In perf_env__find_btf(), returning without unlocking "env->bpf_progs.lock". There may be cause lockdep issue. DEtected by CoversityScan, CID# 1444762:(program hangs(LOCK)) Fixes: 2db7b1e0bd49d: (perf bpf: Return NULL when RB tree lookup fails in perf_env__find_btf()) Signed-off-by: Bo YU <tsu.yubo@xxxxxxxxx> --- 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; } -- 2.11.0
