ath10k kernel panic on boot

[Ben Greear]

On 09/01/2017 10:22 AM, Nick Marriott wrote:
> I have a QCA9888 Compex WLE650V5-18 that runs just fine on i386 kernels but ath10k seems to be causing a kernel panic on boot with x86_64 kernels.  Log is below.  I've tried multiple firmware versions from kvalo and candelatech but my google-fu couldn’t find a solution.  Any thoughts or suggestions?
>
> [   14.503715] ath10k_pci 0000:04:00.0: pci irq msi oper_irq_mode 2 irq_mode 0 reset_mode 0
> [   14.634112] ath10k_pci 0000:04:00.0: qca9888 hw2.0 target 0x01000000 chip_id 0x00000000 sub 0000:0000
> [   14.643448] ath10k_pci 0000:04:00.0: kconfig debug 0 debugfs 1 tracing 0 dfs 0 testmode 0
> [   14.652937] ath10k_pci 0000:04:00.0: firmware ver 10.4-3.2-00072 api 5 features no-p2p,mfp,peer-flow-ctrl crc32 b1da0716
> [   16.671594] ath10k_pci 0000:04:00.0: board_file api 2 bmi_id 0:17 crc32 74a04250
>
> [   20.133039] swiotlb_tbl_map_single: 9 callbacks suppressed
> [   20.138705] ath10k_pci 0000:04:00.0: swiotlb buffer is full (sz: 461288 bytes)
> [   20.145992] ath10k_pci 0000:04:00.0: DMA: Out of SW-IOMMU space for 461288 bytes
> [   20.153397] Kernel panic - not syncing: DMA: Random memory could be DMA accessed

You need the patch that changes how DMA memory is allocated.  It is in the 4.13 kernel,
and also in the 4.9 kernel linked from the CT firmware page.

http://www.candelatech.com/ath10k-10.1.php

Thanks,
Ben

-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com