Re: [PATCH v5 00/22] KCFI support

Kees Cook
2022-09-26T17:21:37Z

On Thu, 8 Sep 2022 14:54:42 -0700, Sami Tolvanen wrote:
> KCFI is a forward-edge control-flow integrity scheme in the upcoming
> Clang 16 release, which is more suitable for kernel use than the
> existing CFI scheme used by CONFIG_CFI_CLANG. KCFI doesn't require
> LTO, doesn't alter function references to point to a jump table, and
> won't break function address equality.
>
> This series replaces the current arm64 CFI implementation with KCFI
> and adds support for x86_64.
>
> [...]

I assume that Peter's Ack means I should carry the tree, so, to that end:

Applied to for-next/kcfi, thanks!

[01/22] treewide: Filter out CC_FLAGS_CFI
https://git.kernel.org/kees/c/f143ff397a3f
[02/22] scripts/kallsyms: Ignore __kcfi_typeid_
https://git.kernel.org/kees/c/d0f9562ee43a
[03/22] cfi: Remove CONFIG_CFI_CLANG_SHADOW
https://git.kernel.org/kees/c/9fca7115827b
[04/22] cfi: Drop __CFI_ADDRESSABLE
https://git.kernel.org/kees/c/92efda8eb152
[05/22] cfi: Switch to -fsanitize=kcfi
https://git.kernel.org/kees/c/89245600941e
[06/22] cfi: Add type helper macros
https://git.kernel.org/kees/c/e84e008e7b02
[07/22] lkdtm: Emit an indirect call for CFI tests
https://git.kernel.org/kees/c/cf90d0383560
[08/22] psci: Fix the function type for psci_initcall_t
https://git.kernel.org/kees/c/44f665b69c67
[09/22] arm64: Add types to indirect called assembly functions
https://git.kernel.org/kees/c/c50d32859e70
[10/22] arm64: Add CFI error handling
https://git.kernel.org/kees/c/b26e484b8bb3
[11/22] arm64: Drop unneeded __nocfi attributes
https://git.kernel.org/kees/c/5f20997c194e
[12/22] init: Drop __nocfi from __init
https://git.kernel.org/kees/c/5dbbb3eaa2a7
[13/22] treewide: Drop function_nocfi
https://git.kernel.org/kees/c/607289a7cd7a
[14/22] treewide: Drop WARN_ON_FUNCTION_MISMATCH
https://git.kernel.org/kees/c/4b24356312fb
[15/22] treewide: Drop __cficanonical
https://git.kernel.org/kees/c/5659b598b4dc
[16/22] objtool: Preserve special st_shndx indexes in elf_update_symbol
https://git.kernel.org/kees/c/5141d3a06b2d
[17/22] objtool: Disable CFI warnings
https://git.kernel.org/kees/c/3c68a92d17ad
[18/22] kallsyms: Drop CONFIG_CFI_CLANG workarounds
https://git.kernel.org/kees/c/dfb352ab1162
[19/22] x86/tools/relocs: Ignore __kcfi_typeid_ relocations
https://git.kernel.org/kees/c/ca7e10bff196
[20/22] x86: Add types to indirectly called assembly functions
https://git.kernel.org/kees/c/ccace936eec7
[21/22] x86/purgatory: Disable CFI
https://git.kernel.org/kees/c/a4b7a12c5594
[22/22] x86: Add support for CONFIG_CFI_CLANG
https://git.kernel.org/kees/c/3c516f89e17e

--
Kees Cook