From: sashiko-bot@kernel.org
To: "Tariq Toukan" <tariqt@nvidia.com>
Cc: linux-rdma@vger.kernel.org
Subject: Re: [PATCH net] net/mlx5: Bridge, fix bogus MDB offload errors
Date: Wed, 21 Oct 2026 12:29:04 +0000 [thread overview]
Message-ID: <sashiko-outbox-180252@kernel.org> (raw)
In-Reply-To: <20261021122115.3737284-1-tariqt@nvidia.com>
> From: Gal Pressman <gal@nvidia.com>
>
> MDB add operations are queued on the switchdev deferred queue
> (SWITCHDEV_F_DEFER), while vlan object deletions are handled
> synchronously.
> A 'bridge vlan del' can overtake an MDB add that is still queued, and
> the vlan is already gone by the time the driver is called.
>
> The two operations are independent in practice: in my test, the MDB add
> is triggered by assigning the VF an IPv6 address (hence joining a
> solicited-node multicast group), while another process deletes the vlan
> from its representor.
>
> Racing 'bridge mdb add' against concurrent 'bridge vlan del' could
> result in:
> [ ... ]
>
> Fixes: 70f0302b3f20 ("net/mlx5: Bridge, implement mdb offload")
> Signed-off-by: Gal Pressman <gal@nvidia.com>
> Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
> Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261021122115.3737284-1-tariqt@nvidia.com?part=1
prev parent reply other threads:[~2026-10-21 12:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-21 12:21 [PATCH net] net/mlx5: Bridge, fix bogus MDB offload errors Tariq Toukan
2026-10-21 12:29 ` sashiko-bot [this message]
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