I am using a TP-Link C7 v4 as an Access Point.
Running:
DISTRIB_ID='OpenWrt'
DISTRIB_RELEASE='23.05.5'
DISTRIB_REVISION='r24106-10cc5fcd00'
DISTRIB_TARGET='ath79/generic'
DISTRIB_ARCH='mips_24kc'
DISTRIB_DESCRIPTION='OpenWrt 23.05.5 r24106-10cc5fcd00'
DISTRIB_TAINTS=''
Uptime was about 4 days when I faced this issue. I noticed that the 5GHz AP "disappeared" but not the 2.4 GHz AP.
Here's what I see in the kernel log:
[401995.553122] ------------[ cut here ]------------
[401995.558118] WARNING: CPU: 0 PID: 9567 at backports-6.1.110-1/net/wireless/chan.c:475 0x81bb57d0 [cfg80211@46e704c3+0x45620]
[401995.569915] Modules linked in: ath10k_pci ath9k ath9k_common pppoe ppp_async nft_fib_inet nf_flow_table_ipv6 nf_flow_table_ipv4 nf_flow_table_inet ath9k_hw ath10k_core ath pppox ppp_generic nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_objref nft_numgen nft_nat nft_masq nft_log nft_limit nft_hash nft_flow_offload nft_fib_ipv6 nft_fib_ipv4 nft_fib nft_ct nft_counter nft_chain_nat nf_tables nf_nat nf_flow_table nf_conntrack mac80211 lzo cfg80211 slhc nfnetlink nf_reject_ipv6 nf_reject_ipv4 nf_log_syslog nf_defrag_ipv6 nf_defrag_ipv4 lzo_rle lzo_decompress lzo_compress libcrc32c hwmon crc_ccitt compat ledtrig_usbport sha512_generic seqiv jitterentropy_rng drbg hmac cmac crypto_acompress fsl_mph_dr_of ehci_platform ehci_fsl ehci_hcd gpio_button_hotplug usbcore nls_base usb_common crc32c_generic [last unloaded: ath10k_pci]
[401995.648571] CPU: 0 PID: 9567 Comm: kworker/u2:0 Not tainted 5.15.167 #0
[401995.655511] Workqueue: events_unbound 0x81b80228 [cfg80211@46e704c3+0x45620]
[401995.663212] Stack : 80658d10 80668940 80720000 83333580 00000000 00000000 00000000 00000000
[401995.672024] 00000000 00000000 00000000 00000000 00000000 00000001 80d1dcc0 63fdd347
[401995.680872] 80d1dd58 00000000 00000000 80d1db48 00000038 80331144 00000000 ffffffea
[401995.689732] 000001f0 80d1db54 000001f0 8072a078 80668940 80d1dca0 00000000 81bb57d0
[401995.698531] 00000009 821d0000 80c09005 833335c0 00000000 8039cd80 00000000 808e0000
[401995.707359] ...
[401995.710032] Call Trace:
[401995.710045] [<80331144>] 0x80331144
[401995.716363] [<81bb57d0>] 0x81bb57d0 [cfg80211@46e704c3+0x45620]
[401995.722762] [<8039cd80>] 0x8039cd80
[401995.726471] [<80066544>] 0x80066544
[401995.730190] [<8006654c>] 0x8006654c
[401995.733916] [<80084900>] 0x80084900
[401995.737613] [<81bb57d0>] 0x81bb57d0 [cfg80211@46e704c3+0x45620]
[401995.743851] [<800849e4>] 0x800849e4
[401995.747650] [<81bb57d0>] 0x81bb57d0 [cfg80211@46e704c3+0x45620]
[401995.753955] [<8064f698>] 0x8064f698
[401995.757676] [<8204d8ac>] 0x8204d8ac [mac80211@bfb2abfd+0x8d0c0]
[401995.764139] [<81b802c4>] 0x81b802c4 [cfg80211@46e704c3+0x45620]
[401995.770514] [<8009ab94>] 0x8009ab94
[401995.774245] [<8009cc44>] 0x8009cc44
[401995.777976] [<8009d400>] 0x8009d400
[401995.781772] [<8009d294>] 0x8009d294
[401995.785573] [<8009d294>] 0x8009d294
[401995.789319] [<800a48d0>] 0x800a48d0
[401995.793041] [<800a4790>] 0x800a4790
[401995.796907] [<800a4790>] 0x800a4790
[401995.800657] [<80061e18>] 0x80061e18
[401995.804468]
[401995.806099] ---[ end trace ecd659b65794fa7a ]---
