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perf pmu: Avoid segv for missing name/alias_name in wildcarding

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The pmu name or alias_name fields may be NULL and should be skipped if
so. This is done in all loops of perf_pmu___name_match except the
final wildcard loop which was an oversight.

Fixes: 63e287131c ("perf pmu: Rename name matching for no suffix or wildcard variants")
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250527215035.187992-1-irogers@google.com
[ Fixup the Fixes: tag to the right commit ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2025-05-27 14:50:35 -07:00 committed by Arnaldo Carvalho de Melo
parent 4c04654455
commit 2a2a7f5e7d
1 changed files with 3 additions and 0 deletions
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3
tools/perf/util/pmu.c
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@ -2143,6 +2143,9 @@ static bool perf_pmu___name_match(const struct perf_pmu *pmu, const char *to_mat
for (size_t i = 0; i < ARRAY_SIZE(names); i++) {
const char *name = names[i];
if (!name)
continue;
if (wildcard && perf_pmu__match_wildcard_uncore(name, to_match))
return true;
if (!wildcard && perf_pmu__match_ignoring_suffix_uncore(name, to_match))