> Subject: [PATCH rdma-next v2 1/1] RDMA/mana_ib: Fix integer overflow during
> queue creation
>
> From: Konstantin Taranov <kotaranov@xxxxxxxxxxxxx>
>
> Check queue size during CQ creation for users to prevent overflow of u32.
>
> Fixes: bec127e45d9f ("RDMA/mana_ib: create kernel-level CQs")
> Signed-off-by: Konstantin Taranov <kotaranov@xxxxxxxxxxxxx>
Reviewed-by: Long Li <longli@xxxxxxxxxxxxx>
> ---
> v2: Only check the size of user CQs
>
> drivers/infiniband/hw/mana/cq.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/infiniband/hw/mana/cq.c b/drivers/infiniband/hw/mana/cq.c
> index 5c325ef..0fc4e26 100644
> --- a/drivers/infiniband/hw/mana/cq.c
> +++ b/drivers/infiniband/hw/mana/cq.c
> @@ -39,7 +39,8 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct
> ib_cq_init_attr *attr,
>
> is_rnic_cq = !!(ucmd.flags & MANA_IB_CREATE_RNIC_CQ);
>
> - if (!is_rnic_cq && attr->cqe > mdev->adapter_caps.max_qp_wr)
> {
> + if ((!is_rnic_cq && attr->cqe > mdev->adapter_caps.max_qp_wr)
> ||
> + attr->cqe > U32_MAX / COMP_ENTRY_SIZE) {
> ibdev_dbg(ibdev, "CQE %d exceeding limit\n", attr->cqe);
> return -EINVAL;
> }
> --
> 2.43.0
