Problems after scanning wifi channel, log filled with errors, crashes, radio is down

OK, for all you TL;DR people....

Anyone know what this means? and why it happened?

Best place to post bug report, if nobody has info?

I think you TL;DRed too much, to the point where you forgot to include any relevant information needed to assist you.

:man_shrugging:

(I did read some of your edits; but since you removed them, they're off-topic. Don't upgrade packages in the firmware; and yes...I got the Marvin the Martian reference to the "Earth-shattering kaboom" - someone imitated him today! :grinning_face_with_smiling_eyes: Also, I didn't understand how the x86_64 PC was involved.)

1 Like

???!!!

I have no idea what I did, to erase my original post, when I tacked on the TL;DR post!

Will have to see about bringing it back, if possible, when I'm on the desktop again.

And edit it for brevity, along with more info, I guess...

So, the basic question, does doing a wifi scan on a C7 with active radios and connected wifi clients work on 19.07.7, or does it blow up?

TP-Link Archer C7, V3
19.07.7
Stock ath10k-ct driver/interface that comes with 19.0.7.7
Stock otherwise for a update of hostapd, and wpad-mini. Was feeling lucky....
Sysem set up is: the C7 is a dumb AP serving Wifi to the house, with a separate OpenWRT miniPC x86 box as the router, then a Cable Modem.

I scanned my local 5Ghz ac neighborhood, with the Scan button in Wireless, under Luci. This caused the 5ghz radio to go offline, and looking at the logs showed the many errors and kernal warns and crashes

This was after both radios have been enabled and were up and running with stations attached. So, first question would be, is it expected for a running radio to be able to successfully scan and report?

Section of the syslog below:

