From 5d9946c3e5e38e07ab7019db9413a96807a325f2 Mon Sep 17 00:00:00 2001 From: Thomas Richter Date: Mon, 23 Apr 2018 16:29:40 +0200 Subject: perf record: Fix s390 undefined record__auxtrace_init() return value Command 'perf record' calls: cmd_report() record__auxtrace_init() auxtrace_record__init() On s390 function auxtrace_record__init() returns random return value due to missing initialization. This sometime causes 'perf record' to exit immediately without error message and creating a perf.data file. Fix this by setting error the return code to zero before returning from platform specific functions which may not set the error code in call cases. Signed-off-by: Thomas Richter Cc: Heiko Carstens Cc: Hendrik Brueckner Cc: Martin Schwidefsky Link: http://lkml.kernel.org/r/20180423142940.21143-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/arch/s390/util/auxtrace.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools') diff --git a/tools/perf/arch/s390/util/auxtrace.c b/tools/perf/arch/s390/util/auxtrace.c index 6cb48e4cffd9..3afe8256eff2 100644 --- a/tools/perf/arch/s390/util/auxtrace.c +++ b/tools/perf/arch/s390/util/auxtrace.c @@ -87,6 +87,7 @@ struct auxtrace_record *auxtrace_record__init(struct perf_evlist *evlist, struct perf_evsel *pos; int diagnose = 0; + *err = 0; if (evlist->nr_entries == 0) return NULL; -- cgit v1.2.3-59-g8ed1b