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authorJiri Olsa <jolsa@kernel.org>2019-04-16 15:41:51 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-04-17 14:30:06 -0300
commitaa52660231410b13d237299e691c43e346e3a73f (patch)
tree8f76e4fc1483fc921d2661fb56ede8a99721700c /tools
parent30e4c574969ccb624940f1f2f7886596f8fc60ad (diff)
downloadlinux-aa52660231410b13d237299e691c43e346e3a73f.tar.bz2
perf bpf: Return NULL when RB tree lookup fails in perf_env__find_bpf_prog_info()
We currently don't return NULL in case we don't find the bpf_prog_info_node, fixing that. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: e4378f0cb90b ("perf bpf: Save bpf_prog_info in a rbtree in perf_env") Link: http://lkml.kernel.org/r/20190416134151.15282-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/env.c4
1 files changed, 3 insertions, 1 deletions
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;
}