diff --git a/[refs] b/[refs]
index 0b4d1354100f..b687bbe4d6ab 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3824a4e8da9791f4eed99d69bfcdb3b42f440426
+refs/heads/master: a4ab0c12975d1286b2696370f5e0576450609bf0
diff --git a/trunk/tools/perf/scripts/python/bin/failed-syscalls-by-pid-report b/trunk/tools/perf/scripts/python/bin/failed-syscalls-by-pid-report
index 8c128eff9c0a..30293545fcc2 100644
--- a/trunk/tools/perf/scripts/python/bin/failed-syscalls-by-pid-report
+++ b/trunk/tools/perf/scripts/python/bin/failed-syscalls-by-pid-report
@@ -2,7 +2,7 @@
 # description: system-wide failed syscalls, by pid
 # args: [comm]
 if [ $# -gt 0 ] ; then
-    if ! expr match "$1" "-" ; then
+    if ! expr match "$1" "-" > /dev/null ; then
 	comm=$1
 	shift
     fi