[PATCH] arm64/sme: Set new vector length before reallocating

Catalin Marinas catalin.marinas at arm.com
Wed Jul 26 11:45:31 PDT 2023


On Wed, 26 Jul 2023 13:12:26 +0100, Mark Brown wrote:
> As part of fixing the allocation of the buffer for SVE state when changing
> SME vector length we introduced an immediate reallocation of the SVE state,
> this is also done when changing the SVE vector length for consistency.
> Unfortunately this reallocation is done prior to writing the new vector
> length to the task struct, meaning the allocation is done with the old
> vector length and can lead to memory corruption due to an undersized buffer
> being used.
> 
> [...]

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

[1/1] arm64/sme: Set new vector length before reallocating
      https://git.kernel.org/arm64/c/05d881b85b48

-- 
Catalin




More information about the linux-arm-kernel mailing list