Mon Mar 15 15:54:20 2021 kern.warn kernel: [ 1435.590737] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:20 2021 kern.warn kernel: [ 1435.596838] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:20 2021 kern.warn kernel: [ 1436.038888] ath10k_pci 0000:00:00.0: failed to set beacon mode for vdev 0: -70
Mon Mar 15 15:54:20 2021 kern.warn kernel: [ 1436.046308] ath10k_pci 0000:00:00.0: failed to set dtim period for vdev 0: -70
Mon Mar 15 15:54:20 2021 kern.warn kernel: [ 1436.054348] ath10k_pci 0000:00:00.0: failed to recalculate rts/cts prot for vdev 0: -70
Mon Mar 15 15:54:20 2021 kern.warn kernel: [ 1436.062720] ath10k_pci 0000:00:00.0: failed to set preamble for vdev 0: -70
Mon Mar 15 15:54:20 2021 kern.warn kernel: [ 1436.069937] ath10k_pci 0000:00:00.0: failed to set mgmt tx rate -70
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1436.577884] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1436.584023] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1436.590100] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1436.596201] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1436.602279] net_ratelimit: 12 callbacks suppressed
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1436.602290] ath10k_pci 0000:00:00.0: failed to transmit packet, dropping: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1436.614421] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1436.620525] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1437.243600] ath10k_pci 0000:00:00.0: failed to transmit packet, dropping: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1437.250880] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1437.256979] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1437.383386] ath10k_pci 0000:00:00.0: failed to transmit packet, dropping: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1437.390672] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:21 2021 kern.warn kernel: [ 1437.396763] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1437.480232] ath10k_pci 0000:00:00.0: failed to transmit packet, dropping: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1437.487486] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1437.493619] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1437.575588] ath10k_pci 0000:00:00.0: failed to transmit packet, dropping: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1437.582870] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1437.588984] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1437.595055] ath10k_pci 0000:00:00.0: failed to transmit packet, dropping: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1437.602337] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1437.608428] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1438.105252] ath10k_pci 0000:00:00.0: failed to transmit packet, dropping: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1438.112532] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1438.118646] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1438.383076] ath10k_pci 0000:00:00.0: failed to transmit packet, dropping: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1438.390358] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:22 2021 kern.warn kernel: [ 1438.396451] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:23 2021 kern.warn kernel: [ 1438.580891] ath10k_pci 0000:00:00.0: failed to transmit packet, dropping: -19
Mon Mar 15 15:54:23 2021 kern.warn kernel: [ 1438.588138] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:23 2021 kern.warn kernel: [ 1438.594277] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:23 2021 kern.warn kernel: [ 1438.600364] ath10k_pci 0000:00:00.0: failed to transmit packet, dropping: -19
Mon Mar 15 15:54:23 2021 kern.warn kernel: [ 1438.607611] ath10k_pci 0000:00:00.0: failed to submit frame: -19
Mon Mar 15 15:54:23 2021 kern.warn kernel: [ 1438.613745] ath10k_pci 0000:00:00.0: failed to push frame: -19
Mon Mar 15 15:54:23 2021 daemon.notice hostapd: wlan0: interface state ENABLED->DISABLED
Mon Mar 15 15:54:23 2021 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED                   :b2:2a
Mon Mar 15 15:54:23 2021 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED                   :75:12
Mon Mar 15 15:54:23 2021 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED                   :b2:2b
Mon Mar 15 15:54:23 2021 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED                   :35:2a
Mon Mar 15 15:54:23 2021 kern.warn kernel: [ 1439.400302] ath10k_pci 0000:00:00.0: failed to set beacon mode for vdev 0: -70
Mon Mar 15 15:54:23 2021 kern.warn kernel: [ 1439.407770] ath10k_pci 0000:00:00.0: failed to set dtim period for vdev 0: -70
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.428711] ath10k_pci 0000:00:00.0: failed to recalculate rts/cts prot for vdev 0: -70
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.437049] ath10k_pci 0000:00:00.0: failed to set preamble for vdev 0: -70
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.444284] ath10k_pci 0000:00:00.0: failed to set mgmt tx rate -70
Mon Mar 15 15:54:24 2021 daemon.notice hostapd: wlan0: AP-DISABLED
Mon Mar 15 15:54:24 2021 daemon.notice hostapd: wlan0: CTRL-EVENT-TERMINATING
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.468803] ath10k_pci 0000:00:00.0: failed to transmit management frame via WMI: -70
Mon Mar 15 15:54:24 2021 daemon.notice hostapd: nl80211: deinit ifname=wlan0 disabled_11b_rates=0
Mon Mar 15 15:54:24 2021 kern.info kernel: [ 1439.478814] device wlan0 left promiscuous mode
Mon Mar 15 15:54:24 2021 kern.info kernel: [ 1439.483547] br-lan: port 2(wlan0) entered disabled state
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.498896] ath10k_pci 0000:00:00.0: failed to clear all peer wep keys for vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.506976] ath10k_pci 0000:00:00.0: failed to disassociate station: :35:2a vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.516063] ath10k_pci 0000:00:00.0: failed to delete peer :35:2a for vdev 0: -70
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.558817] ath10k_pci 0000:00:00.0: failed to clear all peer wep keys for vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.566877] ath10k_pci 0000:00:00.0: failed to disassociate station: :35:2a vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.592243] ath10k_pci 0000:00:00.0: failed to clear all peer wep keys for vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.600355] ath10k_pci 0000:00:00.0: failed to disassociate station: :75:12 vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.609500] ath10k_pci 0000:00:00.0: failed to delete peer :75:12 for vdev 0: -70
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.655932] ath10k_pci 0000:00:00.0: failed to clear all peer wep keys for vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.664061] ath10k_pci 0000:00:00.0: failed to disassociate station: 4c:ef:c0:db:75:12 vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.674704] ath10k_pci 0000:00:00.0: failed to clear all peer wep keys for vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.682856] ath10k_pci 0000:00:00.0: failed to disassociate station: :b2:2a vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.692036] ath10k_pci 0000:00:00.0: failed to delete peer :b2:2a for vdev 0: -70
