Re: [meta-freescale] linux-fslc 5.4.114: rcu_preempt detected stalls on IMX7D #dunfell #meta-freescale

Fabio Estevam <[email protected]> Tue, 11 Jan 2022 10:06:14 -0300

Newsgroups	org.yoctoproject.lists.meta-freescale
Message-ID	<CAOMZO5A_mD9cVsFLmVtijpt0NtVFMTVrHAaVb7_QJuSTuN45JQ@mail.gmail.com>

Hi Benson,

On Tue, Jan 11, 2022 at 7:08 AM <[email protected]> wrote:
>
> Hello,
>
> We are experiencing kernel crash when we are stress testing WiFi functionality over SDIO interface.
> please see attachment for kernel dump (near end of log)

Looking at your log, I see you use an rtl8822 Wifi device, which is
not supported in the mainline kernel.

I assume you use an out-of-tree driver, right?

When using out-of-tree drivers, it is common to see the driver work on
a specific kernel version and then it breaks on a kernel update.

I suggest you consider using a well-supported Wifi chip instead.

Regards,

Fabio Estevam