linux-kernel - [PATCH v7 13/14] perf trace: Fix BTF memory leak

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Message-Id: <20250319050741.269828-14-irogers@google.com>
Date: Tue, 18 Mar 2025 22:07:40 -0700
From: Ian Rogers <irogers@...gle.com>
To: Ian Rogers <irogers@...gle.com>, Peter Zijlstra <peterz@...radead.org>, 
	Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Adrian Hunter <adrian.hunter@...el.com>, Kan Liang <kan.liang@...ux.intel.com>, 
	John Garry <john.g.garry@...cle.com>, Will Deacon <will@...nel.org>, 
	James Clark <james.clark@...aro.org>, Mike Leach <mike.leach@...aro.org>, 
	Leo Yan <leo.yan@...ux.dev>, guoren <guoren@...nel.org>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Charlie Jenkins <charlie@...osinc.com>, 
	Bibo Mao <maobibo@...ngson.cn>, Huacai Chen <chenhuacai@...nel.org>, 
	Catalin Marinas <catalin.marinas@....com>, Jiri Slaby <jirislaby@...nel.org>, 
	"Björn Töpel" <bjorn@...osinc.com>, Howard Chu <howardchu95@...il.com>, linux-kernel@...r.kernel.org, 
	linux-perf-users@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	"linux-csky@...r.kernel.org" <linux-csky@...r.kernel.org>, linux-riscv@...ts.infradead.org, 
	Arnd Bergmann <arnd@...db.de>
Subject: [PATCH v7 13/14] perf trace: Fix BTF memory leak

Add missing btf__free in trace__exit.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/builtin-trace.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index a5f31472980b..1d4ad5d19b10 100644
--- 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
-- 
2.49.0.rc1.451.g8f38331e32-goog