diff --git a/valgrind-3.10-s390-spechelper.patch b/valgrind-3.10-s390-spechelper.patch
new file mode 100644
index 0000000..c4ffcab
--- /dev/null
+++ b/valgrind-3.10-s390-spechelper.patch
@@ -0,0 +1,25 @@
+commit d1d90974d5239151892742b11dd26cf12055aade
+Author: cborntra <cborntra@8f6e269a-dfd6-0310-a8e1-e2731360e62c>
+Date:   Thu Feb 5 11:05:10 2015 +0000
+
+    Fix bug 343802. We need to handle one more special case in the spechelper
+    
+    
+    git-svn-id: svn://svn.valgrind.org/vex/trunk@3083 8f6e269a-dfd6-0310-a8e1-e2731360e62c
+
+diff --git a/VEX/priv/guest_s390_helpers.c b/VEX/priv/guest_s390_helpers.c
+index 78ca2ef..df1f24b 100644
+--- a/VEX/priv/guest_s390_helpers.c
++++ b/VEX/priv/guest_s390_helpers.c
+@@ -1958,7 +1958,10 @@ guest_s390x_spechelper(const HChar *function_name, IRExpr **args,
+             return unop(Iop_1Uto32, binop(Iop_CmpNE64, cc_dep1, mkU64(0)));
+          }
+          if (cond == 4 || cond == 4 + 1) {
+-            return unop(Iop_1Uto32, binop(Iop_CmpLT64S, cc_dep1, mkU64(0)));
++             /* Special case cc_dep < 0. Only check the MSB to avoid bogus
++               memcheck complaints due to gcc magic. Fixes 343802
++             */
++            return unop(Iop_64to32, binop(Iop_Shr64, cc_dep1, mkU8(63)));
+          }
+          if (cond == 8 + 4 || cond == 8 + 4 + 1) {
+             return unop(Iop_1Uto32, binop(Iop_CmpLE64S, cc_dep1, mkU64(0)));
diff --git a/valgrind.spec b/valgrind.spec
index ad733fe..6268303 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: 3.10.1
-Release: 2%{?dist}
+Release: 3%{?dist}
 Epoch: 1
 License: GPLv2+
 URL: http://www.valgrind.org/
@@ -61,6 +61,9 @@ Patch4: valgrind-3.9.0-ldso-supp.patch
 # KDE#342795 Internal glibc __GI_mempcpy call should be intercepted
 Patch5: valgrind-3.10.1-mempcpy.patch
 
+# KDE#343802 - s390x memcheck reports spurious conditional jump
+Patch6: valgrind-3.10-s390-spechelper.patch
+
 %if %{build_multilib}
 # Ensure glibc{,-devel} is installed for both multilib arches
 BuildRequires: /lib/libc.so.6 /usr/lib/libc.so /lib64/libc.so.6 /usr/lib64/libc.so
@@ -164,6 +167,7 @@ Valgrind User Manual for details.
 %patch3 -p1
 %patch4 -p1
 %patch5 -p1
+%patch6 -p1
 
 %build
 # We need to use the software collection compiler and binutils if available.
@@ -312,6 +316,9 @@ echo ===============END TESTING===============
 %endif
 
 %changelog
+* Thu Feb 05 2015 Mark Wielaard <mjw@redhat.com> - 3.10.1-3
+- Add valgrind-3.10-s390-spechelper.patch.
+
 * Tue Jan 13 2015 Mark Wielaard <mjw@redhat.com> - 3.10.1-2
 - Add valgrind-3.10.1-mempcpy.patch.