From: patchwork-bot+netdevbpf@kernel.org
To: Erni Sri Satya Vennela <ernis@linux.microsoft.com>
Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
decui@microsoft.com, longli@microsoft.com, andrew+netdev@lunn.ch,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, horms@kernel.org,
shradhagupta@linux.microsoft.com, dipayanroy@linux.microsoft.com,
yury.norov@gmail.com, linux-hyperv@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next v2] net: mana: hardening: Reject zero max_num_queues from GDMA_QUERY_MAX_RESOURCES
Date: Tue, 05 May 2026 02:30:20 +0000 [thread overview]
Message-ID: <177794822004.1394832.4803471358610574659.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260430083627.1873757-1-ernis@linux.microsoft.com>
Hello:
This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Thu, 30 Apr 2026 01:36:21 -0700 you wrote:
> In a CVM environment, hardware responses cannot be trusted. The
> GDMA_QUERY_MAX_RESOURCES command returns resource limits used to
> determine the maximum number of queues.
>
> In mana_gd_query_max_resources(), gc->max_num_queues is initialized
> from num_online_cpus() and successively clamped by the hardware-reported
> max_eq, max_cq, max_sq, max_rq, and num_msix_usable values. If any of
> these hardware values is zero, gc->max_num_queues becomes zero and the
> function returns success. This leads to a confusing failure later when
> alloc_etherdev_mq() is called with zero queues, returning NULL and
> producing a misleading -ENOMEM error.
>
> [...]
Here is the summary with links:
- [net-next,v2] net: mana: hardening: Reject zero max_num_queues from GDMA_QUERY_MAX_RESOURCES
https://git.kernel.org/netdev/net-next/c/f7622e58e802
You are awesome, thank you!
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prev parent reply other threads:[~2026-05-05 2:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-30 8:36 [PATCH net-next v2] net: mana: hardening: Reject zero max_num_queues from GDMA_QUERY_MAX_RESOURCES Erni Sri Satya Vennela
2026-05-02 14:44 ` Shradha Gupta
2026-05-05 2:30 ` patchwork-bot+netdevbpf [this message]
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