Re: [PATCH] powerpc/32: Fix hardlockup on vmap stack overflow

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