Re: [stable 6.12+] x86/pkeys: Simplify PKRU update in signal frame

On Fri, 2025-06-20 at 18:11 +0200, Greg KH wrote:

On Fri, Jun 20, 2025 at 05:56:29PM +0200, Greg KH wrote:

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On Sun, Jun 15, 2025 at 09:25:57PM +0200, Ben Hutchings wrote:

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Hi stable maintainers,

Please apply commit d1e420772cd1 ("x86/pkeys: Simplify PKRU update in signal frame") to the stable branches for 6.12 and later.

This fixes a regression introduced in 6.13 by commit ae6012d72fa6 ("x86/pkeys: Ensure updated PKRU value is XRSTOR'd"), which was also backported in 6.12.5.

Now queued up, thanks.

Nope, this broke the build on 6.12.y and 6.15.y, so now dropped. How did you test this?

Sorry, I forgot to say this depends on the preceding commit 64e54461ab6e ("x86/fpu: Refactor xfeature bitmask update code for sigframe XSAVE").

Ben.