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.701554] ath10k_pci 0000:00:00.0: failed to clear all peer wep keys for vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.709734] ath10k_pci 0000:00:00.0: failed to disassociate station: :b2:2a vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.719332] ath10k_pci 0000:00:00.0: failed to clear all peer wep keys for vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.727410] ath10k_pci 0000:00:00.0: failed to disassociate station: :b2:2b vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.736654] ath10k_pci 0000:00:00.0: failed to delete peer :b2:2b for vdev 0: -70
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.746164] ath10k_pci 0000:00:00.0: failed to clear all peer wep keys for vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.754189] ath10k_pci 0000:00:00.0: failed to disassociate station: :b2:2b vdev 0: -2
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.763235] ath10k_pci 0000:00:00.0: failed to down vdev_id 0: -70
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.769709] ------------[ cut here ]------------
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.774709] WARNING: CPU: 0 PID: 1601 at /builder/shared-workdir/build/build_dir/target-mips_24kc_musl/linux-ath79_generic/ath10k-ct-regular/ath10k-ct-2019-09-09-5e8cd86f/ath10k-4.19/mac.c:8930 0x8770482c [ath10k_core@87700000+0x5d310]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.796038] Modules linked in: ath9k ath9k_common pppoe ppp_async ath9k_hw 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 ehci_platform ehci_hcd gpio_button_hotplug usbcore nls_base usb_common
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.866854] CPU: 0 PID: 1601 Comm: hostapd Tainted: G        W       4.14.221 #0
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.874634] Stack : 0000001c 800b2d94 80500000 804b2a28 00000000 00000000 00000000 00000000
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.883285]         00000000 00000000 00000000 00000000 00000000 00000001 86b559f0 05d01c51
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.891842]         86b55a88 00000000 00000000 0000abb8 00000038 8044a6f8 00000008 00000000
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.900459]         00000f84 4fcd206a 00000f83 00000000 86b559d0 80000000 00000000 8774e4a0
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.909286]         8770482c 000022e2 86367a00 00000000 00000003 80281624 00000000 80630000
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.917781]         ...
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.920336] Call Trace:
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.920349] [<800b2d94>] 0x800b2d94
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.926547] [<8044a6f8>] 0x8044a6f8
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.930163] [<8770482c>] 0x8770482c [ath10k_core@87700000+0x5d310]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.936554] [<80281624>] 0x80281624
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.940212] [<8006a56c>] 0x8006a56c
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.943752] [<8006a574>] 0x8006a574
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.947290] [<80084d80>] 0x80084d80
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.951003] [<8770482c>] 0x8770482c [ath10k_core@87700000+0x5d310]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.957291] [<80084e68>] 0x80084e68
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.961100] [<8770482c>] 0x8770482c [ath10k_core@87700000+0x5d310]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.967561] [<876bdebc>] 0x876bdebc [mac80211@87680000+0x6c6c0]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.973729] [<800880e0>] 0x800880e0
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.977376] [<876bee9c>] 0x876bee9c [mac80211@87680000+0x6c6c0]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.983643] [<876bf854>] 0x876bf854 [mac80211@87680000+0x6c6c0]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.989863] [<876a0e80>] 0x876a0e80 [mac80211@87680000+0x6c6c0]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.996054] [<8022d580>] 0x8022d580
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1439.999727] [<875ee3c8>] 0x875ee3c8 [cfg80211@875c0000+0x36730]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.005817] [<875ee4b8>] 0x875ee4b8 [cfg80211@875c0000+0x36730]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.012043] [<8035272c>] 0x8035272c
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.015645] [<800aca1c>] 0x800aca1c
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.019253] [<80352440>] 0x80352440
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.022966] [<80350f88>] 0x80350f88
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.026725] [<8043c760>] 0x8043c760
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.030410] [<803516a4>] 0x803516a4
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.033968] [<8034ee28>] 0x8034ee28
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.037517] [<8035064c>] 0x8035064c
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.041200] [<80350b28>] 0x80350b28
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.044826] [<802f9e50>] 0x802f9e50
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.048394] [<8035074c>] 0x8035074c
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.052039] [<802fa0b0>] 0x802fa0b0
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.055609] [<800a0f6c>] 0x800a0f6c
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.059215] [<80183144>] 0x80183144
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.062771] [<8015c2ec>] 0x8015c2ec
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.066314] [<8015c160>] 0x8015c160
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.069884] [<802fa938>] 0x802fa938
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.073523] [<802f8938>] 0x802f8938
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.077295] [<8006f7ec>] 0x8006f7ec
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.081146] [<802fa6d8>] 0x802fa6d8
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.084736]
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.086325] ---[ end trace 24371db6c19b35d0 ]---
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.091151] ath10k_pci 0000:00:00.0: failed to stop WMI vdev 0: -70
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.097631] ath10k_pci 0000:00:00.0: failed to stop vdev 0: -70
Mon Mar 15 15:54:24 2021 daemon.notice netifd: Network device 'wlan0' link is down
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.139261] ath10k_pci 0000:00:00.0: failed to submit wmi echo: -70
Mon Mar 15 15:54:24 2021 kern.err kernel: [ 1440.145630] ath10k_pci 0000:00:00.0: failed to ping firmware: -70
Mon Mar 15 15:54:24 2021 kern.warn kernel: [ 1440.151964] ath10k_pci 0000:00:00.0: failed to install key for vdev 0 peer :bd:d2: -70
Mon Mar 15 15:54:24 2021 kern.err kernel: [ 1440.161104] wlan0: failed to remove key (1, ff:ff:ff:ff:ff:ff) from hardware (-70)
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.169335] ------------[ cut here ]------------
