[FS#3783] MT7621 WiFi driver crash

[OpenWrt Bugs]

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FS#3783 - MT7621 WiFi driver crash 
User who did this - Vincent Riou (VincentR)

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Built the latest today (commit d1a056f62052a251789d0a26c025f319bf497f2f) and got a crash with a simple AP/STA setup - the WiFi stayed up though (which seems different).

Here is the console log (with stack):

[  855.095094] device wlan0-1 left promiscuous mode
[  855.104719] br-lan: port 1(wlan0-1) entered disabled state
[  855.642152] wlan0: deauthenticating from xx:xx:xx:xx:xx:xx by local choice (Reason: 3=DEAUTH_LEAVING)
[  857.952818] br-lan: port 1(wlan0-1) entered blocking state
[  857.964772] br-lan: port 1(wlan0-1) entered disabled state
[  857.977242] device wlan0-1 entered promiscuous mode
[  858.619312] ------------[ cut here ]------------
[  858.628821] WARNING: CPU: 3 PID: 2069 at backports-5.10.34-1/net/mac80211/ieee80211_i.h:1468 sta_info_alloc+0x5c4/0x]
[  858.652422] Modules linked in: xt_connlimit pppoe ppp_async nf_conncount iptable_nat xt_state xt_nat xt_helper xt_cor
[  858.652727]  algif_skcipher algif_rng algif_hash algif_aead af_alg sha256_generic libsha256 sha1_generic jitterentroc
[  858.890371] CPU: 3 PID: 2069 Comm: hostapd Not tainted 5.4.114 #0
[  858.902511] Stack : 8e276094 8007ce5c 80660000 80661d78 806c0000 80661d40 80660e94 8eaefa34
[  858.919176]         80800000 8ff62b08 806aa6e3 805fa924 00000003 00000001 8eaef9d8 a480919e
[  858.935826]         00000000 00000000 80830000 00000000 30232034 00000122 2e352064 31312e34
[  858.952462]         00000000 0000002a 00000000 000d9603 80000000 806c0000 00000000 8e207608
[  858.969091]         00000009 8feae480 00000005 00000002 00000000 8034e07c 0000000c 8080000c
[  858.985722]         ...
[  858.990581] Call Trace:
[  858.995467] [] show_stack+0x30/0x100
[  859.004335] [] dump_stack+0xa4/0xdc
[  859.013017] [] __warn+0xc0/0x10c
[  859.021165] [] warn_slowpath_fmt+0x5c/0xac
[  859.031200] [] sta_info_alloc+0x5c4/0x5fc [mac80211]
[  859.042899] [] ieee80211_nan_func_match+0x3d94/0x441c [mac80211]
[  859.056962] ---[ end trace b8a32ba13a9858c3 ]---
[  865.020490] wlan0: authenticate with xx:xx:xx:xx:xx:xx
[  865.239685] wlan0: send auth to xx:xx:xx:xx:xx:xx (try 1/3)
[  865.252449] wlan0: authenticated
[  865.259933] wlan0: associating with AP with corrupt probe response
[  865.272425] wlan0: associate with xx:xx:xx:xx:xx:xx (try 1/3)
[  865.297509] wlan0: RX AssocResp from xx:xx:xx:xx:xx:xx (capab=0x411 status=0 aid=1)
[  865.313161] wlan0: associated
[  865.568143] br-lan_vpn1: port 1(wlan0-1) entered blocking state
[  865.580011] br-lan_vpn1: port 1(wlan0-1) entered forwarding state


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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3783#comment9624

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