linux-kernel - Re: [PATCH 0/9] drm: Annotate structs with __counted

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Date:   Fri, 29 Sep 2023 12:33:24 -0700
From:   Kees Cook <keescook@...omium.org>
To:     David Airlie <airlied@...il.com>, Kees Cook <keescook@...omium.org>
Cc:     Emma Anholt <emma@...olt.net>, Evan Quan <evan.quan@....com>,
        Alex Deucher <alexander.deucher@....com>,
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Subject: Re: [PATCH 0/9] drm: Annotate structs with __counted_by

On Fri, 22 Sep 2023 10:32:05 -0700, Kees Cook wrote:
> This is a batch of patches touching drm for preparing for the coming
> implementation by GCC and Clang of the __counted_by attribute. Flexible
> array members annotated with __counted_by can have their accesses
> bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array
> indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions).
> 
> As found with Coccinelle[1], add __counted_by to structs that would
> benefit from the annotation.
> 
> [...]

Since this got Acks, I figure I should carry it in my tree. Let me know
if this should go via drm instead.

Applied to for-next/hardening, thanks!

[1/9] drm/amd/pm: Annotate struct smu10_voltage_dependency_table with __counted_by
      https://git.kernel.org/kees/c/a6046ac659d6
[2/9] drm/amdgpu/discovery: Annotate struct ip_hw_instance with __counted_by
      https://git.kernel.org/kees/c/4df33089b46f
[3/9] drm/i915/selftests: Annotate struct perf_series with __counted_by
      https://git.kernel.org/kees/c/ffd3f823bdf6
[4/9] drm/msm/dpu: Annotate struct dpu_hw_intr with __counted_by
      https://git.kernel.org/kees/c/2de35a989b76
[5/9] drm/nouveau/pm: Annotate struct nvkm_perfdom with __counted_by
      https://git.kernel.org/kees/c/188aeb08bfaa
[6/9] drm/vc4: Annotate struct vc4_perfmon with __counted_by
      https://git.kernel.org/kees/c/59a54dc896c3
[7/9] drm/virtio: Annotate struct virtio_gpu_object_array with __counted_by
      https://git.kernel.org/kees/c/5cd476de33af
[8/9] drm/vmwgfx: Annotate struct vmw_surface_dirty with __counted_by
      https://git.kernel.org/kees/c/b426f2e5356a
[9/9] drm/v3d: Annotate struct v3d_perfmon with __counted_by
      https://git.kernel.org/kees/c/dc662fa1b0e4

Take care,

-- 
Kees Cook