Re: [PATCH] iommufd/driver: Fix counter initialization for counted_by annotation

From: Nicolin Chen

Date: Tue Nov 11 2025 - 13:54:09 EST


On Tue, Nov 11, 2025 at 06:01:24PM +0900, Gustavo A. R. Silva wrote:
> One of the requirements for counted_by annotations is that the counter
> member must be initialized before the first reference to the
> flexible-array member.
>
> Move the vevent->data_len = data_len; initialization to before the
> first access to flexible array vevent->event_data.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: e8e1ef9b77a7 ("iommufd/viommu: Add iommufd_viommu_report_event helper")
> Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>

Reviewed-by: Nicolin Chen <nicolinc@xxxxxxxxxx>