ath10k kernel panic on boot

[Nick Marriott]

You’re right, 4.13 seems to have fixed the crash!

Thanks a lot Ben!


> On Sep 1, 2017, at 13:26, Ben Greear <greearb at candelatech.com> wrote:
> 
> 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
>