Re: [PATCH 2/6] irqchip/gic-v3-its: Fix memleak in its_probe_one()

[Marc Zyngier <maz@kernel.org>]

On Mon, 15 Jun 2026 04:29:06 +0100,
Kemeng Shi <shikemeng@huaweicloud.com> wrote:
> 
> Fix collection leak when its_init_domain() failed in its_probe_one().
> 
> Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
> ---
>  drivers/irqchip/irq-gic-v3-its.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
> index 2b7b546c43c8..df26ddc97ae2 100644
> --- a/drivers/irqchip/irq-gic-v3-its.c
> +++ b/drivers/irqchip/irq-gic-v3-its.c
> @@ -3032,6 +3032,12 @@ static int its_alloc_collections(struct its_node *its)
>  	return 0;
>  }
>  
> +static void its_free_collections(struct its_node *its)
> +{
> +	kfree(its->collections);
> +	its->collections = NULL;
> +}

Why do we need an extra helper for something that has a single calling
spot? Why is it important to set collections to NULL, given that we're
about to free the structure without even looking further?

	M.

-- 
Jazz isn't dead. It just smells funny.