fix smp hang

src/gausskernel/process/tcop/postgres.cpp

@@ -8739,6 +8739,7 @@ int PostgresMain(int argc, char* argv[], const char* dbname, const char* usernam
         t_thrd.postgres_cxt.mark_explain_analyze = false;
         t_thrd.postgres_cxt.mark_explain_only = false;
         u_sess->SPI_cxt.has_stream_in_cursor_or_forloop_sql = false;
+        u_sess->stream_cxt.enter_sync_point = false;
         if (unlikely(t_thrd.log_cxt.msgbuf->data != NULL)) {
             pfree_ext(t_thrd.log_cxt.msgbuf->data);
         }

src/test/regress/expected/privileges.out

@@ -363,6 +363,18 @@ SELECT atest1_privileges_test.*,atest5.one FROM atest1_privileges_test JOIN ates
  1 | two |   1
 (2 rows)
 
+set query_dop=4;
+SELECT * FROM atest1_privileges_test, atest5; -- fail
+ERROR:  permission denied for relation atest5
+DETAIL:  N/A
+SELECT atest1_privileges_test.*,atest5.one FROM atest1_privileges_test, atest5 order by 1, 2, 3; -- ok 
+ a |  b  | one 
+---+-----+-----
+ 1 | two |   1
+ 1 | two |   1
+(2 rows)
+
+set query_dop=1;
 SELECT one, two FROM atest5; -- fail
 ERROR:  permission denied for relation atest5
 DETAIL:  N/A

src/test/regress/sql/privileges.sql

@@ -211,6 +211,10 @@ SELECT atest1_privileges_test.* FROM atest1_privileges_test, atest5 order by 1,
 SELECT atest1_privileges_test.*,atest5.one FROM atest1_privileges_test, atest5 order by 1, 2, 3; -- ok 
 SELECT atest1_privileges_test.*,atest5.one FROM atest1_privileges_test JOIN atest5 ON (atest1_privileges_test.a = atest5.two); -- fail
 SELECT atest1_privileges_test.*,atest5.one FROM atest1_privileges_test JOIN atest5 ON (atest1_privileges_test.a = atest5.one); -- ok 
+set query_dop=4;
+SELECT * FROM atest1_privileges_test, atest5; -- fail
+SELECT atest1_privileges_test.*,atest5.one FROM atest1_privileges_test, atest5 order by 1, 2, 3; -- ok 
+set query_dop=1;
 SELECT one, two FROM atest5; -- fail
 
 SET SESSION AUTHORIZATION regressuser1 PASSWORD 'gauss@123';