On 06/12/2013 03:21 PM, tip-bot for Kees Cook wrote:
> Commit-ID: c8a22d19dd238ede87aa0ac4f7dbea8da039b9c1
> Gitweb: http://git.kernel.org/tip/c8a22d19dd238ede87aa0ac4f7dbea8da039b9c1
> Author: Kees Cook <[email protected]>
> AuthorDate: Wed, 5 Jun 2013 11:47:18 -0700
> Committer: H. Peter Anvin <[email protected]>
> CommitDate: Wed, 12 Jun 2013 15:16:18 -0700
>
> x86: Fix typo in kexec register clearing
>
> Fixes a typo in register clearing code. Thanks to PaX Team for fixing
> this originally, and James Troup for pointing it out.
>
> Signed-off-by: Kees Cook <[email protected]>
> Link: http://lkml.kernel.org/r/[email protected]
> Cc: <[email protected]> v2.6.30+
> Cc: PaX Team <[email protected]>
> Signed-off-by: H. Peter Anvin <[email protected]>
> ---
> arch/x86/kernel/relocate_kernel_64.S | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/kernel/relocate_kernel_64.S
> b/arch/x86/kernel/relocate_kernel_64.S
> index 7a6f3b3..f2bb9c9 100644
> --- a/arch/x86/kernel/relocate_kernel_64.S
> +++ b/arch/x86/kernel/relocate_kernel_64.S
> @@ -160,7 +160,7 @@ identity_mapped:
> xorq %rbp, %rbp
> xorq %r8, %r8
> xorq %r9, %r9
> - xorq %r10, %r9
> + xorq %r10, %r10
> xorq %r11, %r11
> xorq %r12, %r12
> xorq %r13, %r13
>
As an aside: using xorq here is totally pointless; xorl would work just
fine.
-hpa
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