diff --git a/openmp/runtime/src/kmp.h b/openmp/runtime/src/kmp.h
--- a/openmp/runtime/src/kmp.h
+++ b/openmp/runtime/src/kmp.h
@@ -3132,6 +3132,7 @@
 
 extern int __kmp_register_root(int initial_thread);
 extern void __kmp_unregister_root(int gtid);
+extern void __kmp_unregister_library(void); // called by __kmp_internal_end()
 
 extern int __kmp_ignore_mppbeg(void);
 extern int __kmp_ignore_mppend(void);
diff --git a/openmp/runtime/src/kmp_runtime.cpp b/openmp/runtime/src/kmp_runtime.cpp
--- a/openmp/runtime/src/kmp_runtime.cpp
+++ b/openmp/runtime/src/kmp_runtime.cpp
@@ -98,7 +98,6 @@
 #if KMP_OS_WINDOWS
 static int __kmp_unregister_root_other_thread(int gtid);
 #endif
-static void __kmp_unregister_library(void); // called by __kmp_internal_end()
 static void __kmp_reap_thread(kmp_info_t *thread, int is_root);
 kmp_info_t *__kmp_thread_pool_insert_pt = NULL;
 
@@ -6360,7 +6359,12 @@
      each thread. If registration and unregistration go in different threads
      (omp_misc_other_root_exit.cpp test case), the name of registered_lib_env
      env var can not be found, because the name will contain different pid. */
+#if KMP_OS_UNIX && KMP_DYNAMIC_LIB // shared memory is with dynamic library
+  return __kmp_str_format("__KMP_REGISTERED_LIB_%d_%d", (int)getpid(),
+                          (int)getuid());
+#else
   return __kmp_str_format("__KMP_REGISTERED_LIB_%d", (int)getpid());
+#endif
 } // __kmp_reg_status_get
 
 void __kmp_register_library_startup(void) {
diff --git a/openmp/runtime/src/z_Linux_util.cpp b/openmp/runtime/src/z_Linux_util.cpp
--- a/openmp/runtime/src/z_Linux_util.cpp
+++ b/openmp/runtime/src/z_Linux_util.cpp
@@ -1149,6 +1149,7 @@
       if (__kmp_debug_buf) {
         __kmp_dump_debug_buffer();
       }
+      __kmp_unregister_library(); // cleanup shared memory
       KMP_MB(); // Flush all pending memory write invalidates.
       TCW_4(__kmp_global.g.g_abort, signo);
       KMP_MB(); // Flush all pending memory write invalidates.