devnull:

Supply the following if possible:

• Device problem occurs on: ZyXEL NBG6817
• Software versions of OpenWrt/LEDE release, packages, etc.:
  OpenWrt 19.07.2 r10947-65030d81f3 / LuCI openwrt-19.07 branch git-20.115.52331-39a8290
  ath10k-firmware-qca9984-ct - 2019-10-03-d622d160-1
  kmod-ath10k-ct - 4.14.171+2019-09-09-5e8cd86f-1
• Steps to reproduce
  using wifi

[48089.651096] ath10k_pci 0000:01:00.0: Invalid VHT mcs 15 peer stats
[571811.526509] ------------[ cut here ]------------
[571811.526570] WARNING: CPU: 1 PID: 2385 at backports-4.19.98-1/net/wireless/util.c:1147 0xbf25fd88 [cfg80211@bf25b000+0x37000]
[571811.531097] invalid rate bw=4, mcs=15, nss=4
[571811.541600] Modules linked in: pppoe ppp_async ath10k_pci ath10k_core ath pppox ppp_generic nf_conntrack_ipv6 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_FLOWOFFLOAD xt_CT slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack iptable_mangle iptable_filter ip_tables crc_ccitt compat ledtrig_usbport nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 leds_gpio xhci_plat_hcd xhci_pci xhci_hcd dwc3 dwc3_of_simple ohci_platform ohci_hcd phy_qcom_dwc3 ahci ehci_platform
[571811.594357] sd_mod ahci_platform libahci_platform libahci libata scsi_mod ehci_hcd gpio_button_hotplug ext4 mbcache jbd2 crc32c_generic
[571811.616602] CPU: 1 PID: 2385 Comm: hostapd Not tainted 4.14.171 #0
[571811.628899] Hardware name: Generic DT based system
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[571811.752079] ---[ end trace 930655c73d61c5bc ]---