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 <robdcl...@gmail.com> Cc: Abhinav Kumar <quic_abhin...@quicinc.com> Cc: Dmitry Baryshkov <dmitry.barysh...@linaro.org> Cc: Sean Paul <s...@poorly.run> Cc: Marijn Suijten <marijn.suij...@somainline.org> Cc: David Airlie <airl...@gmail.com> Cc: Daniel Vetter <dan...@ffwll.ch> Cc: Bjorn Andersson <anders...@kernel.org> Cc: linux-arm-...@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: freedr...@lists.freedesktop.org Signed-off-by: Kees Cook <keesc...@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
