diff --git a/valgrind-3.14.0-s390x-vec-facility-bit.patch b/valgrind-3.14.0-s390x-vec-facility-bit.patch
new file mode 100644
index 0000000..c00ed62
--- /dev/null
+++ b/valgrind-3.14.0-s390x-vec-facility-bit.patch
@@ -0,0 +1,32 @@
+commit 467c7c4c9665c0f8b41a4416722a027ebc05df2b
+Author: Andreas Arnez <arnez@linux.ibm.com>
+Date:   Mon Jan 21 14:10:00 2019 +0100
+
+    Bug 403552 s390x: Fix vector facility bit number
+    
+    The wrong bit number was used when checking for the vector facility.  This
+    can result in a fatal emulation error: "Encountered an instruction that
+    requires the vector facility.  That facility is not available on this
+    host."
+    
+    In many cases the wrong facility bit was usually set as well, hence
+    nothing bad happened.  But when running Valgrind within a Qemu/KVM guest,
+    the wrong bit was not (always?) set and the emulation error occurred.
+    
+    This fix simply corrects the vector facility bit number, changing it from
+    128 to 129.
+
+ 
+diff --git a/VEX/pub/libvex_s390x_common.h b/VEX/pub/libvex_s390x_common.h
+index a8a66b96b..8723ee21d 100644
+--- a/VEX/pub/libvex_s390x_common.h
++++ b/VEX/pub/libvex_s390x_common.h
+@@ -103,7 +103,7 @@
+ #define S390_FAC_MSA5    57  // message-security-assist 5
+ #define S390_FAC_TREXE   73  // transactional execution
+ #define S390_FAC_MSA4    77  // message-security-assist 4
+-#define S390_FAC_VX      128 // vector facility
++#define S390_FAC_VX      129 // vector facility
+ 
+ 
+ /*--------------------------------------------------------------*/
diff --git a/valgrind.spec b/valgrind.spec
index f150d1c..4064516 100644
--- a/valgrind.spec
+++ b/valgrind.spec
@@ -3,7 +3,7 @@
 Summary: Tool for finding memory management bugs in programs
 Name: %{?scl_prefix}valgrind
 Version: 3.14.0
-Release: 10%{?dist}
+Release: 11%{?dist}
 Epoch: 1
 License: GPLv2+
 URL: http://www.valgrind.org/
@@ -173,6 +173,9 @@ Patch34: valgrind-3.14.0-rsp-clobber.patch
 # commit 3528f8 Accept DW_TAG_subrange_type with DW_AT_count
 Patch35: valgrind-3.14.0-subrange_type-count.patch
 
+# KDE#403552 s390x: wrong facility bit checked for vector facility
+Patch36: valgrind-3.14.0-s390x-vec-facility-bit.patch
+
 
 %if %{build_multilib}
 # Ensure glibc{,-devel} is installed for both multilib arches
@@ -341,6 +344,7 @@ Valgrind User Manual for details.
 %patch33 -p1
 %patch34 -p1
 %patch35 -p1
+%patch36 -p1
 
 %build
 CC=gcc
@@ -575,6 +579,9 @@ fi
 %endif
 
 %changelog
+* Thu Jan 24 2019 Mark Wielaard <mjw@fedoraproject.org> - 3.14.0-11
+- Add valgrind-3.14.0-s390x-vec-facility-bit.patch.
+
 * Wed Jan  9 2019 Mark Wielaard <mjw@fedoraproject.org> - 3.14.0-10
 - Add valgrind-3.14.0-rsp-clobber.patch
 - Add valgrind-3.14.0-subrange_type-count.patch