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SubjectRe: [PATCH] perf bpf: Fix lock/unlock imbalance in perf_env__find_btf() info
Em Mon, Apr 22, 2019 at 10:10:56AM -0500, Gustavo A. R. Silva escreveu:
> Fix lock/unlock imbalance by moving the call to up_read() just after
> the *out* label.
>
> Addresses-Coverity-ID: 1444762 ("Missing unlock")
> Fixes: 2db7b1e0bd49 ("perf bpf: Return NULL when RB tree lookup fails in perf_env__find_btf()")
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
> ---
> 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;
> }

too late, this was fixed already, also detected by coverity :-)

- Arnaldo

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