hello,
from time to time the wifi breaks (lan works fine) with the following log:
Sat Apr 9 15:28:41 2022 daemon.notice hostapd: wlan1: AP-STA-DISCONNECTED 60:6d:c7:eb:f3:81
Sat Apr 9 15:28:41 2022 daemon.info hostapd: wlan1: STA 60:6d:c7:eb:f3:81 IEEE 802.11: authenticated
Sat Apr 9 15:28:41 2022 daemon.info hostapd: wlan1: STA 60:6d:c7:eb:f3:81 IEEE 802.11: associated (aid 2)
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.413256] ------------[ cut here ]------------
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.418305] WARNING: CPU: 0 PID: 1494 at backports-5.10.68-1/net/mac80211/rate.c:677 0x8769e700 [mac80211@e397f870+0x7cdb0]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.429992] Modules linked in: ath9k ath9k_common pppoe ppp_async iptable_nat ath9k_hw ath10k_pci ath10k_core ath xt_state xt_nat xt_conntrack xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD xt_CT pptp pppox ppp_mppe ppp_generic nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_amanda nf_nat nf_flow_table_hw nf_flow_table nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_pptp nf_conntrack_irc nf_conntrack_h323 nf_conntrack_broadcast nf_conntrack_amanda nf_conntrack mac80211 ipt_REJECT cfg80211 xt_time xt_tcpudp xt_multiport xt_mark xt_mac xt_limit xt_comment xt_TCPMSS xt_LOG ts_kmp ts_fsm ts_bm slhc nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 iptable_raw iptable_mangle iptable_filter ip_tables hwmon crc_ccitt compat asn1_decoder nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ip_gre gre ip_tunnel sha1_generic ecb arc4 aead cryptomgr crypto_null crypto_hash gpio_button_hotplug
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.520415] CPU: 0 PID: 1494 Comm: hostapd Tainted: G W 5.4.154 #0
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.528323] Stack : 87700000 800b98ec 80660000 805fa498 00000000 00000000 00000000 00000000
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.537142] 00000000 00000000 00000000 00000000 00000000 00000001 86b2b968 a5d6376a
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.545962] 86b2ba00 00000000 00000000 0000143e 00000038 8057ac04 352e342e 31353420
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.554775] 0000143e 1f83402f 00000000 0007f0df 80000000 86b2b948 00000000 8769e700
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.563591] 00000009 876f6760 869201a0 80630000 00000002 8032041c 00000000 80790000
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.572418] ...
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.575124] Call Trace:
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.575156] [<800b98ec>] 0x800b98ec
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.581649] [<80660000>] 0x80660000
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.585443] [<8057ac04>] 0x8057ac04
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.589249] [<8769e700>] 0x8769e700 [mac80211@e397f870+0x7cdb0]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.595558] [<8032041c>] 0x8032041c
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.599361] [<80069364>] 0x80069364
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.603149] [<8006936c>] 0x8006936c
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.606935] [<800824f4>] 0x800824f4
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.610736] [<8769e700>] 0x8769e700 [mac80211@e397f870+0x7cdb0]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.617036] [<8008259c>] 0x8008259c
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.620828] [<8688af48>] 0x8688af48 [ath9k@0d32e7e6+0x19450]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.626870] [<8769e700>] 0x8769e700 [mac80211@e397f870+0x7cdb0]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.633174] [<804505a8>] 0x804505a8
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.636976] [<804505a8>] 0x804505a8
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.640777] [<876b2154>] 0x876b2154 [mac80211@e397f870+0x7cdb0]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.647101] [<8688b908>] 0x8688b908 [ath9k@0d32e7e6+0x19450]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.653167] [<8688ba64>] 0x8688ba64 [ath9k@0d32e7e6+0x19450]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.659211] [<876b2c3c>] 0x876b2c3c [mac80211@e397f870+0x7cdb0]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.665525] [<876b8768>] 0x876b8768 [mac80211@e397f870+0x7cdb0]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.671854] [<876b8bc4>] 0x876b8bc4 [mac80211@e397f870+0x7cdb0]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.678182] [<876ba838>] 0x876ba838 [mac80211@e397f870+0x7cdb0]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.684479] [<803e1450>] 0x803e1450
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.688274] [<86884eb8>] 0x86884eb8 [ath9k@0d32e7e6+0x19450]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.694307] [<80660000>] 0x80660000
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.698095] [<80660000>] 0x80660000
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.701884] [<80085380>] 0x80085380
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.705675] [<80580170>] 0x80580170
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.709463] [<80660000>] 0x80660000
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.713257] [<80085558>] 0x80085558
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.717060] [<8008563c>] 0x8008563c
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.720846] [<803ddefc>] 0x803ddefc
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.724641] [<80539324>] 0x80539324
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.728439] [<8053e1fc>] 0x8053e1fc
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.732222] [<800a938c>] 0x800a938c
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.736032] [<8057be18>] 0x8057be18
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.739836] [<8057c050>] 0x8057c050
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.743616] [<8057f8d8>] 0x8057f8d8
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.747418] [<803b91e8>] 0x803b91e8
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.751219] [<8057f970>] 0x8057f970
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.755031] [<800a1008>] 0x800a1008
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.758819] [<800b2278>] 0x800b2278
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.762614] [<80069e88>] 0x80069e88
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.766407] [<801e69d0>] 0x801e69d0
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.770196] [<8006dcac>] 0x8006dcac
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.773988]
Sat Apr 9 15:28:43 2022 kern.warn kernel: [5016444.775711] ---[ end trace 4b634d001922c2e1 ]---
Sat Apr 9 15:28:43 2022 daemon.notice hostapd: wlan1: AP-STA-CONNECTED 60:6d:c7:eb:f3:81
Sat Apr 9 15:28:43 2022 daemon.info hostapd: wlan1: STA 60:6d:c7:eb:f3:81 WPA: pairwise key handshake completed (RSN)
Sat Apr 9 15:28:43 2022 daemon.info dnsmasq-dhcp[2681]: DHCPREQUEST(br-lan) 192.168.1.231 60:6d:c7:eb:f3:81
Sat Apr 9 15:28:43 2022 daemon.info dnsmasq-dhcp[2681]: DHCPACK(br-lan) 192.168.1.231 60:6d:c7:eb:f3:81 DESKTOP-2N4VBIH
any hints?
TP-Link Archer C6 v2 (EU/RU/JP)
OpenWrt 21.02.1 r16325-88151b8303