Index: buildbot/osuosl/master/config/builders.py
===================================================================
--- buildbot/osuosl/master/config/builders.py
+++ buildbot/osuosl/master/config/builders.py
@@ -156,6 +156,18 @@
                                             "-DCMAKE_BUILD_TYPE=Debug",
                                             "-DLLVM_LIT_ARGS='-v'"])},
 
+        {'name': "llvm-clang-x86_64-expensive-checks-ubuntu",
+         'slavenames': ["as-builder-4"],
+         'builddir':"llvm-clang-x86_64-expensive-checks-ubuntu",
+         'factory': UnifiedTreeBuilder.getCmakeWithNinjaBuildFactory(
+                      depends_on_projects=["llvm"],
+                      clean=True,
+                      extra_configure_args=["-DLLVM_ENABLE_EXPENSIVE_CHECKS=ON",
+                                            "-DLLVM_ENABLE_WERROR=OFF",
+                                            "-DCMAKE_BUILD_TYPE=Debug",
+                                            "-DCMAKE_CXX_FLAGS='-U_GLIBCXX_DEBUG'",
+                                            "-DLLVM_LIT_ARGS='-v -j32'"])},
+
         {'name' : "llvm-clang-x86_64-win-fast",
          'slavenames' : ["as-builder-3"],
          'builddir' : "llvm-clang-x86_64-win-fast",
Index: buildbot/osuosl/master/config/status.py
===================================================================
--- buildbot/osuosl/master/config/status.py
+++ buildbot/osuosl/master/config/status.py
@@ -147,7 +147,8 @@
                         "llvm-clang-lld-x86_64-scei-ps4-ubuntu-fast",
                         "clang-with-lto-ubuntu", "clang-with-thin-lto-ubuntu",
                         "llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast",
-                        "llvm-clang-x86_64-expensive-checks-win"],
+                        "llvm-clang-x86_64-expensive-checks-win",
+                        "llvm-clang-x86_64-expensive-checks-ubuntu"],
             addLogs=False),
         InformativeMailNotifier(
             fromaddr = "llvm.buildmaster@lab.llvm.org",
@@ -242,6 +243,7 @@
             extraRecipients = ["vvereschaka@accesssoftek.com"],
             subject="Build %(builder)s Failure",
             mode = "failing",
-            builders = ["llvm-clang-x86_64-win-fast","lld-x86_64-ubuntu-fast"],
+            builders = ["llvm-clang-x86_64-win-fast","lld-x86_64-ubuntu-fast",
+                        "llvm-clang-x86_64-expensive-checks-ubuntu"],
             addLogs=False),
         ]