[FS#4054] ath10k kernel error out of the blue on WiFi dump AP running with 802.11s mesh backhaul

[OpenWrt Bugs]

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FS#4054 - ath10k kernel error out of the blue on WiFi dump AP running with 802.11s mesh backhaul
User who did this - benpicco (benpicco)

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I see the same issue on Archer C5v1 with OpenWrt 21.02.1

```
[726210.713445] ------------[ cut here ]------------
[726210.718292] WARNING: CPU: 0 PID: 0 at backports-5.10.68-1/net/mac80211/rate.c:677 0x8771e700 [mac80211 at a2a1a7d4+0x7cdb0]
[726210.729427] 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 pppox ppp_generic nf_nat nf_flow_table_hw nf_flow_table nf_conntrack mac80211 ipt_REJECT cfg80211 xt_time xt_tcpudp xt_multiport xt_mark xt_mac xt_limit xt_comment xt_TCPMSS xt_LOG slhc nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_filter ip_tables hwmon crc_ccitt compat ledtrig_usbport nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 fsl_mph_dr_of ehci_platform ehci_fsl ehci_hcd gpio_button_hotplug usbcore nls_base usb_common
[726210.792587] CPU: 0 PID: 0 Comm: swapper Not tainted 5.4.154 #0
[726210.798591] Stack : 87780000 800b98ec 80660000 805fa498 00000000 00000000 00000000 00000000
[726210.807160]         00000000 00000000 00000000 00000000 00000000 00000001 87c0bc30 897cbe95
[726210.815731]         87c0bcc8 00000000 00000000 0000012a 00000038 8057ac04 352e342e 31353420
[726210.824302]         0000012a be6adfcc 00000000 73776170 00000000 87c0bc10 00000000 8771e700
[726210.832872]         00000009 87776760 870581a0 80630000 00000002 8032041c 00000000 80790000
[726210.841444]         ...
[726210.844014] Call Trace:
[726210.844028] [] 0x87780000 [ath10k_core at e42640e8+0x6bb00]
[726210.852957] [] 0x800b98ec
[726210.856584] [] 0x80660000
[726210.860211] [] 0x8057ac04
[726210.863849] [] 0x8771e700 [mac80211 at a2a1a7d4+0x7cdb0]
[726210.869957] [] 0x8032041c
[726210.873592] [] 0x87780000 [ath10k_core at e42640e8+0x6bb00]
[726210.879948] [] 0x80069364
[726210.883572] [] 0x8006936c
[726210.887199] [] 0x800824f4
[726210.890831] [] 0x8771e700 [mac80211 at a2a1a7d4+0x7cdb0]
[726210.896923] [] 0x8008259c
[726210.900560] [] 0x8771e700 [mac80211 at a2a1a7d4+0x7cdb0]
[726210.906668] [] 0x8772e728 [mac80211 at a2a1a7d4+0x7cdb0]
[726210.912769] [] 0x800c3f10
[726210.916407] [] 0x8706991c [ath9k at 625c8d39+0x19450]
[726210.922258] [] 0x8706cc84 [ath9k at 625c8d39+0x19450]
[726210.928102] [] 0x87064664 [ath9k at 625c8d39+0x19450]
[726210.933947] [] 0x87730d9c [mac80211 at a2a1a7d4+0x7cdb0]
[726210.940059] [] 0x87730ef0 [mac80211 at a2a1a7d4+0x7cdb0]
[726210.946169] [] 0x87738bf0 [mac80211 at a2a1a7d4+0x7cdb0]
[726210.952287] [] 0x8773a838 [mac80211 at a2a1a7d4+0x7cdb0]
[726210.958398] [] 0x87064eb8 [ath9k at 625c8d39+0x19450]
[726210.964227] [] 0x80660000
[726210.967858] [] 0x80660000
[726210.971486] [] 0x80085380
[726210.975111] [] 0x800ba7e4
[726210.978737] [] 0x80580170
[726210.982377] [] 0x800bf374
[726210.986008] [] 0x802bfc1c
[726210.989640] [] 0x80064f78
[726210.993257] 
[726210.994857] ---[ end trace 2715ec3721563753 ]---
```

This is just running in AP mode with a few clients connected, nothing unusual.
I just noticed this when checking dmesg.
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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=4054#comment10477

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