Re: [BUG] recursive lock in mwifiex_uninit_sw

[Maximilian Luz]

On 5/14/21 14:45 AM, dave@xxxxxxxxx wrote:
> A firmware crash of the Marvell 88W8897, which are spurious on Microsoft
> Surface devices, will unload/reset the device. However this can also 
> fail
> in more recent kernels, which can cause more problems since the driver
> does not unload. This causes programs trying to reach the network or
> networking devices to hang which in turn causes a reboot/poweroff to 
> hang.
>
> This can happen on the following fedora rawhide kernels:
> - 5.12.0-0.rc8.20210423git7af08140979a.193.fc35.x86_64 [1]
> - 5.13.0-0.rc1.20210512git88b06399c9c7.15.fc35.x86_64 [2]
>
> The latter seems to be more consistent in triggering this behaviour
> (and crashing the firmware). If someone can give me some pointers
> I would gladly help and debug this.

I believe the same issue (with slightly different symptoms) is also
reported in

  https://lore.kernel.org/linux-wireless/98392296-40ee-6300-369c-32e16cff3725@xxxxxxxxx/

See also

  https://lore.kernel.org/linux-wireless/522833b9-08c1-f470-a328-0e7419e86617@xxxxxxxxx/

for more details.

Regards,
Max