linux-kernel - [PATCH 1/2] perf inject: Call dso_

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Message-Id: <20210524225051.1190486-1-namhyung@kernel.org>
Date:   Mon, 24 May 2021 15:50:50 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>
Subject: [PATCH 1/2] perf inject: Call dso__put() even if dso->hit is set

Otherwise it'll leak the refcount for the DSO.  As dso__put() can
handle a NULL dso pointer, we can just call it unconditionally.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/builtin-inject.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 102cafb0c0b3..8bbaa46eb7e6 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -383,8 +383,8 @@ static int perf_event__repipe_buildid_mmap(struct perf_tool *tool,
 	if (dso && !dso->hit) {
 		dso->hit = 1;
 		dso__inject_build_id(dso, tool, machine, sample->cpumode, 0);
-		dso__put(dso);
 	}
+	dso__put(dso);
 
 	return perf_event__repipe(tool, event, sample, machine);
 }
@@ -447,8 +447,8 @@ static int perf_event__repipe_buildid_mmap2(struct perf_tool *tool,
 		dso->hit = 1;
 		dso__inject_build_id(dso, tool, machine, sample->cpumode,
 				     event->mmap2.flags);
-		dso__put(dso);
 	}
+	dso__put(dso);
 
 	perf_event__repipe(tool, event, sample, machine);
 
-- 
2.31.1.818.g46aad6cb9e-goog