[PATCH v1] perf pmu: Avoid segv for missing name/alias_name in wildcarding

[Ian Rogers <irogers@google.com>]

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: c786468a3585 ("perf pmu: Rename name matching for no suffix or wildcard variants")
Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/pmu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 31f1e617eb20..d27bdf421c19 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -2060,7 +2060,9 @@ 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))
-- 
2.49.0.504.g3bcea36a83-goog