diff --git a/contrib/CMakeLists.txt b/contrib/CMakeLists.txt
index df69eb8aa1092dbb3730bdc64eaaf130c56aa32e..926fbc8957590511b476ed163ac3df3430cceb6d 100644
--- a/contrib/CMakeLists.txt
+++ b/contrib/CMakeLists.txt
@@ -98,6 +98,12 @@ if(${BUILD_WITH_NURAFT})
     cat("${TD_SUPPORT_DIR}/nuraft_CMakeLists.txt.in" ${CONTRIB_TMP_FILE})
 endif(${BUILD_WITH_NURAFT})
 
+# addr2line
+if(${BUILD_ADDR2LINE})
+    cat("${TD_SUPPORT_DIR}/libdwarf_CMakeLists.txt.in" ${CONTRIB_TMP_FILE})
+    cat("${TD_SUPPORT_DIR}/addr2line_CMakeLists.txt.in" ${CONTRIB_TMP_FILE})
+endif(${BUILD_ADDR2LINE})
+
 # download dependencies
 configure_file(${CONTRIB_TMP_FILE} "${TD_CONTRIB_DIR}/deps-download/CMakeLists.txt")
 execute_process(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
@@ -327,7 +333,48 @@ if(${BUILD_WITH_SQLITE})
     endif(NOT TD_WINDOWS)
 endif(${BUILD_WITH_SQLITE})
 
-# pthread
+# addr2line
+if(${BUILD_ADDR2LINE})
+    check_include_file( "sys/types.h"     HAVE_SYS_TYPES_H) 
+    check_include_file( "sys/stat.h"      HAVE_SYS_STAT_H ) 
+    check_include_file( "inttypes.h"      HAVE_INTTYPES_H   ) 
+    check_include_file( "stddef.h"        HAVE_STDDEF_H   ) 
+    check_include_file( "stdlib.h"        HAVE_STDLIB_H   ) 
+    check_include_file( "string.h"        HAVE_STRING_H   ) 
+    check_include_file( "memory.h"        HAVE_MEMORY_H   ) 
+    check_include_file( "strings.h"       HAVE_STRINGS_H  ) 
+    check_include_file( "stdint.h"        HAVE_STDINT_H   )
+    check_include_file( "unistd.h"        HAVE_UNISTD_H   )
+    check_include_file( "sgidefs.h"       HAVE_SGIDEFS_H  )
+    check_include_file( "stdafx.h"        HAVE_STDAFX_H   )
+    check_include_file( "elf.h"           HAVE_ELF_H      ) 
+    check_include_file( "libelf.h"        HAVE_LIBELF_H   ) 
+    check_include_file( "libelf/libelf.h" HAVE_LIBELF_LIBELF_H) 
+    check_include_file( "alloca.h"        HAVE_ALLOCA_H   )
+    check_include_file( "elfaccess.h"     HAVE_ELFACCESS_H)
+    check_include_file( "sys/elf_386.h"   HAVE_SYS_ELF_386_H  )
+    check_include_file( "sys/elf_amd64.h" HAVE_SYS_ELF_AMD64_H)
+    check_include_file( "sys/elf_sparc.h" HAVE_SYS_ELF_SPARC_H)
+    check_include_file( "sys/ia64/elf.h"  HAVE_SYS_IA64_ELF_H )
+    set(VERSION 0.3.1)
+    set(PACKAGE_VERSION "\"${VERSION}\"") 
+    configure_file(libdwarf/cmake/config.h.cmake config.h)
+    file(GLOB_RECURSE LIBDWARF_SOURCES "libdwarf/src/lib/libdwarf/*.c")
+    add_library(libdwarf STATIC ${LIBDWARF_SOURCES})
+    set_target_properties(libdwarf PROPERTIES OUTPUT_NAME "libdwarf")
+    if(HAVE_LIBELF_H OR HAVE_LIBELF_LIBELF_H)
+        target_link_libraries(libdwarf PUBLIC libelf)
+    endif()
+    target_include_directories(libdwarf SYSTEM PUBLIC "libdwarf/src/lib/libdwarf" ${CMAKE_BINARY_DIR}/contrib)
+    file(READ "addr2line/addr2line.c" ADDR2LINE_CONTENT)
+    string(REPLACE "static int" "int" ADDR2LINE_CONTENT "${ADDR2LINE_CONTENT}")
+    string(REPLACE "static void" "void" ADDR2LINE_CONTENT "${ADDR2LINE_CONTENT}")
+    string(REPLACE "main(" "main_addr2line(" ADDR2LINE_CONTENT "${ADDR2LINE_CONTENT}")
+    file(WRITE "addr2line/addr2line.c" "${ADDR2LINE_CONTENT}")
+    add_library(addr2line STATIC "addr2line/addr2line.c")
+    target_link_libraries(addr2line PUBLIC libdwarf dl z)
+    target_include_directories(addr2line PUBLIC "libdwarf/src/lib/libdwarf" )
+endif(${BUILD_ADDR2LINE})
 
 
 # ================================================================================================
diff --git a/source/libs/catalog/src/catalog.c b/source/libs/catalog/src/catalog.c
index 6df80e99ee7d73c6cac3c5c6ec8c582a699082eb..03875fd28c1c8720a64c89453affd9d79f1cc690 100644
--- a/source/libs/catalog/src/catalog.c
+++ b/source/libs/catalog/src/catalog.c
@@ -2714,12 +2714,16 @@ typedef struct SCatalogReqObj {
 void* doExtractpayload(const SDataBuf* pMsg){}
 
 int32_t loadRemoteMetaCallback(void* param, const SDataBuf* pMsg, int32_t code) {
-  SCatalogReqObj* pRsp = param;
+  SCatalogReqObj* pRsp = (SCatalogReqObj*) param;
 
   // do handle the result.
   // serialize data in pMsg and set the result into pRsp->pResult
   pRsp->pResult = doExtractpayload(pMsg);
 
+  //todo
+
+
+
   // call user's callback function
   pRsp->userFp(pRsp->pResult, pRsp->pUserParam, code);
   return TSDB_CODE_SUCCESS;
@@ -2733,8 +2737,6 @@ int32_t catalogGetDBVgInfo_a(CatalogParamWrapper* pCatalogWrapper, __async_cb_fn
     return TSDB_CODE_QRY_OUT_OF_MEMORY;
   }
 
-  pMsgSendInfo->param = param;
-
   SCatalogReqObj* pCatalogReq = taosMemoryCalloc(1, sizeof(SCatalogReqObj));
   pCatalogReq->userFp = fp;
   pCatalogReq->pUserParam = param;