From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Richter Subject: [PATCH] perf record: Fix s390 random record__auxtrace_init return value Date: Mon, 23 Apr 2018 16:29:40 +0200 Message-ID: <20180423142940.21143-1-tmricht@linux.ibm.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, acme@kernel.org Cc: brueckner@linux.vnet.ibm.com, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, Thomas Richter List-Id: linux-perf-users.vger.kernel.org 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 return code to zero before return from platform specific function which does not set the error code in call cases. Signed-off-by: Thomas Richter --- tools/perf/arch/s390/util/auxtrace.c | 1 + 1 file changed, 1 insertion(+) 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; -- 2.14.3