[PATCH] net/mlx5: fix uninitialized skip count

[Raslan Darawsheh]

Hi,


On 15/05/2026 3:33 PM, Dariusz Sosnowski wrote:
> From: Kiran Vedere <kiranv at nvidia.com>
> 
> mlx5_rx_poll_len() may return MLX5_ERROR_CQE_MASK when
> mlx5_rx_err_handle() reports MLX5_CQE_STATUS_HW_OWN while the Rx queue
> is in IGNORE error state. In this HW_OWN case mlx5_rx_err_handle()
> does not necessarily write to *skip_cnt, yet the caller (mlx5_rx_burst)
> unconditionally uses skip_cnt to advance rq_ci.
> 
> This can cause rq_ci to jump by an undefined value, desynchronizing the
> RQ and CQ rings and leading to persistent bad packet delivery until the
> queue is reset.
> 
> Fixes: aa67ed308458 ("net/mlx5: ignore non-critical syndromes for Rx queue")
> Cc: akozyrev at nvidia.com
> Cc: stable at dpdk.org
> 
> Signed-off-by: Kiran Vedere <kiranv at nvidia.com>
> Acked-by: Dariusz Sosnowski <dsosnowski at nvidia.com>
Patch applied to next-net-mlx,

Kindest regards
Raslan Darawsheh