diff options
| -rw-r--r-- | tools/perf/util/hist.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index d923a5bb7b48..8efbf58dc3d0 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -2436,7 +2436,7 @@ void hists__match(struct hists *leader, struct hists *other) { struct rb_root_cached *root; struct rb_node *nd; - struct hist_entry *pos, *pair; + struct hist_entry *pos, *pair, *pos_pair, *tmp_pair; if (symbol_conf.report_hierarchy) { /* hierarchy report always collapses entries */ @@ -2453,8 +2453,24 @@ void hists__match(struct hists *leader, struct hists *other) pos = rb_entry(nd, struct hist_entry, rb_node_in); pair = hists__find_entry(other, pos); - if (pair && list_empty(&pair->pairs.node)) + if (pair && list_empty(&pair->pairs.node)) { + list_for_each_entry_safe(pos_pair, tmp_pair, &pos->pairs.head, pairs.node) { + if (pos_pair->hists == other) { + /* + * XXX maybe decayed entries can appear + * here? but then we would have use + * after free, as decayed entries are + * freed see hists__delete_entry + */ + BUG_ON(!pos_pair->dummy); + list_del_init(&pos_pair->pairs.node); + hist_entry__delete(pos_pair); + break; + } + } + hist_entry__add_pair(pair, pos); + } } } |