On 9/22/23 11:32, Kees Cook wrote:
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-de...@lists.freedesktop.org
Cc: freedr...@lists.freedesktop.org
Signed-off-by: Kees Cook <keesc...@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavo...@kernel.org>
Thanks
--
Gustavo
---
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);
};
/**
_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
