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| author | Namhyung Kim <namhyung@kernel.org> | 2020-09-15 12:18:17 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-09-15 09:22:21 -0300 |
| commit | 6f47ed6cd12a0ea9b55b19b5d6e4a3b490a97bdf (patch) | |
| tree | 40ded442b07adb209ccbadac84005d8a91165579 /tools/perf | |
| parent | 27adafcda3d8b8a818e85d58eea95b85b5f513f9 (diff) | |
| download | linux-stable-6f47ed6cd12a0ea9b55b19b5d6e4a3b490a97bdf.tar.gz linux-stable-6f47ed6cd12a0ea9b55b19b5d6e4a3b490a97bdf.tar.bz2 linux-stable-6f47ed6cd12a0ea9b55b19b5d6e4a3b490a97bdf.zip | |
perf metric: Do not free metric when failed to resolve
It's dangerous to free the original metric when it's called from
resolve_metric() as it's already in the metric_list and might have other
resources too. Instead, it'd better let them bail out and be released
properly at the later stage.
So add a check when it's called from metricgroup__add_metric() and
release it. Also make sure that mp is set properly.
Fixes: 83de0b7d535de ("perf metric: Collect referenced metrics in struct metric_ref_node")
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200915031819.386559-10-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/metricgroup.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index c8904e471a71..ab5030fcfed4 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -672,7 +672,6 @@ static int __add_metric(struct list_head *metric_list, m->has_constraint = metric_no_group || metricgroup__has_constraint(pe); INIT_LIST_HEAD(&m->metric_refs); m->metric_refs_cnt = 0; - *mp = m; parent = expr_ids__alloc(ids); if (!parent) { @@ -685,6 +684,7 @@ static int __add_metric(struct list_head *metric_list, free(m); return -ENOMEM; } + *mp = m; } else { /* * We got here for the referenced metric, via the @@ -719,8 +719,11 @@ static int __add_metric(struct list_head *metric_list, * all the metric's IDs and add it to the parent context. */ if (expr__find_other(pe->metric_expr, NULL, &m->pctx, runtime) < 0) { - expr__ctx_clear(&m->pctx); - free(m); + if (m->metric_refs_cnt == 0) { + expr__ctx_clear(&m->pctx); + free(m); + *mp = NULL; + } return -EINVAL; } |