Regression: __dma_free_remap: trying to free invalid coherent area

[Pontus Fuchs]

On 2013-05-23 15:02, Kalle Valo wrote:
> Kalle Valo <kvalo at qca.qualcomm.com> writes:
>
>> updated to latest master (commit d10481e4f) and now I see this everytime
>> when removing wcn36xx.ko:
>>
>> <6>[   54.962765] wlan0: RX AssocResp from 00:03:7f:40:82:dd (capab=0x401 status=0 aid=1)
>> <6>[   54.983030] wlan0: associated
>> <6>[   54.985045] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
>> <6>[   59.599236] wlan0: deauthenticating from 00:03:7f:40:82:dd by local choice (reason=3)
>> <6>[   59.627498] wcn36xx: wcn36xx_config channel switch=1
>> <6>[   59.628292] wcn36xx: channel switched to: 1, status: 0
>> <6>[   59.628719] cfg80211: Calling CRDA to update world regulatory domain
>> <3>[   59.661590] __dma_free_remap: trying to free invalid coherent area: ffde400c
>> <4>[   59.661864] [<c00143a0>] (unwind_backtrace+0x0/0x11c) from [<c001767c>] (dma_free_coherent+0x88/0x1a8)
>> <4>[   59.662414] [<c001767c>] (dma_free_coherent+0x88/0x1a8) from [<bf133264>] (wcn36xx_dxe_free_mem_pools+0x2c/0x60 [wcn36xx])
>> <4>[   59.662871] [<bf133264>] (wcn36xx_dxe_free_mem_pools+0x2c/0x60 [wcn36xx]) from [<bf1324d4>] (wcn36xx_stop+0x54/0x7c [wcn36xx])
>
> Reverting the commit below fixes the issue for me. Pontus, do you have
> any ideas?
>

Does not happen here. Does it happen if you just insmod,  ifconfig up, 
rmmod?

//Pontus