I'm running in to a problem in Raspberry Pi 3 B+ running Kali Linux where WiFi controller freezes while in monitor mode, with the following error code under dmesg:
brcmfmac: brcmf_sdio_hostmail: Unknown mailbox data content: 0x40012
There are many people running in to this problem (based on the discussion thread below) but couldn't see any fixes from Cypress team. Can you please help?
wlan freezes in raspberry pi 3B+ · Issue #2453 · raspberrypi/linux · GitHub
Solved! Go to Solution.
Monitor mode in 3B+ mostly crashes because the FW does an OOB read in pktq dequeue function
Could you try changing the debug level and post the dmesg logs.
>> sh -c "echo options brcmfmac debug=0x100000 > /etc/modprobe.d/brcmfmac.conf"
Regard,
Vinayak
Monitor mode in 3B+ mostly crashes because the FW does an OOB read in pktq dequeue function