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.174073] WARNING: CPU: 0 PID: 1601 at backports-4.19.161-1/net/mac80211/key.c:910 0x876b5bc4 [mac80211@87680000+0x6c6c0]
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.185619] Modules linked in: ath9k ath9k_common pppoe ppp_async ath9k_hw 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 ehci_platform ehci_hcd gpio_button_hotplug usbcore nls_base usb_common
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.256521] CPU: 0 PID: 1601 Comm: hostapd Tainted: G        W       4.14.221 #0
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.264238] Stack : 87122700 800b2d94 80500000 804b2a28 00000000 00000000 00000000 00000000
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.273010]         00000000 00000000 00000000 00000000 00000000 00000001 86b55be0 05d01c51
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.281689]         86b55c78 00000000 00000000 0000bc08 00000038 8044a6f8 00000008 00000000
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.290455]         00000fbd a47c1ffc 00000fbc 00000000 86b55bc0 80000000 00000000 876e7ca4
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.299234]         876b5bc4 0000038e 00000000 00000001 00000003 80281624 00000000 80630000
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.307954]         ...
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.310603] Call Trace:
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.310649] [<800b2d94>] 0x800b2d94
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.316690] [<8044a6f8>] 0x8044a6f8
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.320269] [<876b5bc4>] 0x876b5bc4 [mac80211@87680000+0x6c6c0]
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.326559] [<80281624>] 0x80281624
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.330436] [<8006a56c>] 0x8006a56c
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.334197] [<8006a574>] 0x8006a574
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.337857] [<80084d80>] 0x80084d80
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.341483] [<876b5bc4>] 0x876b5bc4 [mac80211@87680000+0x6c6c0]
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.347688] [<80084e68>] 0x80084e68
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.351411] [<80113cc4>] 0x80113cc4
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.354980] [<876b5bc4>] 0x876b5bc4 [mac80211@87680000+0x6c6c0]
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.361031] [<8032298c>] 0x8032298c
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.364679] [<87698488>] 0x87698488 [mac80211@87680000+0x6c6c0]
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.370738] [<803403b4>] 0x803403b4
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.374280] [<803403b8>] 0x803403b8
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.377993] [<800aca1c>] 0x800aca1c
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.381712] [<876986fc>] 0x876986fc [mac80211@87680000+0x6c6c0]
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.388017] [<80312ae8>] 0x80312ae8
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.391782] [<8031b1d4>] 0x8031b1d4
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.395446] [<8031b5f0>] 0x8031b5f0
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.399038] [<8031b6fc>] 0x8031b6fc
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.402576] [<803388d0>] 0x803388d0
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.406250] [<80398b9c>] 0x80398b9c
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.409983] [<803388d0>] 0x803388d0
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.413611] [<802f973c>] 0x802f973c
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.417201] [<80153e7c>] 0x80153e7c
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.420791] [<802fab44>] 0x802fab44
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.424333] [<802f8938>] 0x802f8938
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.427950] [<80153f68>] 0x80153f68
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.431589] [<8006f7ec>] 0x8006f7ec
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.435200]
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.436720] ---[ end trace 24371db6c19b35d1 ]---
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.441757] ath10k_pci 0000:00:00.0: failed to submit AP/IBSS self-peer removal on vdev 0: -70
Mon Mar 15 15:54:25 2021 kern.warn kernel: [ 1440.450761] ath10k_pci 0000:00:00.0: failed to delete WMI vdev 0: -70
Mon Mar 15 15:54:26 2021 kern.warn kernel: [ 1441.468490] ath10k_pci 0000:00:00.0: failed to remove AP self-peer on vdev 0: -145
Mon Mar 15 15:54:26 2021 kern.warn kernel: [ 1441.476530] ath10k_pci 0000:00:00.0: found vif peer       :bd:d2 id: 462 entry on vdev 0 after it was supposedly removed
Mon Mar 15 15:54:26 2021 kern.warn kernel: [ 1441.488257] ath10k_pci 0000:00:00.0: removing stale peer      :bd:d2 from vdev_id 0
Mon Mar 15 15:54:26 2021 kern.warn kernel: [ 1441.496603] ath10k_pci 0000:00:00.0: removing peer mapping :bd:d2 peer-id: 462
Mon Mar 15 15:54:26 2021 kern.warn kernel: [ 1441.504912] ath10k_pci 0000:00:00.0: removing peer mapping :bd:d2 peer-id: 478
Mon Mar 15 15:54:26 2021 kern.warn kernel: [ 1441.516710] ath10k_pci 0000:00:00.0: could not suspend target (-70)
Mon Mar 15 15:54:27 2021 daemon.err hostapd: Configuration file: /var/run/hostapd-phy0.conf
Mon Mar 15 15:54:28 2021 kern.warn kernel: [ 1443.843731] ath10k_pci 0000:00:00.0: 10.1 wmi init: vdevs: 16  peers: 127  tid: 256
Mon Mar 15 15:54:28 2021 kern.info kernel: [ 1443.860665] ath10k_pci 0000:00:00.0: wmi print 'P 128 V 8 T 410'
Mon Mar 15 15:54:28 2021 kern.info kernel: [ 1443.866987] ath10k_pci 0000:00:00.0: wmi print 'msdu-desc: 1424  sw-crypt: 0 ct-sta: 0'
Mon Mar 15 15:54:28 2021 kern.info kernel: [ 1443.875162] ath10k_pci 0000:00:00.0: wmi print 'alloc rem: 20984 iram: 25656'
Mon Mar 15 15:54:28 2021 kern.warn kernel: [ 1443.938717] ath10k_pci 0000:00:00.0: pdev param 0 not supported by firmware
Mon Mar 15 15:54:28 2021 kern.info kernel: [ 1443.953441] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Mon Mar 15 15:54:28 2021 kern.info kernel: [ 1443.981696] br-lan: port 2(wlan0) entered blocking state
Mon Mar 15 15:54:28 2021 kern.info kernel: [ 1443.987090] br-lan: port 2(wlan0) entered disabled state
Mon Mar 15 15:54:28 2021 kern.info kernel: [ 1443.992927] device wlan0 entered promiscuous mode
Mon Mar 15 15:54:28 2021 daemon.notice hostapd: wlan0: interface state UNINITIALIZED->COUNTRY_UPDATE
Mon Mar 15 15:54:28 2021 daemon.notice hostapd: wlan0: interface state COUNTRY_UPDATE->HT_SCAN
Mon Mar 15 15:54:28 2021 daemon.err hostapd: Using interface wlan0 with hwaddr            :bd:d2 and ssid "network_5g"
Mon Mar 15 15:54:29 2021 kern.info kernel: [ 1444.595544] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Mon Mar 15 15:54:29 2021 kern.info kernel: [ 1444.602403] br-lan: port 2(wlan0) entered blocking state
Mon Mar 15 15:54:29 2021 kern.info kernel: [ 1444.607830] br-lan: port 2(wlan0) entered forwarding state
Mon Mar 15 15:54:29 2021 daemon.notice hostapd: wlan0: interface state HT_SCAN->ENABLED
Mon Mar 15 15:54:29 2021 daemon.notice hostapd: wlan0: AP-ENABLED
Mon Mar 15 15:54:29 2021 daemon.notice netifd: Network device 'wlan0' link is up

