Resolved! some weird error on show log buffer
I occasionally `show log buffer` and saw some error:2021-07-23 11:20:38 info kernel: [wifi]: wl1: wlc_txbf_init_exp failed to set shm idx2021-07-23 11:20:38 info kernel: [wifi]: 1 wlc_txbf_set_shm_idx: fail to find a free user index2021-07-23 1...