From: patchwork-bot+netdevbpf@kernel.org
To: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Cc: netdev@vger.kernel.org, leitao@debian.org, davem@davemloft.net,
edumazet@kernel.org, kuba@kernel.org, pabeni@redhat.com,
horms@kernel.org, gnault@redhat.com, akinobu.mita@gmail.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net v3] net: fix NULL dereference in skb realloc fault injection devname filter
Date: Thu, 08 Oct 2026 18:10:06 +0000 [thread overview]
Message-ID: <179148300651.376744.893341011856074235.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20261007004158.1266795-1-yanhaishuang@cmss.chinamobile.com>
Hello:
This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Wed, 7 Oct 2026 08:41:58 +0800 you wrote:
> When a device name filter is set in
> /sys/kernel/debug/fail_skb_realloc/devname, should_fail_net_realloc_skb()
> compares it with skb->dev->name without checking skb->dev first.
>
> skb_might_realloc() is called from pskb_may_pull(), pskb_trim() and
> pskb_trim_rcsum(), which also run on skbs that are not associated with
> a device. One example is a netlink broadcast to a listener with a socket
> filter attached, which goes through sk_filter_trim_cap(). With the
> filter set, such an skb makes the kernel oops:
>
> [...]
Here is the summary with links:
- [net,v3] net: fix NULL dereference in skb realloc fault injection devname filter
https://git.kernel.org/netdev/net-next/c/670ff95811b0
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2026-10-08 18:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-07 0:41 [PATCH net v3] net: fix NULL dereference in skb realloc fault injection devname filter Haishuang Yan
2026-10-07 9:01 ` Breno Leitao
2026-10-08 18:10 ` patchwork-bot+netdevbpf [this message]
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