Re: [PATCH net] netfilter: nf_flow_table: drop existing skb dst before skb_dst_set_noref()

[email protected] Thu, 06 Aug 2026 00:20:08 +0000

Newsgroups	gmane.linux.network,gmane.comp.security.firewalls.netfilter.devel
Message-ID	<178597560839.575509.1356511922096738928.git-patchwork-notify@kernel.org>

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <[email protected]>:

On Tue,  4 Aug 2026 09:33:28 +0000 you wrote:
> Incoming skbs passing through netfilter flowtable offload hooks (or XFRM
> offload path) might already carry a ref-counted dst_entry assigned during
> earlier RX or routing steps.
> 
> Calling skb_dst_set_noref() when skb already holds a ref-counted dst
> overwrites skb->_skb_refdst, leaking the previous dst_entry reference
> count and triggering a DEBUG_NET_WARN_ON_ONCE assertion in
> skb_dst_check_unset():
> 
> [...]

Here is the summary with links:
  - [net] netfilter: nf_flow_table: drop existing skb dst before skb_dst_set_noref()
    https://git.kernel.org/netdev/net/c/8aecf0bbcc72

You are awesome, thank you!
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