On Thu, 18 Nov 2021 10:39:53 +0100, Christophe Leroy wrote:
> Since the commit c118c7303ad5 ("powerpc/32: Fix vmap stack - Do not
> activate MMU before reading task struct") a vmap stack overflow
> results in a hard lockup. This is because emergency_ctx is still
> addressed with its virtual address allthough data MMU is not active
> anymore at that time.
>
> Fix it by using a physical address instead.
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc/32: Fix hardlockup on vmap stack overflow
https://git.kernel.org/powerpc/c/5bb60ea611db1e04814426ed4bd1c95d1487678e
cheers
