diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:32:14 -0700 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2023-10-05 11:31:33 +0200 |
| commit | 9586e2401700208fac72c5f78bbf15f8fb7007cb (patch) | |
| tree | c899589421b3cbc96b194fe135dc6d5081d4f194 /drivers/gpu/drm/v3d | |
| parent | 45744668746b0bcb36d58a73c2cab603090da9ac (diff) | |
drm/v3d: Annotate struct v3d_perfmon with __counted_by
Prepare 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 for struct v3d_perfmon.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Emma Anholt <emma@anholt.net>
Cc: Melissa Wen <mwen@igalia.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230922173216.3823169-9-keescook@chromium.org
Diffstat (limited to 'drivers/gpu/drm/v3d')
| -rw-r--r-- | drivers/gpu/drm/v3d/v3d_drv.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index 7f664a4b2a75..106454f28956 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.h +++ b/drivers/gpu/drm/v3d/v3d_drv.h @@ -59,7 +59,7 @@ struct v3d_perfmon { * values can't be reset, but you can fake a reset by * destroying the perfmon and creating a new one. */ - u64 values[]; + u64 values[] __counted_by(ncounters); }; struct v3d_dev { |