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This lock is not released if the program return at the patched branch. Signed-off-by: Chengfeng Ye <cyeaa@connect.ust.hk> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210827074140.118671-1-cyeaa@connect.ust.hk