Petr Štetiar wrote: > It was reported on OpenWrt bug tracking system[1], that several users > are affected by the endless reboot of their routers if they configure > 5GHz interface with channel 44 or 48. > > The reboot loop is caused by the following excessive number of WARN_ON > messages: > > WARNING: CPU: 0 PID: 0 at backports-4.19.23-1/net/mac80211/rx.c:4516 > ieee80211_rx_napi+0x1fc/0xa54 [mac80211] > > as the messages are being correctly emitted by the following guard: > > case RX_ENC_LEGACY: > if (WARN_ON(status->rate_idx >= sband->n_bitrates)) > > as the rate_idx is in this case erroneously set to 251 (0xfb). This fix > simply converts previously used magic number to proper constant and > guards against substraction which is leading to the currently observed > underflow. > > 1. https://bugs.openwrt.org/index.php?do=details&task_id=2218 > > Fixes: 854783444bab ("mwl8k: properly set receive status rate index on 5 GHz receive") > Cc: <stable@xxxxxxxxxxxxxxx> > Tested-by: Eubert Bao <bunnier@xxxxxxxxx> > Reported-by: Eubert Bao <bunnier@xxxxxxxxx> > Signed-off-by: Petr Štetiar <ynezz@xxxxxxx> Patch applied to wireless-drivers-next.git, thanks. 6b583201fa21 mwl8k: Fix rate_idx underflow -- https://patchwork.kernel.org/patch/10896599/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
