Re: [PATCH] arm64: process: Fix context switching MTE store-only tag check
Will Deacon <[email protected]>
| Newsgroups | org.infradead.lists.linux-arm-kernel |
|---|---|
| Message-ID | <[email protected]> |
On Wed, 19 Aug 2026 15:48:59 +0100, Vladimir Murzin wrote:
> SCTLR_EL1.TCSO0 is set when user opt-in for MTE store-only tag check
> mode. However, it is not part of SCTLR_USER_MASK which imply that on
> context switch we never clear SCTLR_EL1.TCSO0, so we are leaking that
> setting into another task.
>
> Fix that by including SCTLR_EL1_TCSO0_MASK into SCTLR_USER_MASK
>
> [...]
Applied to arm64 (for-next/core), thanks!
[1/1] arm64: process: Fix context switching MTE store-only tag check
https://git.kernel.org/arm64/c/b8f070ac3167
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev