Hi,
> -----Original Message-----
> From: Gregory Etelson <getel...@nvidia.com>
> Sent: Thursday, November 3, 2022 12:44 PM
> To: dev@dpdk.org
> Cc: Gregory Etelson <getel...@nvidia.com>; Matan Azrad
> <ma...@nvidia.com>; Raslan Darawsheh <rasl...@nvidia.com>;
> sta...@dpdk.org; Slava Ovsiienko <viachesl...@nvidia.com>; Anatoly
> Burakov <anatoly.bura...@intel.com>; Dmitry Kozlyuk
> <dkozl...@nvidia.com>
> Subject: [PATCH] common/mlx5: fix shared mempool subscription
>
> MLX5 PMD counted each mempool subscribe invocation. The PMD expected
> that the mempool subscription will be deleted after the mempool counter
> dropped to 0. However, current PMD design unsubscribes mempool
> callbacks only once.
> As the result, the PMD destroyed mlx5_common_device but kept shared RX
> subscription callback. EAL tried to activate that callback and crashed.
>
> The patch removes mempool subscriptions counter.
> The PMD registers mempool subscription once only. An attempt to register
> existing subscription returns EEXIST.
> Also, the PMD expects to remove subscription when mempool unsubscribe
> was activated.
>
> Fixes: 8ad97e4b3215 ("common/mlx5: fix multi-process mempool
> registration")
>
> Cc: sta...@dpdk.org
>
> Signed-off-by: Gregory Etelson <getel...@nvidia.com>
> Acked-by: Matan Azrad <ma...@nvidia.com>
Patch applied to next-net-mlx,
Kindest regards,
Raslan Darawsheh
