Messages in this thread Patch in this message | | | From | Jiri Olsa <> | Subject | [PATCH] perf bpf: Return NULL when RB tree lookup fails in perf_env__find_btf() | Date | Wed, 17 Apr 2019 16:55:39 +0200 |
| |
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> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Fixes: 3792cb2ff43b ("perf bpf: Save BTF in a rbtree in perf_env") Link: http://lkml.kernel.org/n/tip-99g9rg4p20a1o99vr0nkjhq8@git.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 34a363f2e71b..9494f9dc61ec 100644 --- a/tools/perf/util/env.c +++ b/tools/perf/util/env.c @@ -111,10 +111,12 @@ struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id) else if (btf_id > node->id) n = n->rb_right; else - break; + goto out; } + node = NULL; up_read(&env->bpf_progs.lock); +out: return node; } -- 2.17.2
| |