linux-kernel - Re: [PATCH 1/2] vdpa/mlx5: Fix umem sizes assignments on VQ create

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20210530040458-mutt-send-email-mst@kernel.org>
Date:   Sun, 30 May 2021 04:05:16 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Eli Cohen <elic@...dia.com>
Cc:     jasowang@...hat.com, virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] vdpa/mlx5: Fix umem sizes assignments on VQ create

On Sun, May 30, 2021 at 09:31:28AM +0300, Eli Cohen wrote:
> Fix copy paste bug assigning umem1 size to umem2 and umem3.
> 
> Fixes: 1a86b377aa21 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
> Signed-off-by: Eli Cohen <elic@...dia.com>

could you clarify the impact of the bug please?

> ---
>  drivers/vdpa/mlx5/net/mlx5_vnet.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c
> index 189e4385df40..53312f0460ad 100644
> --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
> +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
> @@ -828,9 +828,9 @@ static int create_virtqueue(struct mlx5_vdpa_net *ndev, struct mlx5_vdpa_virtque
>  	MLX5_SET(virtio_q, vq_ctx, umem_1_id, mvq->umem1.id);
>  	MLX5_SET(virtio_q, vq_ctx, umem_1_size, mvq->umem1.size);
>  	MLX5_SET(virtio_q, vq_ctx, umem_2_id, mvq->umem2.id);
> -	MLX5_SET(virtio_q, vq_ctx, umem_2_size, mvq->umem1.size);
> +	MLX5_SET(virtio_q, vq_ctx, umem_2_size, mvq->umem2.size);
>  	MLX5_SET(virtio_q, vq_ctx, umem_3_id, mvq->umem3.id);
> -	MLX5_SET(virtio_q, vq_ctx, umem_3_size, mvq->umem1.size);
> +	MLX5_SET(virtio_q, vq_ctx, umem_3_size, mvq->umem3.size);
>  	MLX5_SET(virtio_q, vq_ctx, pd, ndev->mvdev.res.pdn);
>  	if (MLX5_CAP_DEV_VDPA_EMULATION(ndev->mvdev.mdev, eth_frame_offload_type))
>  		MLX5_SET(virtio_q, vq_ctx, virtio_version_1_0, 1);
> -- 
> 2.31.1