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 spmi_pmic_div_clk_cc. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Bjorn Andersson <andersson@xxxxxxxxxx> Cc: Andy Gross <agross@xxxxxxxxxx> Cc: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> Cc: Michael Turquette <mturquette@xxxxxxxxxxxx> Cc: Stephen Boyd <sboyd@xxxxxxxxxx> Cc: linux-arm-msm@xxxxxxxxxxxxxxx Cc: linux-clk@xxxxxxxxxxxxxxx Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> --- drivers/clk/qcom/clk-spmi-pmic-div.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/qcom/clk-spmi-pmic-div.c b/drivers/clk/qcom/clk-spmi-pmic-div.c index f846be285f51..f394031eb0e5 100644 --- a/drivers/clk/qcom/clk-spmi-pmic-div.c +++ b/drivers/clk/qcom/clk-spmi-pmic-div.c @@ -177,7 +177,7 @@ static const struct clk_ops clk_spmi_pmic_div_ops = { struct spmi_pmic_div_clk_cc { int nclks; - struct clkdiv clks[]; + struct clkdiv clks[] __counted_by(nclks); }; static struct clk_hw * -- 2.34.1
