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| author | Ian Rogers <irogers@google.com> | 2024-11-19 15:00:33 -0800 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2024-11-22 13:38:39 -0800 |
| commit | 62878b400f5b02416368eda361277c045c675466 (patch) | |
| tree | b22648fd463030776e8d283bc1d8ab842dbea357 /tools/perf/util/hwmon_pmu.c | |
| parent | 870748fa1fac5a397c26126bc32662e9249762c7 (diff) | |
| download | linux-stable-62878b400f5b02416368eda361277c045c675466.tar.gz linux-stable-62878b400f5b02416368eda361277c045c675466.tar.bz2 linux-stable-62878b400f5b02416368eda361277c045c675466.zip | |
perf hwmon_pmu: Ensure hwmon key union is zeroed before use
Non-zero values led to mismatches in testing. This was reproducible
with -fsanitize=undefined.
Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Closes: https://lore.kernel.org/lkml/Zzdtj0PEWEX3ATwL@x1/
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20241119230033.115369-1-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools/perf/util/hwmon_pmu.c')
| -rw-r--r-- | tools/perf/util/hwmon_pmu.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/tools/perf/util/hwmon_pmu.c b/tools/perf/util/hwmon_pmu.c index ac2245acdc6d..4d9d6f405434 100644 --- a/tools/perf/util/hwmon_pmu.c +++ b/tools/perf/util/hwmon_pmu.c @@ -274,7 +274,7 @@ static int hwmon_pmu__read_events(struct hwmon_pmu *pmu) int number; enum hwmon_item item; bool alarm; - union hwmon_pmu_event_key key = {}; + union hwmon_pmu_event_key key = { .type_and_num = 0 }; struct hwmon_pmu_event_value *value; if (ent->d_type != DT_REG) @@ -560,7 +560,7 @@ bool hwmon_pmu__have_event(struct perf_pmu *pmu, const char *name) struct hwmon_pmu *hwm = container_of(pmu, struct hwmon_pmu, pmu); enum hwmon_type type; int number; - union hwmon_pmu_event_key key = {}; + union hwmon_pmu_event_key key = { .type_and_num = 0 }; struct hashmap_entry *cur; size_t bkt; @@ -623,10 +623,11 @@ static int hwmon_pmu__config_term(const struct hwmon_pmu *hwm, return -EINVAL; } else { union hwmon_pmu_event_key key = { - .type = type, - .num = number, + .type_and_num = 0, }; + key.type = type; + key.num = number; attr->config = key.type_and_num; } return 0; |