From: Jiri Olsa <jolsa@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>,
Thomas-Mich Richter <tmricht@linux.ibm.com>,
Kim Phillips <kim.phillips@arm.com>
Cc: lkml <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
David Ahern <dsahern@gmail.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
linux-perf-users@vger.kernel.org, brueckner@linux.vnet.ibm.com,
schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com
Subject: [PATCH 1/2] perf tests: Add event parsing error handling to parse events test
Date: Mon, 11 Jun 2018 11:34:21 +0200 [thread overview]
Message-ID: <20180611093422.1005-1-jolsa@kernel.org> (raw)
In-Reply-To: <0d25bc25-ed0b-81bb-c516-12fd25442427@linux.ibm.com>
Add missing error handling for parse_events calls in test_event
function that led to following segfault on s390:
running test 52 'intel_pt//u'
perf: Segmentation fault
...
/lib64/libc.so.6(vasprintf+0xe6) [0x3fffca3f106]
/lib64/libc.so.6(asprintf+0x46) [0x3fffca1aa96]
./perf(parse_events_add_pmu+0xb8) [0x80132088]
./perf(parse_events_parse+0xc62) [0x8019529a]
./perf(parse_events+0x98) [0x801341c0]
./perf(test__parse_events+0x48) [0x800cd140]
./perf(cmd_test+0x26a) [0x800bd44a]
test child interrupted
Adding the struct parse_events_error argument to parse_events
call. Also adding parse_events_print_error to get more details
on the parsing failures, like:
# perf test 6 -v
running test 52 'intel_pt//u'failed to parse event 'intel_pt//u', err 1, str 'Cannot find PMU `intel_pt'. Missing kernel support?'
event syntax error: 'intel_pt//u'
\___ Cannot find PMU `intel_pt'. Missing kernel support?
Link: http://lkml.kernel.org/n/tip-lmrdeivfr0m34t67c6i98p1f@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/tests/parse-events.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
index 7d4077068454..3b0bfdf5a594 100644
--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -1686,6 +1686,7 @@ static struct terms_test test__terms[] = {
static int test_event(struct evlist_test *e)
{
+ struct parse_events_error err = { 0 };
struct perf_evlist *evlist;
int ret;
@@ -1693,10 +1694,11 @@ static int test_event(struct evlist_test *e)
if (evlist == NULL)
return -ENOMEM;
- ret = parse_events(evlist, e->name, NULL);
+ ret = parse_events(evlist, e->name, &err);
if (ret) {
- pr_debug("failed to parse event '%s', err %d\n",
- e->name, ret);
+ pr_debug("failed to parse event '%s', err %d, str '%s'\n",
+ e->name, ret, err.str);
+ parse_events_print_error(&err, e->name);
} else {
ret = e->check(evlist);
}
--
2.13.6
next prev parent reply other threads:[~2018-06-11 9:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-08 13:17 [PATCH] perf test: Test 6 dumps core on s390 Thomas Richter
2018-06-08 14:53 ` Kim Phillips
2018-06-11 7:00 ` Thomas-Mich Richter
2018-06-11 9:07 ` Jiri Olsa
2018-06-11 9:34 ` Jiri Olsa [this message]
2018-06-11 9:34 ` [PATCH 2/2] perf tests: Add valid callback for parse-events test Jiri Olsa
2018-06-13 20:01 ` Arnaldo Carvalho de Melo
2018-06-26 6:53 ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2018-06-11 17:04 ` [PATCH 1/2] perf tests: Add event parsing error handling to parse events test Kim Phillips
2018-06-26 6:53 ` [tip:perf/urgent] " tip-bot for Jiri Olsa
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