Messages in this thread Patch in this message | | | From | Kees Cook <> | Subject | [PATCH 4/9] drm/msm/dpu: Annotate struct dpu_hw_intr with __counted_by | Date | Fri, 22 Sep 2023 10:32:09 -0700 |
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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 dpu_hw_intr.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Rob Clark <robdclark@gmail.com> Cc: Abhinav Kumar <quic_abhinavk@quicinc.com> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Cc: Sean Paul <sean@poorly.run> Cc: Marijn Suijten <marijn.suijten@somainline.org> Cc: David Airlie <airlied@gmail.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Bjorn Andersson <andersson@kernel.org> Cc: linux-arm-msm@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org Signed-off-by: Kees Cook <keescook@chromium.org> --- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h index dab761e54863..50cf9523d367 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h @@ -61,7 +61,7 @@ struct dpu_hw_intr { void (*cb)(void *arg, int irq_idx); void *arg; atomic_t count; - } irq_tbl[]; + } irq_tbl[] __counted_by(total_irqs); }; /** -- 2.34.1
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