On Tue, May 11, 2021 at 3:58 AM kernel test robot <lkp@xxxxxxxxx> wrote: > kernel/bpf/helpers.c:718:23: error: use of undeclared identifier 'bpf_bprintf_buf'; did you mean 'bpf_bprintf_bufs'? Ugh, reminder to self: don't zealously rename variables just before sending a patch out. I'm sending a v2, sorry for the noise.