Re: Please apply fixes for PKRU/ptrace interaction to 6 series stable kernels

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On Mon, Jan 09, 2023 at 12:30:50PM -0800, Kyle Huey wrote:
> Hi Greg,
> 
> The following commits fix a regression introduced into the kernel in
> 5.14 (in e84ba47e313d). Please cherry-pick them for both the 6.1.y and
> the 6.0.y branches.
> 
> 6a877d2450ac x86/fpu: Take task_struct* in copy_sigframe_from_user_to_xstate()
> 1c813ce03055 x86/fpu: Add a pkru argument to copy_uabi_from_kernel_to_xstate().
> 2c87767c35ee x86/fpu: Add a pkru argument to copy_uabi_to_xstate()
> 4a804c4f8356 x86/fpu: Allow PKRU to be (once again) written by ptrace.
> d7e5aceace51 x86/fpu: Emulate XRSTOR's behavior if the xfeatures PKRU
> bit is not set
> 6ea25770b043 selftests/vm/pkeys: Add a regression test for setting
> PKRU through ptrace
> 
> 5.15.y requires adjusted patches and will be sent separately.

All now queued up, thanks.

greg k-h



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