From: Paolo Abeni <pabeni@redhat.com>
To: saeedm@nvidia.com, tariqt@nvidia.com, mbloch@nvidia.com, leon@kernel.org
Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, kliteyn@nvidia.com, vdogaru@nvidia.com,
horms@kernel.org, kees@kernel.org, stable@vger.kernel.org,
netdev@vger.kernel.org, linux-rdma@vger.kernel.org,
linux-kernel@vger.kernel.org, jianhao.xu@seu.edu.cn,
zilin@seu.edu.cn, Dawei Feng <dawei.feng@seu.edu.cn>
Subject: Re: [PATCH net] net/mlx5: HWS, fix matcher leak on resize target setup failure
Date: Wed, 1 Jul 2026 16:38:33 +0200 [thread overview]
Message-ID: <8138f145-6a4d-465e-a45c-b8ffbf9e05bc@redhat.com> (raw)
In-Reply-To: <20260629064049.3852759-1-dawei.feng@seu.edu.cn>
On 6/29/26 8:40 AM, Dawei Feng wrote:
> hws_bwc_matcher_move() allocates a replacement matcher before setting it
> as the resize target. If mlx5hws_matcher_resize_set_target() fails, the
> replacement matcher is not attached anywhere and is leaked.
>
> Fix the leak by destroying the replacement matcher before returning from
> the resize-target failure path.
>
> The bug was first flagged by an experimental analysis tool we are
> developing for kernel memory-management bugs while analyzing
> v6.13-rc1. The tool is still under development and is not yet publicly
> available. Manual inspection confirms that the bug is still
> present in v7.1.1.
>
> An x86_64 allyesconfig build showed no new warnings. As we do not have a
> mlx5 HWS-capable device to test with, no runtime testing was able to be
> performed.
>
> Fixes: 2111bb970c78 ("net/mlx5: HWS, added backward-compatible API handling")
> Cc: stable@vger.kernel.org
> Signed-off-by: Dawei Feng <dawei.feng@seu.edu.cn>
@nvidia team, double checking I did not miss any relevant communication.
The last process update I recall is that one of the people listed in
maintainer file will ack patches for us to merge directly into the
net/net-next trees.
Should we consider any ack from @nvidia sufficient to take over?
Thanks,
Paolo
next prev parent reply other threads:[~2026-07-01 14:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-29 6:40 [PATCH net] net/mlx5: HWS, fix matcher leak on resize target setup failure Dawei Feng
2026-06-30 22:47 ` Yevgeny Kliteynik
2026-07-01 14:38 ` Paolo Abeni [this message]
2026-07-01 19:02 ` Tariq Toukan
2026-07-02 7:40 ` patchwork-bot+netdevbpf
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