Re: [PATCH] gpio: sodaville: fix use-after-free bug when registering the irqchip

[Linus Walleij]

On Thu, Nov 5, 2026 at 2:14 PM Bartosz Golaszewski
<bartosz.golaszewski@xxxxxxxxxxxxxxxx> wrote:

> In sdv_register_irqsupport(), if irq_domain_create_legacy() fails during
> device probing, a generic IRQ chip is left registered in the global gc_list
> while its underlying memory is freed, leading to a use-after-free. Use
> the managed variant of irq_setup_generic_chip() to ensure that the chip
> gets unregistered before the memory it uses is freed.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 9381fc5d655d ("gpio: sodaville: Convert to use managed functions pcim_* and devm_*")
> Closes: https://sashiko.dev/#/bug/linux-2f7ac8b6-5034-4ff1-9afa-5700ff44e3e9
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>

Reviewed-by: Linus Walleij <linusw@xxxxxxxxxx>

Yours,
Linus Walleij