[Letux-kernel] gta04a5 rcu_preempt self-detected stall on CPU with latest kernel

[Andreas Kemnade]

Am Sun, 2 Feb 2025 20:55:07 +0100
schrieb "Ing. Josua Mayer" <josua.mayer at jm0.eu>:

> Am 02.02.25 um 20:40 schrieb Andreas Kemnade:
> > Am Sun, 2 Feb 2025 19:35:55 +0100
> > schrieb "Ing. Josua Mayer" <josua.mayer at jm0.eu>:
> >   
> >> Hello everybody,
> >>
> >> I attempted to boot latest letux-kernel (6.12) from microSD today and
> >> encountered rcu stall (see below  [1]).
> >>
> >> microSD created by:
> >> ./makesd -vk letux-6.12.9 gta04one
> >>
> >> also attempted "stable" (5.4) with similar error:
> >> ./makesd -vk stable gta04one
> >>
> >> Has anyone recently tested a specific version on gta04a5 onenand variant?
> >>  
> > we need to revert some i2c driver patch.
> > 
> > This one: c770657bd2611b077ec1e7b1fe6aa92f249399bd or disable the
> > gyroscope driver.  
> 
> Thanks!
> I will look into it.
> 
> In the meantime I have bisected letux-kernel binaries and found the 
> issue introduced with 5.4.243 (attached logs).

yes, it soaked into stable kernels. There is one write to the gyroscope
causing irq storms and therefore all sort of havoc. I want to
understand the real problem to not revert things back. The offending
patch came from TI.

Regards,
Andreas