diff --git a/debian/changelog b/debian/changelog
index 898792d8..a055f0af 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -29,6 +29,14 @@ llvm-toolchain-snapshot (1:4.0~svn282142-1~exp1) experimental; urgency=medium
 
  -- Sylvestre Ledru <sylvestre@debian.org>  Mon, 24 Oct 2016 10:45:07 +0200
 
+llvm-toolchain-3.9 (1:3.9-6) unstable; urgency=medium
+
+  * Fix segfaults in the memory sanitizers (Closes: #842642)
+    Caused by the newer glibc. Many thanks for Nobert Lange for everything
+  * Enable the sanitizers testsuite
+
+ -- Sylvestre Ledru <sylvestre@debian.org>  Fri, 11 Nov 2016 17:01:38 +0100
+
 llvm-toolchain-3.9 (1:3.9-5) unstable; urgency=medium
 
   * d/p/0011-SimplifyCFG-Hoisting-invalidates-metadata.patch: Also apply bug 29163
diff --git a/debian/patches/series b/debian/patches/series
index 8743752c..e0c42358 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -42,4 +42,3 @@ fix-scan-view-path.diff
 #0011-SimplifyCFG-Hoisting-invalidates-metadata.patch
 clang-fix-cmpxchg8-detection-on-i386.patch
 lldb-addversion-suffix-to-llvm-server-exec.patch
-
diff --git a/debian/patches/silent-llvm-symbolizer.diff b/debian/patches/silent-llvm-symbolizer.diff
deleted file mode 100644
index 4834dae6..00000000
--- a/debian/patches/silent-llvm-symbolizer.diff
+++ /dev/null
@@ -1,12 +0,0 @@
-Index: llvm-toolchain-3.8-3.8.1/test/tools/llvm-symbolizer/print_context.c
-===================================================================
---- llvm-toolchain-3.8-3.8.1.orig/test/tools/llvm-symbolizer/print_context.c
-+++ llvm-toolchain-3.8-3.8.1/test/tools/llvm-symbolizer/print_context.c
-@@ -1,6 +1,7 @@
- // REQUIRES: x86_64-linux
- // RUN: %host_cc -O0 -g %s -o %t 2>&1
- // RUN: %t 2>&1 | llvm-symbolizer -print-source-context-lines=5 -obj=%t | FileCheck %s --check-prefix=CHECK
-+// XFAIL: *
- 
- #include <stdio.h>
- 
diff --git a/debian/rules b/debian/rules
index 70757600..97866221 100755
--- a/debian/rules
+++ b/debian/rules
@@ -477,6 +477,9 @@ ifeq (${LLD_ENABLE},yes)
 	$(MAKE) $(NJOBS) -C $(TARGET_BUILD) check-lld || true
 endif
 
+# Sanitizer
+	$(MAKE) $(NJOBS) -C $(TARGET_BUILD) check-sanitizer || true
+
 # LLDB tests (CMake)
 ifeq (,$(filter $(DEB_HOST_ARCH), $(LLDB_DISABLE_ARCHS) armhf armel))
 ifneq (,$(filter codecoverage,$(DEB_BUILD_OPTIONS)))