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

pingcap#58035)

close pingcap#58016

pkg/bindinfo/BUILD.bazel

@@ -45,6 +45,7 @@ go_library(
         "//pkg/util/table-filter",
         "@com_github_pingcap_errors//:errors",
         "@com_github_pingcap_failpoint//:failpoint",
+        "@com_github_pkg_errors//:errors",
         "@org_golang_x_sync//singleflight",
         "@org_uber_go_zap//:zap",
     ],

pkg/bindinfo/binding.go

@@ -23,6 +23,7 @@ import (
 	"github.com/pingcap/tidb/pkg/sessionctx"
 	"github.com/pingcap/tidb/pkg/types"
 	"github.com/pingcap/tidb/pkg/util/hint"
+	"github.com/pkg/errors"
 )
 
 const (
@@ -130,7 +131,13 @@ func HasAvailableBinding(br Bindings) bool {
 
 // prepareHints builds ID and Hint for Bindings. If sctx is not nil, we check if
 // the BindSQL is still valid.
-func prepareHints(sctx sessionctx.Context, binding *Binding) error {
+func prepareHints(sctx sessionctx.Context, binding *Binding) (rerr error) {
+	defer func() {
+		if r := recover(); r != nil {
+			rerr = errors.Errorf("panic when preparing hints for binding %v, panic: %v", binding.BindSQL, r)
+		}
+	}()
+
 	p := parser.New()
 	if (binding.Hint != nil && binding.ID != "") || binding.Status == deleted {
 		return nil