From: patchwork-bot+netdevbpf@kernel.org
To: Fernando Fernandez Mancera <fmancera@suse.de>
Cc: netdev@vger.kernel.org, csmate@nop.hu, kerneljasonxing@gmail.com,
maciej.fijalkowski@intel.com, bpf@vger.kernel.org,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, horms@kernel.org, sdf@fomichev.me,
hawk@kernel.org, daniel@iogearbox.net, ast@kernel.org,
john.fastabend@gmail.com, magnus.karlsson@intel.com
Subject: Re: [PATCH net v6] xsk: avoid data corruption on cq descriptor number
Date: Wed, 26 Nov 2025 04:00:06 +0000 [thread overview]
Message-ID: <176412960651.1513924.4064352345159631206.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20251124171409.3845-1-fmancera@suse.de>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Mon, 24 Nov 2025 18:14:09 +0100 you wrote:
> Since commit 30f241fcf52a ("xsk: Fix immature cq descriptor
> production"), the descriptor number is stored in skb control block and
> xsk_cq_submit_addr_locked() relies on it to put the umem addrs onto
> pool's completion queue.
>
> skb control block shouldn't be used for this purpose as after transmit
> xsk doesn't have control over it and other subsystems could use it. This
> leads to the following kernel panic due to a NULL pointer dereference.
>
> [...]
Here is the summary with links:
- [net,v6] xsk: avoid data corruption on cq descriptor number
https://git.kernel.org/netdev/net/c/0ebc27a4c67d
You are awesome, thank you!
--
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next prev parent reply other threads:[~2025-11-26 4:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-24 17:14 [PATCH net v6] xsk: avoid data corruption on cq descriptor number Fernando Fernandez Mancera
2025-11-24 23:03 ` Maciej Fijalkowski
2025-11-24 23:41 ` Jason Xing
2025-11-25 11:40 ` Fernando Fernandez Mancera
2025-11-25 12:11 ` Jason Xing
2025-11-25 16:31 ` Maciej Fijalkowski
2025-11-26 1:14 ` Jason Xing
2025-11-26 9:15 ` Fernando Fernandez Mancera
2025-11-26 11:00 ` Jason Xing
2025-11-26 4:00 ` patchwork-bot+netdevbpf [this message]
2025-11-26 11:42 ` [PATCH net v6] xsk: avoid data corruption on cq descriptor number: manual merge Matthieu Baerts
2025-11-26 12:05 ` Fernando Fernandez Mancera
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