diff --git a/CHANGELOG.md b/CHANGELOG.md
index d89c4015..afcf04e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 * Rename to detail::is_invocable
 * Rename project to http-bench
 * Fix flat_streambuf
+* Add ub sanitizer blacklist
 
 WebSocket:
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 24e48ade..01cbf44b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -114,20 +114,25 @@ if ("${VARIANT}" STREQUAL "coverage")
       "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
     set(CMAKE_BUILD_TYPE RELWITHDEBINFO)
     set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lgcov")
+
 elseif ("${VARIANT}" STREQUAL "asan")
     set(CMAKE_CXX_FLAGS
       "${CMAKE_CXX_FLAGS} -fsanitize=address -fno-omit-frame-pointer")
     set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=address")
     set(CMAKE_BUILD_TYPE RELWITHDEBINFO)
+
 elseif ("${VARIANT}" STREQUAL "usan")
     set(CMAKE_CXX_FLAGS
-      "${CMAKE_CXX_FLAGS} -fsanitize=undefined -fno-omit-frame-pointer")
+      "${CMAKE_CXX_FLAGS} -fsanitize=undefined -fsanitize-blacklist=${PROJECT_SOURCE_DIR}/scripts/usan.supp -fno-omit-frame-pointer")
     set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=undefined")
     set(CMAKE_BUILD_TYPE RELWITHDEBINFO)
+
 elseif ("${VARIANT}" STREQUAL "debug")
     set(CMAKE_BUILD_TYPE DEBUG)
+
 elseif ("${VARIANT}" STREQUAL "release")
     set(CMAKE_BUILD_TYPE RELEASE)
+
 endif()
 
 include_directories (extras)
@@ -168,7 +173,7 @@ file(GLOB_RECURSE EXTRAS_INCLUDES
 
 add_subdirectory (examples)
 if (NOT OPENSSL_FOUND)
-    message("OpenSSL not found. Not building examples/ssl")
+    message("OpenSSL not found. Not building SSL tests and examples")
 else()
     add_subdirectory (examples/ssl)
 endif()
diff --git a/Jamroot b/Jamroot
index e5ef9f0a..40d3f770 100644
--- a/Jamroot
+++ b/Jamroot
@@ -72,7 +72,7 @@ variant msan
   :
     debug
   :
-    <cxxflags>"-fsanitize=memory -fno-omit-frame-pointer -fsanitize-memory-track-origins=2 -fsanitize-memory-use-after-dtor"
+    <cxxflags>"-fsanitize=memory -fsanitize-memory-track-origins=2 -fsanitize-memory-use-after-dtor -fno-omit-frame-pointer"
     <linkflags>"-fsanitize=memory"
   ;
 
@@ -80,7 +80,7 @@ variant usan
   :
     debug
   :
-    <cxxflags>"-fsanitize=undefined -fno-omit-frame-pointer"
+    <cxxflags>"-fsanitize=undefined -fsanitize-blacklist=scripts/usan.supp -fno-omit-frame-pointer"
     <linkflags>"-fsanitize=undefined"
   ;
 
diff --git a/scripts/usan.supp b/scripts/usan.supp
new file mode 100644
index 00000000..09bc1abe
--- /dev/null
+++ b/scripts/usan.supp
@@ -0,0 +1,29 @@
+# Remember that this blacklist file is GLOBAL to all sanitizers
+# Be therefore extremely careful when considering to add a sanitizer
+# filter here instead of using a runtime suppression
+#
+# Remember also that filters here quite literally completely
+# remove instrumentation altogether, so filtering here means
+# that sanitizers such as tsan will false positive on problems
+# introduced by code filtered here.
+#
+# The main use for this file is ubsan, as it's the only sanitizer
+# without a runtime suppression facility.
+#
+# Be ESPECIALLY careful when filtering out entire source files!
+# Try if at all possible to filter only functions using fun:regex
+# Remember you must use mangled symbol names with fun:regex
+
+# boost/lexical_cast.hpp:1625:43: runtime error: downcast of address 0x7fbb4fffbce8 which does not point to an object of type 'buffer_t' (aka 'parser_buf<std::basic_streambuf<char, char_traits<char> >, char>')
+# Fixed in Boost 1.63.0 https://svn.boost.org/trac/boost/ticket/12889
+#
+fun:*shl_input_streamable*
+
+## The well known ubsan failure in libstdc++ extant for years :)
+# Line 96:24: runtime error: load of value 4294967221, which is not a valid value for type 'std::_Ios_Fmtflags'
+#
+#fun:*_Ios_Fmtflags*
+
+# boost/any.hpp:259:16: runtime error: downcast of address 0x000004392e70 which does not point to an object of type 'any::holder<int>'
+#
+#fun:*any_cast*