[401995.811017] ------------[ cut here ]------------
[401995.815874] WARNING: CPU: 0 PID: 9567 at backports-6.1.110-1/net/wireless/nl80211.c:3823 0x81b968fc [cfg80211@46e704c3+0x45620]
[401995.827959] Modules linked in: ath10k_pci ath9k ath9k_common pppoe ppp_async nft_fib_inet nf_flow_table_ipv6 nf_flow_table_ipv4 nf_flow_table_inet ath9k_hw ath10k_core ath pppox ppp_generic nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_objref nft_numgen nft_nat nft_masq nft_log nft_limit nft_hash nft_flow_offload nft_fib_ipv6 nft_fib_ipv4 nft_fib nft_ct nft_counter nft_chain_nat nf_tables nf_nat nf_flow_table nf_conntrack mac80211 lzo cfg80211 slhc nfnetlink nf_reject_ipv6 nf_reject_ipv4 nf_log_syslog nf_defrag_ipv6 nf_defrag_ipv4 lzo_rle lzo_decompress lzo_compress libcrc32c hwmon crc_ccitt compat ledtrig_usbport sha512_generic seqiv jitterentropy_rng drbg hmac cmac crypto_acompress fsl_mph_dr_of ehci_platform ehci_fsl ehci_hcd gpio_button_hotplug usbcore nls_base usb_common crc32c_generic [last unloaded: ath10k_pci]
[401995.906779] CPU: 0 PID: 9567 Comm: kworker/u2:0 Tainted: G W 5.15.167 #0
[401995.915215] Workqueue: events_unbound 0x81b80228 [cfg80211@46e704c3+0x45620]
[401995.922741] Stack : 80658d10 80668940 80720000 83333580 00000000 00000000 00000000 00000000
[401995.931535] 00000000 00000000 00000000 00000000 00000000 00000001 80d1dc50 63fdd347
[401995.940299] 80d1dce8 00000000 00000000 80d1dad8 00000038 80331144 00000000 ffffffea
[401995.949059] 00000213 80d1dae4 00000213 8072a078 80668940 80d1dc30 00000000 81b968fc
[401995.957961] 00000009 00000cc0 00000000 81bc0000 00000000 8039cd80 00000000 808e0000
[401995.966742] ...
[401995.969385] Call Trace:
[401995.969396] [<80331144>] 0x80331144
[401995.975810] [<81b968fc>] 0x81b968fc [cfg80211@46e704c3+0x45620]
[401995.982107] [<8039cd80>] 0x8039cd80
[401995.985831] [<80066544>] 0x80066544
[401995.989918] [<8006654c>] 0x8006654c
[401995.993632] [<80084900>] 0x80084900
[401995.997353] [<81b968fc>] 0x81b968fc [cfg80211@46e704c3+0x45620]
[401996.003896] [<800849e4>] 0x800849e4
[401996.007695] [<81b968fc>] 0x81b968fc [cfg80211@46e704c3+0x45620]
[401996.014069] [<80310bd8>] 0x80310bd8
[401996.017799] [<81bb4954>] 0x81bb4954 [cfg80211@46e704c3+0x45620]
[401996.024064] [<81bb5810>] 0x81bb5810 [cfg80211@46e704c3+0x45620]
[401996.030397] [<8064f698>] 0x8064f698
[401996.034145] [<8204d8ac>] 0x8204d8ac [mac80211@bfb2abfd+0x8d0c0]
[401996.040435] [<81b802c4>] 0x81b802c4 [cfg80211@46e704c3+0x45620]
[401996.046657] [<8009ab94>] 0x8009ab94
[401996.050373] [<8009cc44>] 0x8009cc44
[401996.054187] [<8009d400>] 0x8009d400
[401996.057925] [<8009d294>] 0x8009d294
[401996.061684] [<8009d294>] 0x8009d294
[401996.065411] [<800a48d0>] 0x800a48d0
[401996.069203] [<800a4790>] 0x800a4790
[401996.073038] [<800a4790>] 0x800a4790
[401996.076745] [<80061e18>] 0x80061e18
[401996.080541]
[401996.082174] ---[ end trace ecd659b65794fa7b ]---
[401996.094156] ------------[ cut here ]------------
[401996.099115] WARNING: CPU: 0 PID: 7441 at backports-6.1.110-1/net/wireless/reg.c:4281 0x81b80364 [cfg80211@46e704c3+0x45620]
