From: patchwork-bot+netdevbpf@kernel.org
To: Eric Dumazet <edumazet@kernel.org>
Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
horms@kernel.org, odys.yuan@gmail.com, kuniyu@google.com,
dsahern@kernel.org, idosch@nvidia.com, netdev@vger.kernel.org
Subject: Re: [PATCH net] ipv6: account route exceptions to the netns of their dst
Date: Tue, 20 Oct 2026 20:50:05 +0000 [thread overview]
Message-ID: <179252940578.202014.14262102316114186364.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20261016091556.2750902-1-edumazet@kernel.org>
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Fri, 16 Oct 2026 11:15:56 +0200 you wrote:
> rt6_insert_exception() and rt6_remove_exception() update
> rt6_stats->fib_rt_cache of dev_net(rt6i->dst.dev), but the device of an
> exception dst can move to another netns while the exception is still in
> its bucket.
>
> This happens when the bucket is flushed from an RCU callback, for
> instance from nexthop_free_rcu() for the nh_info of a replaced nexthop,
> whose exceptions still point to live routes. If the device moves to
> another netns before that callback runs, the decrement hits the other
> netns, whose u32 counter underflows in /proc/net/rt6_stats, while the
> counter of the original netns never goes back down.
>
> [...]
Here is the summary with links:
- [net] ipv6: account route exceptions to the netns of their dst
https://git.kernel.org/netdev/net/c/8ff017b891e8
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2026-10-20 20:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-16 9:15 [PATCH net] ipv6: account route exceptions to the netns of their dst Eric Dumazet
2026-10-16 9:19 ` netdev-bot+sinfo
2026-10-16 9:21 ` Eric Dumazet
2026-10-17 4:13 ` kuniyu
2026-10-18 15:25 ` Ido Schimmel
2026-10-20 20:50 ` patchwork-bot+netdevbpf [this message]
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