1 files changed, 6 insertions, 1 deletions
diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 30177b7a19..3d2667dfa7 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -2667,9 +2667,14 @@ vm_call_bmethod_body(rb_execution_context_t *ec, struct rb_calling_info *calling
     rb_proc_t *proc;
     VALUE val;
     const struct rb_callcache *cc = cd->cc;
+    const rb_callable_method_entry_t *cme = vm_cc_cme(cc);
+
+    if (cme->def->body.bmethod.defined_ractor != rb_ec_ractor_ptr(ec)->self) {
+        rb_raise(rb_eRuntimeError, "defined in a different Ractor");
+    }
 
     /* control block frame */
-    GetProcPtr(vm_cc_cme(cc)->def->body.bmethod.proc, proc);
+    GetProcPtr(cme->def->body.bmethod.proc, proc);
     val = rb_vm_invoke_bmethod(ec, proc, calling->recv, calling->argc, argv, calling->kw_splat, calling->block_handler, vm_cc_cme(cc));
 
     return val;