linux-kernel - Re: [PATCH v2 0/6] riscv: KCFI support

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Date:   Wed, 30 Aug 2023 13:20:34 +0000
From:   patchwork-bot+linux-riscv@...nel.org
To:     Sami Tolvanen <samitolvanen@...gle.com>
Cc:     linux-riscv@...ts.infradead.org, paul.walmsley@...ive.com,
        palmer@...belt.com, aou@...s.berkeley.edu, keescook@...omium.org,
        nathan@...nel.org, ndesaulniers@...gle.com,
        conor.dooley@...rochip.com, llvm@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/6] riscv: KCFI support

Hello:

This series was applied to riscv/linux.git (for-next)
by Palmer Dabbelt <palmer@...osinc.com>:

On Mon, 10 Jul 2023 18:35:45 +0000 you wrote:
> This series adds KCFI support for RISC-V. KCFI is a fine-grained
> forward-edge control-flow integrity scheme supported in Clang >=16,
> which ensures indirect calls in instrumented code can only branch to
> functions whose type matches the function pointer type, thus making
> code reuse attacks more difficult.
> 
> Patch 1 implements a pt_regs based syscall wrapper to address
> function pointer type mismatches in syscall handling. Patches 2 and 3
> annotate indirectly called assembly functions with CFI types. Patch 4
> implements error handling for indirect call checks. Patch 5 disables
> CFI for arch/riscv/purgatory. Patch 6 finally allows CONFIG_CFI_CLANG
> to be enabled for RISC-V.
> 
> [...]

Here is the summary with links:
  - [v2,1/6] riscv: Implement syscall wrappers
    https://git.kernel.org/riscv/c/08d0ce30e0e4
  - [v2,2/6] riscv: Add types to indirectly called assembly functions
    https://git.kernel.org/riscv/c/5f59c6855bad
  - [v2,3/6] riscv: Add ftrace_stub_graph
    https://git.kernel.org/riscv/c/f3a0c23f2539
  - [v2,4/6] riscv: Add CFI error handling
    https://git.kernel.org/riscv/c/af0ead42f693
  - [v2,5/6] riscv/purgatory: Disable CFI
    https://git.kernel.org/riscv/c/a72ab0361110
  - [v2,6/6] riscv: Allow CONFIG_CFI_CLANG to be selected
    https://git.kernel.org/riscv/c/74f8fc31feb4

You are awesome, thank you!
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