perf trace: Fix BTF memory leak

captain5050 · namhyung · commit 874fa827df50 · 2025-03-20T22:58:31.000-07:00
Add missing btf__free in trace__exit. Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Arnaldo Carvalho de Melo <acme@kernel.org> Link: https://lore.kernel.org/r/20250319050741.269828-14-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
@@ -5339,6 +5339,10 @@ static void trace__exit(struct trace *trace)
 		zfree(&trace->syscalls.table);
 	}
 	zfree(&trace->perfconfig_events);
+#ifdef HAVE_LIBBPF_SUPPORT
+	btf__free(trace->btf);
+	trace->btf = NULL;
+#endif
 }
 
 #ifdef HAVE_BPF_SKEL

Original file line number	Diff line number	Diff line change
`@@ -5339,6 +5339,10 @@ static void trace__exit(struct trace *trace)`
`5339`	`5339`	`zfree(&trace->syscalls.table);`
`5340`	`5340`	`}`
`5341`	`5341`	`zfree(&trace->perfconfig_events);`
	`5342`	`+#ifdef HAVE_LIBBPF_SUPPORT`
	`5343`	`+ btf__free(trace->btf);`
	`5344`	`+ trace->btf = NULL;`
	`5345`	`+#endif`
`5342`	`5346`	`}`
`5343`	`5347`
`5344`	`5348`	`#ifdef HAVE_BPF_SKEL`