This is a note to let you know that I've just added the patch titled
perf kwork: Fix incorrect and missing free atom in work_push_atom()
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-kwork-fix-incorrect-and-missing-free-atom-in-wo.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6494550c12c1a93475d0f91e76be57db0678e8f1
Author: Yang Jihong <yangjihong1@xxxxxxxxxx>
Date: Sat Aug 12 08:49:02 2023 +0000
perf kwork: Fix incorrect and missing free atom in work_push_atom()
[ Upstream commit d39710088d82ef100b33cdf4a9de3546fb0bb5df ]
1. Atoms are managed in page mode and should be released using atom_free()
instead of free().
2. When the event does not match, the atom needs to free.
Fixes: f98919ec4fccdacf ("perf kwork: Implement 'report' subcommand")
Reviewed-by: Ian Rogers <irogers@xxxxxxxxxx>
Signed-off-by: Yang Jihong <yangjihong1@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Ravi Bangoria <ravi.bangoria@xxxxxxx>
Cc: Sandipan Das <sandipan.das@xxxxxxx>
Cc: Yang Jihong <yangjihong1@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230812084917.169338-2-yangjihong1@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c
index 14bf7a8429e76..73b5dc099a8ae 100644
--- a/tools/perf/builtin-kwork.c
+++ b/tools/perf/builtin-kwork.c
@@ -406,12 +406,14 @@ static int work_push_atom(struct perf_kwork *kwork,
work = work_findnew(&class->work_root, &key, &kwork->cmp_id);
if (work == NULL) {
- free(atom);
+ atom_free(atom);
return -1;
}
- if (!profile_event_match(kwork, work, sample))
+ if (!profile_event_match(kwork, work, sample)) {
+ atom_free(atom);
return 0;
+ }
if (dst_type < KWORK_TRACE_MAX) {
dst_atom = list_last_entry_or_null(&work->atom_list[dst_type],
