boot kernel panic with QCA6174 and kernel 4.8

Alexandre Maloteaux alexandre at maloteaux.net
Wed Dec 7 00:40:29 PST 2016


Hi
Since recent kernel upgrade on Arch linux ;  im facing  boot kernel
panics with the ath10k_pci and QCA6174 802.11ac Wireless Network Adapter
on an Eurocom P5 Pro laptop.

This is the main call stack dump :

ath10k_print_driver_info(ath10k_core)
ath10k_pcl_fw_crashed_dump (ath10k_pci)
ath10k_pcl.tasklet

So far i can circumvent the kernel panic by appending
modprobe.blacklist=ath10k_pci  to the kernel command line.
Once the Os is booted i can load the module with modprobe without
triggering the kernel panic.

I also unpacked the initrd and the firmware file are not located in
lib/firmware.

I could not setup kdump so early in the boot process so i have attached
a screenshot of the on screen dump.

lspci :
06:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless
Network Adapter (rev 20)

uname -r
4.8.11-1-ARCH

Best Regards
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