[401996.110772] Modules linked in: ath10k_pci ath9k ath9k_common pppoe ppp_async nft_fib_inet nf_flow_table_ipv6 nf_flow_table_ipv4 nf_flow_table_inet ath9k_hw ath10k_core ath pppox ppp_generic nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_objref nft_numgen nft_nat nft_masq nft_log nft_limit nft_hash nft_flow_offload nft_fib_ipv6 nft_fib_ipv4 nft_fib nft_ct nft_counter nft_chain_nat nf_tables nf_nat nf_flow_table nf_conntrack mac80211 lzo cfg80211 slhc nfnetlink nf_reject_ipv6 nf_reject_ipv4 nf_log_syslog nf_defrag_ipv6 nf_defrag_ipv4 lzo_rle lzo_decompress lzo_compress libcrc32c hwmon crc_ccitt compat ledtrig_usbport sha512_generic seqiv jitterentropy_rng drbg hmac cmac crypto_acompress fsl_mph_dr_of ehci_platform ehci_fsl ehci_hcd gpio_button_hotplug usbcore nls_base usb_common crc32c_generic [last unloaded: ath10k_pci]
[401996.189763] CPU: 0 PID: 7441 Comm: kworker/u2:2 Tainted: G W 5.15.167 #0
[401996.198226] Workqueue: cfg80211 0x81b8033c [cfg80211@46e704c3+0x45620]
[401996.205266] Stack : 80658d10 80668940 80720000 8337c200 00000000 00000000 00000000 00000000
[401996.214266] 00000000 00000000 00000000 00000000 00000000 00000001 80f0dd48 925c177a
[401996.223070] 80f0dde0 00000000 00000000 80f0dbd0 00000038 80331144 00000000 ffffffea
[401996.231917] 00000239 80f0dbdc 00000239 8072a078 80668940 80f0dd28 00000000 81b80364
[401996.240711] 00000009 8197665c 80cd9d05 8337c240 00000000 8039cd80 00000000 808e0000
[401996.249475] ...
[401996.252102] Call Trace:
[401996.252145] [<80331144>] 0x80331144
[401996.258713] [<81b80364>] 0x81b80364 [cfg80211@46e704c3+0x45620]
[401996.264982] [<8039cd80>] 0x8039cd80
[401996.268837] [<80066544>] 0x80066544
[401996.272601] [<8006654c>] 0x8006654c
[401996.276348] [<80084900>] 0x80084900
[401996.280230] [<81b80364>] 0x81b80364 [cfg80211@46e704c3+0x45620]
[401996.286604] [<800849e4>] 0x800849e4
[401996.290364] [<81b80364>] 0x81b80364 [cfg80211@46e704c3+0x45620]
[401996.296642] [<8009cc44>] 0x8009cc44
[401996.300409] [<8009d400>] 0x8009d400
[401996.304125] [<8009d294>] 0x8009d294
[401996.307847] [<8009d294>] 0x8009d294
[401996.311551] [<800a48d0>] 0x800a48d0
[401996.315412] [<800a4790>] 0x800a4790
[401996.319175] [<800a4790>] 0x800a4790
[401996.322880] [<80061e18>] 0x80061e18
[401996.326586]
[401996.328230] ---[ end trace ecd659b65794fa7c ]---
[401996.464414] br-lan: port 2(phy2-ap0) entered disabled state
[401996.471776] device phy2-ap0 left promiscuous mode
[401996.476906] br-lan: port 2(phy2-ap0) entered disabled state
[401997.464663] ath10k_pci 0000:00:00.0: 10.1 wmi init: vdevs: 16 peers: 127 tid: 256
[401997.482237] ath10k_pci 0000:00:00.0: wmi print 'P 128 V 8 T 410'
[401997.488826] ath10k_pci 0000:00:00.0: wmi print 'msdu-desc: 1424 sw-crypt: 0 ct-sta: 0'
[401997.497196] ath10k_pci 0000:00:00.0: wmi print 'alloc rem: 24984 iram: 38672'
[401997.566231] ath10k_pci 0000:00:00.0: pdev param 0 not supported by firmware
[401997.581391] ath10k_pci 0000:00:00.0: rts threshold -1
[401997.589782] br-lan: port 2(phy2-ap0) entered blocking state
[401997.595756] br-lan: port 2(phy2-ap0) entered disabled state
[401997.601975] device phy2-ap0 entered promiscuous mode
Happy to share more logging and/or configuration settings if helpful.
Thanks,
John