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| author | Ian Rogers <irogers@google.com> | 2024-06-10 22:06:26 -0700 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2024-06-13 20:45:31 -0700 |
| commit | 6c1785cd75ef55a308701813330a162002ffe192 (patch) | |
| tree | b3c831a422bc3645aacbfce00a6a7b2fc4b60743 /tools/lib | |
| parent | 6828d6929b763499b7a8768c623891f5d4fca258 (diff) | |
| download | linux-6c1785cd75ef55a308701813330a162002ffe192.tar.gz linux-6c1785cd75ef55a308701813330a162002ffe192.tar.bz2 linux-6c1785cd75ef55a308701813330a162002ffe192.zip | |
perf record: Ensure space for lost samples
Previous allocation didn't account for sample ID written after the
lost samples event. Switch from malloc/free to a stack allocation.
Reported-by: Milian Wolff <milian.wolff@kdab.com>
Closes: https://lore.kernel.org/linux-perf-users/23879991.0LEYPuXRzz@milian-workstation/
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240611050626.1223155-1-irogers@google.com
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/perf/include/perf/event.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/lib/perf/include/perf/event.h b/tools/lib/perf/include/perf/event.h index ae64090184d3..37bb7771d914 100644 --- a/tools/lib/perf/include/perf/event.h +++ b/tools/lib/perf/include/perf/event.h @@ -77,6 +77,12 @@ struct perf_record_lost_samples { __u64 lost; }; +#define MAX_ID_HDR_ENTRIES 6 +struct perf_record_lost_samples_and_ids { + struct perf_record_lost_samples lost; + __u64 sample_ids[MAX_ID_HDR_ENTRIES]; +}; + /* * PERF_FORMAT_ENABLED | PERF_FORMAT_RUNNING | PERF_FORMAT_ID | PERF_FORMAT_LOST */ |