From 886ff67c1d61f5752f6055c0a3af25e3de9947c5 Mon Sep 17 00:00:00 2001
From: Songhao Jia <gasoonjia@meta.com>
Date: Tue, 28 Oct 2025 12:34:34 -0700
Subject: [PATCH] rasie error when trying to write a tensor without legal
 memory space

Summary: as title

Differential Revision: D85693113
---
 devtools/etdump/etdump_flatcc.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/devtools/etdump/etdump_flatcc.cpp b/devtools/etdump/etdump_flatcc.cpp
index a6e0a105069..ba7af1b8c2f 100644
--- a/devtools/etdump/etdump_flatcc.cpp
+++ b/devtools/etdump/etdump_flatcc.cpp
@@ -714,6 +714,10 @@ Result<long> ETDumpGen::write_tensor_or_return_error(Tensor tensor) {
     return static_cast<size_t>(-1);
   }
 
+  if (tensor.const_data_ptr() == nullptr) {
+    return Error::InvalidArgument;
+  }
+
   if (!data_sink_) {
     return Error::InvalidArgument;
   }