diff --git a/source/os/src/osFile.c b/source/os/src/osFile.c
index 4f76dea5d3..b468f87af6 100644
--- a/source/os/src/osFile.c
+++ b/source/os/src/osFile.c
@@ -66,14 +66,15 @@ typedef struct TdFile {
 #define FILE_WITH_LOCK 1
 
 #ifdef BUILD_WITH_RAND_ERR
-#define STUB_RAND_IO_ERR(ret)                                \
-  if (tsEnableRandErr && (tsRandErrScope & RAND_ERR_FILE)) { \
-    uint32_t r = taosRand() % tsRandErrDivisor;              \
-    if ((r + 1) <= tsRandErrChance) {                        \
-      errno = EIO;                                           \
-      terrno = TAOS_SYSTEM_ERROR(errno);                     \
-      return (ret);                                          \
-    }                                                        \
+#define STUB_RAND_IO_ERR(ret)                                         \
+  if (tsEnableRandErr && (tsRandErrScope & RAND_ERR_FILE)) {          \
+    uint32_t r = taosRand() % tsRandErrDivisor;                       \
+    if ((r + 1) <= tsRandErrChance) {                                 \
+      errno = EIO;                                                    \
+      terrno = TAOS_SYSTEM_ERROR(errno);                              \
+      uError("random io error: %s, %s", tstrerror(terrno), __func__); \
+      return (ret);                                                   \
+    }                                                                 \
   }
 #else
 #define STUB_RAND_IO_ERR(ret)
diff --git a/source/os/src/osMemory.c b/source/os/src/osMemory.c
index 7e25d7c817..1c5963780a 100644
--- a/source/os/src/osMemory.c
+++ b/source/os/src/osMemory.c
@@ -308,6 +308,7 @@ void *taosMemoryCalloc(int64_t num, int64_t size) {
     uint32_t r = taosRand() % tsRandErrDivisor;
     if ((r + 1) <= tsRandErrChance) {
       terrno = TSDB_CODE_OUT_OF_MEMORY;
+      uError("random memory error: %s, %s", tstrerror(terrno), __func__);
       return NULL;
     }
   }