6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ian Rogers <irogers@xxxxxxxxxx>
[ Upstream commit c1149037f65bcf0334886180ebe3d5efcf214912 ]
Caught using reference count checking on perf top with
"--call-graph=lbr". After this no memory leaks were detected.
Fixes: 57849998e2cd ("perf report: Add processing for cycle histograms")
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
Cc: K Prateek Nayak <kprateek.nayak@xxxxxxx>
Cc: Ravi Bangoria <ravi.bangoria@xxxxxxx>
Cc: Sandipan Das <sandipan.das@xxxxxxx>
Cc: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Cc: German Gomez <german.gomez@xxxxxxx>
Cc: James Clark <james.clark@xxxxxxx>
Cc: Nick Terrell <terrelln@xxxxxx>
Cc: Sean Christopherson <seanjc@xxxxxxxxxx>
Cc: Changbin Du <changbin.du@xxxxxxxxxx>
Cc: liuwenyu <liuwenyu7@xxxxxxxxxx>
Cc: Yang Jihong <yangjihong1@xxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Miguel Ojeda <ojeda@xxxxxxxxxx>
Cc: Song Liu <song@xxxxxxxxxx>
Cc: Leo Yan <leo.yan@xxxxxxxxxx>
Cc: Kajol Jain <kjain@xxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Cc: Athira Rajeev <atrajeev@xxxxxxxxxxxxxxxxxx>
Cc: Yanteng Si <siyanteng@xxxxxxxxxxx>
Cc: Liam Howlett <liam.howlett@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231024222353.3024098-6-irogers@xxxxxxxxxx
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
tools/perf/util/hist.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 3dc8a4968beb9..ac8c0ef48a7f3 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -2676,8 +2676,6 @@ void hist__account_cycles(struct branch_stack *bs, struct addr_location *al,
/* If we have branch cycles always annotate them. */
if (bs && bs->nr && entries[0].flags.cycles) {
- int i;
-
bi = sample__resolve_bstack(sample, al);
if (bi) {
struct addr_map_symbol *prev = NULL;
@@ -2692,7 +2690,7 @@ void hist__account_cycles(struct branch_stack *bs, struct addr_location *al,
* Note that perf stores branches reversed from
* program order!
*/
- for (i = bs->nr - 1; i >= 0; i--) {
+ for (int i = bs->nr - 1; i >= 0; i--) {
addr_map_symbol__account_cycles(&bi[i].from,
nonany_branch_mode ? NULL : prev,
bi[i].flags.cycles);
@@ -2701,6 +2699,12 @@ void hist__account_cycles(struct branch_stack *bs, struct addr_location *al,
if (total_cycles)
*total_cycles += bi[i].flags.cycles;
}
+ for (unsigned int i = 0; i < bs->nr; i++) {
+ map__put(bi[i].to.ms.map);
+ maps__put(bi[i].to.ms.maps);
+ map__put(bi[i].from.ms.map);
+ maps__put(bi[i].from.ms.maps);
+ }
free(bi);
}
}
--
2.42.0
