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| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:51:32 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2023-10-08 22:46:04 -0700 |
| commit | 0f768682452867588d640b1bc1a5afdd1b59c584 (patch) | |
| tree | e9d7adfc2d0fd223f8ec1b2067b86b293269171d /drivers/irqchip | |
| parent | a48e1f656b3c9b8192b6ca6fc92ef4daa30535fb (diff) | |
| download | lwn-0f768682452867588d640b1bc1a5afdd1b59c584.tar.gz lwn-0f768682452867588d640b1bc1a5afdd1b59c584.zip | |
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: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175131.work.718-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-imx-intmux.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/irqchip/irq-imx-intmux.c b/drivers/irqchip/irq-imx-intmux.c index 6d9a08238c9d..aa041e4dfee0 100644 --- a/drivers/irqchip/irq-imx-intmux.c +++ b/drivers/irqchip/irq-imx-intmux.c @@ -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) |