Re: [PATCH] arm64/sme: Always exit sme_alloc() early with existing storage

From: Will Deacon
Date: Thu Jan 18 2024 - 07:03:04 EST


On Mon, 15 Jan 2024 20:15:46 +0000, Mark Brown wrote:
> When sme_alloc() is called with existing storage and we are not flushing we
> will always allocate new storage, both leaking the existing storage and
> corrupting the state. Fix this by separating the checks for flushing and
> for existing storage as we do for SVE.
>
> Callers that reallocate (eg, due to changing the vector length) should
> call sme_free() themselves.
>
> [...]

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

[1/1] arm64/sme: Always exit sme_alloc() early with existing storage
https://git.kernel.org/arm64/c/dc7eb8755797

Cheers,
--
Will

https://fixes.arm64.dev
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