diff --git a/extensions.html b/extensions.html
index 446c761..4e87dde 100644
--- a/extensions.html
+++ b/extensions.html
@@ -803,7 +803,6 @@
 <br>
 <a name=CACHEUTILS>
 <li>Author: Nikolay Borisov&nbsp;&nbsp;&lt;n.borisov.lkml@gmail.com></li>
-<a name=FP>
 </td>
 </pre>
 </tr>
@@ -831,11 +830,37 @@
 Package website: <A HREF="https://github.com/k-hagio/crash-cacheutils">https://github.com/k-hagio/crash-cacheutils</A>
 </li>
 <br>
-<a name=NEXT_EXTENSION_NAME>
+<a name=PAGEOWNER>
 <li>Author: Kazuhito Hagio&nbsp;&nbsp;&lt;k-hagio-ab@nec.com></li>
-<a name=FP> 
 </td>
-</pre>
+</tr>
+
+<tr>
+<td ALIGN=CENTER>
+  <tt><b><A HREF="https://raw.githubusercontent.com/k-hagio/crash-pageowner/main/page_owner.c">page_owner.c</a></b></tt>
+</td>
+<td ALIGN=CENTER VALIGN=CENTER>
+  <tt><b><A HREF="https://github.com/k-hagio/crash-pageowner?tab=readme-ov-file#help-pages">owner</a></b></tt>
+</td>
+<td>
+  <ul>
+    <li>Display <A HREF="https://www.kernel.org/doc/html/latest/mm/page_owner.html">page owner</A> information</li>
+    <br>
+    <li>To build the module from the top-level <I>crash-&lt;version&gt</I> directory, enter:
+      <br>
+      <tt>&nbsp;&nbsp;$ cp <i>&lt;path-to></i>/<A HREF="https://raw.githubusercontent.com/k-hagio/crash-pageowner/main/page_owner.c">page_owner.c</a> extensions</tt><br>
+      <tt>&nbsp;&nbsp;$ make extensions</tt><br>
+      <br>
+    </li>
+    <li>Package website: <A HREF="https://github.com/k-hagio/crash-pageowner">https://github.com/k-hagio/crash-pageowner</A></li>
+    <br>
+    <li>As of April 2024, tested/supported only on RHEL8/RHEL9 and not sure which upstream kernel is supported.
+        For the latest information, see the package website above.</li>
+    <br>
+    <a name=NEXT_EXTENSION_NAME>
+    <li>Author: Kazuhito Hagio&nbsp;&nbsp;&lt;k-hagio-ab@nec.com></li>
+  </ul>
+</td>
 </tr>