[PATCH] perf tools: Fix perf_env__find_bpf_prog_info rb tree lookup

From: Jiri Olsa <jolsa@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Song Liu <songliubraving@fb.com>,
	lkml <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [PATCH] perf tools: Fix perf_env__find_bpf_prog_info rb tree lookup
Date: Tue, 16 Apr 2019 15:41:51 +0200	[thread overview]
Message-ID: <20190416134151.15282-1-jolsa@kernel.org> (raw)

We currently don't return NULL in case we don't find
the bpf_prog_info_node, fixing that.

Cc: Song Liu <songliubraving@fb.com>
Link: http://lkml.kernel.org/n/tip-bp07cla6dy6ifydl1sfoiorw@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/util/env.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
index c6351b557bb0..34a363f2e71b 100644
--- a/tools/perf/util/env.c
+++ b/tools/perf/util/env.c
@@ -57,9 +57,11 @@ struct bpf_prog_info_node *perf_env__find_bpf_prog_info(struct perf_env *env,
 		else if (prog_id > node->info_linear->info.id)
 			n = n->rb_right;
 		else
-			break;
+			goto out;
 	}
+	node = NULL;
 
+out:
 	up_read(&env->bpf_progs.lock);
 	return node;
 }
-- 
2.17.2

