Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 3/7] perf bpf: Return NULL when RB tree lookup fails in perf_env__find_bpf_prog_info() | Date | Fri, 19 Apr 2019 09:30:25 -0300 |
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From: Jiri Olsa <jolsa@kernel.org>
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> --- 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; } -- 2.20.1
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