[PATCH v2] arm64/gcs: Don't call gcs_free() when releasing task_struct

[Will Deacon]

On Mon, 14 Jul 2025 12:21:27 +0100, Mark Brown wrote:
> Currently we call gcs_free() when releasing task_struct but this is
> redundant, it attempts to deallocate any kernel managed userspace GCS
> which should no longer be relevant and resets values in the struct we're
> in the process of freeing.
> 
> By the time arch_release_task_struct() is called the mm will have been
> disassociated from the task so the check for a mm in gcs_free() will
> always be false, for threads that are exiting leaving the mm active
> deactivate_mm() will have been called previously and freed any kernel
> managed GCS.
> 
> [...]

Applied to arm64 (for-next/misc), thanks!

[1/1] arm64/gcs: Don't call gcs_free() when releasing task_struct
      https://git.kernel.org/arm64/c/75fdf823f94b

Cheers,
-- 
Will

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