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 tsens_priv. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Andy Gross <agr...@kernel.org> Cc: Bjorn Andersson <anders...@kernel.org> Cc: Konrad Dybcio <konrad.dyb...@linaro.org> Cc: Amit Kucheria <am...@kernel.org> Cc: Thara Gopinath <thara.gopin...@gmail.com> Cc: "Rafael J. Wysocki" <raf...@kernel.org> Cc: Daniel Lezcano <daniel.lezc...@linaro.org> Cc: Zhang Rui <rui.zh...@intel.com> Cc: linux-arm-...@vger.kernel.org Cc: linux...@vger.kernel.org Signed-off-by: Kees Cook <keesc...@chromium.org> --- drivers/thermal/qcom/tsens.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h index 2805de1c6827..cb637fa289ca 100644 --- a/drivers/thermal/qcom/tsens.h +++ b/drivers/thermal/qcom/tsens.h @@ -585,7 +585,7 @@ struct tsens_priv { struct dentry *debug_root; struct dentry *debug; - struct tsens_sensor sensor[]; + struct tsens_sensor sensor[] __counted_by(num_sensors); }; /** -- 2.34.1
