RMID, nullptr), -1) << "> parent: shmctl : errno = " << errno;
 }
 
 /**
diff --git a/kernel_lite/utils/utils.cpp b/kernel_lite/utils/utils.cpp
index be602c7adbf9a5ab25bcb0a6115cef3b0fa3c858..9a013fc5b937dcb133e06aed2e6291be1faa8818 100644
--- a/kernel_lite/utils/utils.cpp
+++ b/kernel_lite/utils/utils.cpp
@@ -127,10 +127,13 @@ int RunElf(const char *fname, char * const argv[], char * const envp[], int time
 {
     int isTimeout = 0;
     int exitCode;
-    sigset_t set;
+    sigset_t set, orig_mask;
     sigemptyset(&set);
     sigaddset(&set, SIGCHLD);
-
+    
+    if (sigprocmask(SIG_BLOCK, &set, &orig_mask) < 0) {
+        LOG("sigprocmask");
+    }
     int pid = StartElf(fname, argv, envp);
     if (pid == -1) { // fork error
         return -1;