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-rw-r--r--tools/perf/util/dso.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index ee15db2be2f4..9ed9a5676d35 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -1349,6 +1349,16 @@ void dso__set_build_id(struct dso *dso, struct build_id *bid)
bool dso__build_id_equal(const struct dso *dso, struct build_id *bid)
{
+ if (dso->bid.size > bid->size && dso->bid.size == BUILD_ID_SIZE) {
+ /*
+ * For the backward compatibility, it allows a build-id has
+ * trailing zeros.
+ */
+ return !memcmp(dso->bid.data, bid->data, bid->size) &&
+ !memchr_inv(&dso->bid.data[bid->size], 0,
+ dso->bid.size - bid->size);
+ }
+
return dso->bid.size == bid->size &&
memcmp(dso->bid.data, bid->data, dso->bid.size) == 0;
}