I rerun the test on a kernel with some more lock checking and got lucky. Feb 8 08:40:17 lb-bun-10 kernel: [ 514.512283] wlan0: authenticate with 98:fc:11:8e:94:57 Feb 8 08:40:17 lb-bun-10 kernel: [ 514.512515] wlan0: send auth to 98:fc:11:8e:94:57 (try 1/3) Feb 8 08:40:17 lb-bun-10 kernel: [ 514.514184] BUG: unable to handle kernel NULL pointer dereference at 00000004
...
Apparently, minstrel_ht expects some tx_status field filled in by brcmsmac/mac80211. Have not found the problem yet.
So the patch you sent fixes this? Just making sure it's not a different thing.
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