[dpdk-stable] [dpdk-dev] [PATCH] net/mlx5: fix RxQ resource cleanup

[Raslan Darawsheh]

Hi,
> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Dmitry Kozlyuk
> Sent: Monday, October 18, 2021 8:25 PM
> To: dev at dpdk.org
> Cc: Michael Baum <michaelba at oss.nvidia.com>; stable at dpdk.org; Matan
> Azrad <matan at oss.nvidia.com>; Viacheslav Ovsiienko
> <viacheslavo at oss.nvidia.com>
> Subject: [dpdk-dev] [PATCH] net/mlx5: fix RxQ resource cleanup
> 
> mlx5_rxq_start() allocates rxq_ctrl->obj and frees it on failure, but did not
> set it to NULL. Later mlx5_rxq_release() could not recognize this object is
> already freed and attempted to release its resources, resulting in a crash:
> 
>     Configuring Port 0 (socket 0)
>     mlx5_common: Failed to create RQ using DevX
>     mlx5_common: Can't create DevX RQ object.
>     mlx5_net: Port 0 Rx queue 0 RQ creation failure.
>     Segmentation fault
> 
> Set rxq_ctrl->obj to NULL after it is freed to skip resource release.
> 
> Fixes: 1260a87b2889 ("net/mlx5: share Rx control code")
> Cc: Michael Baum <michaelba at nvidia.com>
> Cc: stable at dpdk.org
> 
> Signed-off-by: Dmitry Kozlyuk <dkozlyuk at nvidia.com>
> Acked-by: Matan Azrad <matan at nvidia.com>

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh