1 files changed, 14 insertions, 1 deletions
diff --git a/sql/sql_class.cc b/sql/sql_class.cc
index a904023cbff..368ed897a4d 100644
--- a/sql/sql_class.cc
+++ b/sql/sql_class.cc
@@ -818,7 +818,20 @@ void THD::awake(THD::killed_state state_to_set)
     if (!slave_thread)
       thread_scheduler.post_kill_notification(this);
 #ifdef SIGNAL_WITH_VIO_CLOSE
-    close_active_vio();
+    if (this != current_thd)
+    {
+      /*
+        In addition to a signal, let's close the socket of the thread that
+        is being killed. This is to make sure it does not block if the
+        signal is lost. This needs to be done only on platforms where
+        signals are not a reliable interruption mechanism.
+
+        If we're killing ourselves, we know that we're not blocked, so this
+        hack is not used.
+      */
+
+      close_active_vio();
+    }
 #endif    
   }
   if (mysys_var)