diff --git a/test/-ext-/debug/test_debug.rb b/test/-ext-/debug/test_debug.rb
index 3804714d0dce9b..bc41c1bb79beb1 100644
--- a/test/-ext-/debug/test_debug.rb
+++ b/test/-ext-/debug/test_debug.rb
@@ -56,4 +56,20 @@ def test_inspector_open_in_eval
     binds = inspector_in_eval
     binds_check binds, bug7635
   end
+
+  class MyRelation
+    include Enumerable
+
+    def each
+      yield :each_entry
+    end
+   end
+
+  def test_lazy_block
+    x = MyRelation.new.any? do
+      Bug::Debug.inspector
+      true
+    end
+    assert_equal true, x, '[Bug #15105]'
+  end
 end
diff --git a/version.h b/version.h
index e88b6ab32e1167..cc5f50a49b997b 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.5.4"
 #define RUBY_RELEASE_DATE "2018-11-28"
-#define RUBY_PATCHLEVEL 113
+#define RUBY_PATCHLEVEL 114
 
 #define RUBY_RELEASE_YEAR 2018
 #define RUBY_RELEASE_MONTH 11
diff --git a/vm_backtrace.c b/vm_backtrace.c
index d82d73d9634867..7d6c6753985a58 100644
--- a/vm_backtrace.c
+++ b/vm_backtrace.c
@@ -1201,6 +1201,9 @@ rb_debug_inspector_open(rb_debug_inspector_func_t func, void *data)
     enum ruby_tag_type state;
     volatile VALUE MAYBE_UNUSED(result);
 
+    /* escape all env to heap */
+    rb_vm_stack_to_heap(ec);
+
     dbg_context.ec = ec;
     dbg_context.cfp = dbg_context.ec->cfp;
     dbg_context.backtrace = ec_backtrace_location_ary(ec, 0, 0);
diff --git a/vm_exec.h b/vm_exec.h
index 29120975ce92d7..2f4b403e9a6547 100644
--- a/vm_exec.h
+++ b/vm_exec.h
@@ -36,7 +36,7 @@ typedef rb_iseq_t *ISEQ;
 #endif
 
 #define DEBUG_END_INSN() \
-  rb_vmdebug_debug_print_post(th, GET_CFP() SC_REGS());
+  rb_vmdebug_debug_print_post(ec, GET_CFP() SC_REGS());
 
 #else