server: return the actual error when conn panic (#18494)

Co-authored-by: ti-srebot <66930949+ti-srebot@users.noreply.github.com>
pingcap · Jul 13, 2020 · 165bdfd · 165bdfd
1 parent b13fdb7
commit 165bdfd
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/server/conn.go b/server/conn.go
@@ -669,6 +669,8 @@ func (cc *clientConn) Run(ctx context.Context) {
 				zap.String("err", fmt.Sprintf("%v", r)),
 				zap.String("stack", string(buf)),
 			)
+			err := cc.writeError(errors.New(fmt.Sprintf("%v", r)))
+			terror.Log(err)
 			metrics.PanicCounter.WithLabelValues(metrics.LabelSession).Inc()
 		}
 		if atomic.LoadInt32(&cc.status) != connStatusShutdown {