diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 62742e46..78ffde9 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -579,32 +579,34 @@
 static int decompress_kmodule(struct dso *dso, const char *name,
 			      enum dso_binary_type type)
 {
-	int fd;
-	const char *ext = strrchr(name, '.');
+	int fd = -1;
 	char tmpbuf[] = "/tmp/perf-kmod-XXXXXX";
+	struct kmod_path m;
 
 	if (type != DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP &&
 	    type != DSO_BINARY_TYPE__GUEST_KMODULE_COMP &&
 	    type != DSO_BINARY_TYPE__BUILD_ID_CACHE)
 		return -1;
 
-	if (!ext || !is_supported_compression(ext + 1)) {
-		ext = strrchr(dso->name, '.');
-		if (!ext || !is_supported_compression(ext + 1))
-			return -1;
-	}
+	if (type == DSO_BINARY_TYPE__BUILD_ID_CACHE)
+		name = dso->long_name;
+
+	if (kmod_path__parse_ext(&m, name) || !m.comp)
+		return -1;
 
 	fd = mkstemp(tmpbuf);
 	if (fd < 0)
-		return -1;
+		goto out;
 
-	if (!decompress_to_file(ext + 1, name, fd)) {
+	if (!decompress_to_file(m.ext, name, fd)) {
 		close(fd);
 		fd = -1;
 	}
 
 	unlink(tmpbuf);
 
+out:
+	free(m.ext);
 	return fd;
 }