planner: handle panic when loading bindings at startup (#58017) (#59062)

close #58016

Author: ti-chi-bot

.bazelversion

@@ -0,0 +1 @@
+7.4.1

bindinfo/BUILD.bazel

@@ -37,6 +37,7 @@ go_library(
         "//util/stmtsummary",
         "//util/table-filter",
         "//util/timeutil",
+        "@com_github_pingcap_errors//:errors",
         "@org_golang_x_exp//maps",
         "@org_uber_go_zap//:zap",
     ],

bindinfo/bind_record.go

@@ -18,6 +18,7 @@ import (
 	"time"
 	"unsafe"
 
+	"github.com/pingcap/errors"
 	"github.com/pingcap/tidb/metrics"
 	"github.com/pingcap/tidb/parser"
 	"github.com/pingcap/tidb/sessionctx"
@@ -161,7 +162,13 @@ func (br *BindRecord) FindBinding(hint string) *Binding {
 
 // prepareHints builds ID and Hint for BindRecord. If sctx is not nil, we check if
 // the BindSQL is still valid.
-func (br *BindRecord) prepareHints(sctx sessionctx.Context) error {
+func (br *BindRecord) prepareHints(sctx sessionctx.Context) (rerr error) {
+	defer func() {
+		if r := recover(); r != nil {
+			rerr = errors.Errorf("panic when preparing hints for binding panic: %v", r)
+		}
+	}()
+
 	p := parser.New()
 	for i, bind := range br.Bindings {
 		if (bind.Hint != nil && bind.ID != "") || bind.Status == deleted {