From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>
Cc: linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH] perf bpf: Fix lock/unlock imbalance in perf_env__find_btf() info
Date: Mon, 22 Apr 2019 10:10:56 -0500 [thread overview]
Message-ID: <20190422151056.GA24665@embeddedor> (raw)
Fix lock/unlock imbalance by moving the call to up_read() just after
the *out* label.
Addresses-Coverity-ID: 1444762 ("Missing unlock")
Fixes: 2db7b1e0bd49 ("perf bpf: Return NULL when RB tree lookup fails in perf_env__find_btf()")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
tools/perf/util/env.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
index 9494f9dc61ec..6a3eaf7d9353 100644
--- a/tools/perf/util/env.c
+++ b/tools/perf/util/env.c
@@ -115,8 +115,8 @@ struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id)
}
node = NULL;
- up_read(&env->bpf_progs.lock);
out:
+ up_read(&env->bpf_progs.lock);
return node;
}
--
2.21.0
next reply other threads:[~2019-04-22 15:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-22 15:10 Gustavo A. R. Silva [this message]
2019-04-22 16:05 ` [PATCH] perf bpf: Fix lock/unlock imbalance in perf_env__find_btf() info Arnaldo Carvalho de Melo
2019-04-22 16:07 ` Gustavo A. R. Silva
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