From: Simon Horman <horms@kernel.org>
To: Alexandre Cassen <acassen@corp.free.fr>
Cc: Saeed Mahameed <saeedm@nvidia.com>,
Leon Romanovsky <leon@kernel.org>,
Tariq Toukan <tariqt@nvidia.com>, Mark Bloch <mbloch@nvidia.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@kernel.org>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Moshe Shemesh <moshe@nvidia.com>,
Yevgeny Kliteynik <kliteyn@nvidia.com>,
netdev@vger.kernel.org, linux-rdma@vger.kernel.org
Subject: Re: [PATCH net v2 1/2] net/mlx5: HWS, fix reformat pool creation race
Date: Sun, 18 Oct 2026 15:18:01 +0100 [thread overview]
Message-ID: <20261018141801.GK503057@horms.kernel.org> (raw)
In-Reply-To: <20261012100555.1317878-2-acassen@corp.free.fr>
On Mon, Oct 12, 2026 at 12:05:53PM +0200, Alexandre Cassen wrote:
> mlx5_fs_get_pr_encap_pool() inserts a new pool when the lookup misses.
> Two callers allocating the first reformat of a size at once both
> create one and the second fails with -EBUSY. TC serializes these
> allocations under encap_tbl_lock while RDMA flow actions on the FDB
> don't.
>
> Sashiko AI review of an earlier series spotted this issue.
>
> Tested for regressions on ConnectX-7 with firmware 28.48.1000.
>
> Fixes: aecd9d1020e3 ("net/mlx5: fs, add HWS packet reformat API function")
> Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
> Signed-off-by: Alexandre Cassen <acassen@corp.free.fr>
Reviewed-by: Simon Horman <horms@kernel.org>
next prev parent reply other threads:[~2026-10-18 14:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-12 10:05 [PATCH net v2 0/2] net/mlx5: HWS, fix pool creation races Alexandre Cassen
2026-10-12 10:05 ` [PATCH net v2 1/2] net/mlx5: HWS, fix reformat pool creation race Alexandre Cassen
2026-10-13 10:08 ` sashiko-bot
2026-10-13 10:25 ` netdev-bot+sashiko
2026-10-18 14:18 ` Simon Horman [this message]
2026-10-12 10:05 ` [PATCH net v2 2/2] net/mlx5: HWS, fix modify header " Alexandre Cassen
2026-10-12 18:03 ` Moshe Shemesh
2026-10-13 10:08 ` sashiko-bot
2026-10-18 14:18 ` Simon Horman
2026-10-19 11:25 ` [PATCH net v2 0/2] net/mlx5: HWS, fix pool creation races Tariq Toukan
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