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Subject: Re: [PATCH net] net: mana: Cap MSI-X vectors to the device MSI-X
 table
 size
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <178759861814.3069565.10209025813207370256.git-patchwork-notify@kernel.org>
Date: Mon, 24 Aug 2026 19:10:18 +0000
References: <20260821183736.733296-1-longli@microsoft.com>
In-Reply-To: <20260821183736.733296-1-longli@microsoft.com>
To: Long Li <longli@microsoft.com>
Cc: kotaranov@microsoft.com, kuba@kernel.org, davem@davemloft.net,
 pabeni@redhat.com, edumazet@google.com, andrew+netdev@lunn.ch, jgg@ziepe.ca,
 leon@kernel.org, haiyangz@microsoft.com, kys@microsoft.com,
 wei.liu@kernel.org, decui@microsoft.com, shradhagupta@linux.microsoft.com,
 horms@kernel.org, ernis@linux.microsoft.com, stephen@networkplumber.org,
 netdev@vger.kernel.org, linux-rdma@vger.kernel.org,
 linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Fri, 21 Aug 2026 11:37:36 -0700 you wrote:
> mana_gd_query_max_resources() sizes gc->num_msix_usable from resp.max_msix
> and the CPU count, but never from the device MSI-X table. On a 1792 vCPU
> M-series VM that yields 1793 while the table has 1024 entries, and
> mana_gd_setup_remaining_irqs() then walks indices 1..1792, running off the
> end of the region mapped by msix_map_region():
> 
>   BUG: unable to handle page fault for address: ff8e347f8b99800c
>   RIP: 0010:msix_prepare_msi_desc+0x7a/0x90
>   RAX: 0000000000004000 RBX: ff4330cb164ea780 RCX: ff8e347f8b998000
>   Call Trace:
>    <TASK>
>    __msi_domain_alloc_irqs+0x13a/0x440
>    msi_domain_alloc_irq_at+0x149/0x1b0
>    mana_gd_setup+0x351/0x890
>    mana_gd_probe+0x274/0x390
>    </TASK>
> 
> [...]

Here is the summary with links:
  - [net] net: mana: Cap MSI-X vectors to the device MSI-X table size
    https://git.kernel.org/netdev/net/c/2c7493f98014

You are awesome, thank you!
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