Re: [PATCH] perf: arm_spe: Make wakeup range check overflow safe

[Will Deacon]

On Thu, 02 Jul 2026 18:05:21 +0100, Leo Yan wrote:
> The current code checks whether the wakeup point is in the current
> writable range by comparing it with handle->head + handle->size.
> 
> The perf AUX head is a monotonically increasing index, so that addition
> can overflow when head is close to ULONG_MAX. In that case, a wakeup
> point which is still inside the free space range can be missed.
> 
> [...]

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

[1/1] perf: arm_spe: Make wakeup range check overflow safe
      https://git.kernel.org/arm64/c/fcc5eaea2d23

Cheers,
-- 
Will

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