6.6-stable review patch. If anyone has any objections, please let me know.
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From: Ian Rogers irogers@google.com
[ 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@google.com Cc: K Prateek Nayak kprateek.nayak@amd.com Cc: Ravi Bangoria ravi.bangoria@amd.com Cc: Sandipan Das sandipan.das@amd.com Cc: Anshuman Khandual anshuman.khandual@arm.com Cc: German Gomez german.gomez@arm.com Cc: James Clark james.clark@arm.com Cc: Nick Terrell terrelln@fb.com Cc: Sean Christopherson seanjc@google.com Cc: Changbin Du changbin.du@huawei.com Cc: liuwenyu liuwenyu7@huawei.com Cc: Yang Jihong yangjihong1@huawei.com Cc: Masami Hiramatsu mhiramat@kernel.org Cc: Miguel Ojeda ojeda@kernel.org Cc: Song Liu song@kernel.org Cc: Leo Yan leo.yan@linaro.org Cc: Kajol Jain kjain@linux.ibm.com Cc: Andi Kleen ak@linux.intel.com Cc: Kan Liang kan.liang@linux.intel.com Cc: Athira Rajeev atrajeev@linux.vnet.ibm.com Cc: Yanteng Si siyanteng@loongson.cn Cc: Liam Howlett liam.howlett@oracle.com Cc: Paolo Bonzini pbonzini@redhat.com Link: https://lore.kernel.org/r/20231024222353.3024098-6-irogers@google.com Signed-off-by: Namhyung Kim namhyung@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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); } }