document some newly reported test failures

chapter08/binutils.xml

@@ -171,15 +171,13 @@ cd       build</userinput></screen>
     <para>Test the results:</para>
 
 <screen><userinput remap="test">make -k check</userinput></screen>
-<!--
-    <para>Four tests related to zlib are known to fail.</para>
--->
-<!--
-    <para>Seven gold tests are known to fail with gcc-11.1.0</para>
 
-    <para>Four ld tests named <quote>Run property ...</quote> are known to
-    fail.</para>
- -->
+    <!-- Will be fixed in 2.39
+         https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=01ae03b -->
+    <para>One gold test, <filename>pr17704a_test</filename>, is known to
+    fail if <parameter>CONFIG_IA32_EMULATION</parameter> is disabled in the
+    kernel configuration of the host system.</para>
+
     <para>Install the package:</para>
 
 <screen><userinput remap="install">make tooldir=/usr install</userinput></screen>

chapter08/glibc.xml

@@ -179,6 +179,17 @@ esac</userinput></screen>
         are known to fail on relatively slow systems due to an internal
         timeout.</para>
       </listitem>
+
+      <!--
+        https://lists.linuxfromscratch.org/sympa/arc/lfs-support/2022-06/msg00022.html
+        https://sourceware.org/pipermail/libc-alpha/2022-June/139839.html
+      -->
+      <listitem>
+        <para>About 27 tests, for example <emphasis>elf/tst-pldd</emphasis>,
+        are known to fail if the kernel supports namespaces (see
+        <filename>namespaces(7)</filename> for details) but the host distro
+        has disabled them via sysctl.</para>
+      </listitem>
 <!--
       <listitem>
         <para>The <emphasis>rt/tst-cputimer{1,2,3}</emphasis> tests depend on