On Tue, Sep 27, 2022 at 08:03:18PM +0100, broonie@xxxxxxxxxx wrote:
> Hi all,
>
> Today's linux-next merge of the kspp tree got a conflict in:
>
> include/asm-generic/vmlinux.lds.h
>
> between commit:
>
> 13b0566962914 ("vmlinux.lds.h: CFI: Reduce alignment of jump-table to function alignment")
>
> from the arm64-fixes tree and commit:
>
> 89245600941e4 ("cfi: Switch to -fsanitize=kcfi")
>
> from the kspp tree.
>
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging. You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
>
> diff --cc include/asm-generic/vmlinux.lds.h
> index ae63dd8a3a2cf,7501edfce11ea..0000000000000
> --- a/include/asm-generic/vmlinux.lds.h
> +++ b/include/asm-generic/vmlinux.lds.h
>
> [The block updated in Will's commit is just plain removed with no
> equivalent in kspp]
Right, this is correct. 13b0566962914 (a fix for the previous CFI
implementation) becomes useful for -stable backports, but is entirely
removed for the new CFI implementation.
--
Kees Cook
