Commit 0f768682 authored by Kees Cook's avatar Kees Cook
Browse files

irqchip/imx-intmux: Annotate struct intmux_data with __counted_by 

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 intmux_data.

[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci



Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: linux-arm-kernel@lists.infradead.org
Reviewed-by: default avatar"Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175131.work.718-kees@kernel.org


Signed-off-by: default avatarKees Cook <keescook@chromium.org>
parent a48e1f65

drivers/irqchip/irq-imx-intmux.c

+1 −1
Original line number Diff line number Diff line
@@ -73,7 +73,7 @@ struct intmux_data { 
	void __iomem			*regs;

	struct clk			*ipg_clk;

	int				channum;

	struct intmux_irqchip_data	irqchip_data[];

	struct intmux_irqchip_data	irqchip_data[] __counted_by(channum);

};



static void imx_intmux_irq_mask(struct irq_data *d)