Edit: this was my original post, trimmed down for TL DR reasons, and edited with a bit more info.

So, to summarize the question again, has anyone ever used the scan feature for the wifi radios, in luci, on a box running 19.07.7 and had it work? Interrupt the wifi service?

Scanning in general works ok.
(Or the bug tracker would be full of issue reports...)

But I did run into scanning crashes yesterday, when i tested upgrading the firmware on my travelrouter, which has rather similar qca9887 as the 5 GHz chip, and ath10k-ct as the driver. That happened with master. The device scans ok 2.4 GHz.

(And I just tested the scanning on my main router with the newer qca9984 and scanning works ok with ath10k-ct)

Dont tempt me to say "then there must not be 2.4ghz problems on the C7 and recent versions".

I will admit to upgrading hostapd and wpad from stock 19.07.7, when those appeared. I was seeing an issue that might have gotten fixed by that... that if you turn on host isolation for a wifi radio, the turn it off... it reports off but leaves a "1" on the feature in the config file. I need to verify that as well, and havent done so yet. Seems we need that off for a Tivo box to share/play content w another Tivo box in another room.

Same for the original problem here, I made one try after reflashing the FW, and it seemed not to repeat, but havent checked if the isolate control is still funny.

Will finally be back in town tomorrow and can check again after that.