From: patchwork-bot+netdevbpf@kernel.org
To: Eric Dumazet <edumazet@google.com>
Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
horms@kernel.org, andrew+netdev@lunn.ch, idosch@nvidia.com,
kuniyu@google.com, lorenzo.bianconi@oss.qualcomm.com,
iprintercanon@gmail.com, netdev@vger.kernel.org,
eric.dumazet@gmail.com
Subject: Re: [PATCH net-next 0/9] sit: convert configuration to RCU and lockless fill_info
Date: Fri, 11 Sep 2026 01:40:05 +0000 [thread overview]
Message-ID: <178909080588.2176188.854927325558250521.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <20260907075846.2913645-1-edumazet@google.com>
Hello:
This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Mon, 7 Sep 2026 07:58:37 +0000 you wrote:
> SIT (IPv6-in-IPv4) tunnel configuration and status reporting have
> historically relied on the RTNL lock for synchronization. Consequently,
> netlink dumps via ipip6_fill_info() had to run with RTNL held, adding
> contention during network device dumps.
>
> At the same time, the transmit path (dev->lltx == true), tunnel lookups,
> and error handling run locklessly and can race with configuration
> updates. This can result in torn reads of multi-word fields (such as the
> 128-bit 6RD IPv6 prefix) or transiently zeroed encapsulation parameters.
> Furthermore, ipip6_tunnel_update() currently unhashes, re-hashes, and
> calls synchronize_net() unconditionally, even when the tunnel endpoint
> addresses (saddr and daddr) have not changed.
>
> [...]
Here is the summary with links:
- [net-next,1/9] sit: fix UAF in ipip6_tunnel_del_prl()
https://git.kernel.org/netdev/net-next/c/5145bb6a2c26
- [net-next,2/9] sit: charge ip_tunnel_prl_entry allocations to memcg
https://git.kernel.org/netdev/net-next/c/40a2b90f5190
- [net-next,3/9] ip_tunnel: use WRITE_ONCE in ip_tunnel_encap_setup
https://git.kernel.org/netdev/net-next/c/88b84cae6b94
- [net-next,4/9] sit: annotate data-races around tunnel->fwmark
https://git.kernel.org/netdev/net-next/c/b5e8eadb1c8a
- [net-next,5/9] sit: convert 6RD configuration to RCU protection
https://git.kernel.org/netdev/net-next/c/eaa2098a94cd
- [net-next,6/9] sit: implement ipip6_get_iflink()
https://git.kernel.org/netdev/net-next/c/e3434672b7ad
- [net-next,7/9] sit: dynamically allocate struct ip_tunnel_parm_kern
https://git.kernel.org/netdev/net-next/c/3cd52b7c0bbf
- [net-next,8/9] sit: convert configuration to RCU protection
https://git.kernel.org/netdev/net-next/c/0301127e4d98
- [net-next,9/9] sit: no longer rely on RTNL in ipip6_fill_info()
https://git.kernel.org/netdev/net-next/c/f712bf6f17d8
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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prev parent reply other threads:[~2026-09-11 1:41 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-07 7:58 [PATCH net-next 0/9] sit: convert configuration to RCU and lockless fill_info Eric Dumazet
2026-09-07 7:58 ` [PATCH net-next 1/9] sit: fix UAF in ipip6_tunnel_del_prl() Eric Dumazet
2026-09-07 12:28 ` Lorenzo Bianconi
2026-09-07 7:58 ` [PATCH net-next 2/9] sit: charge ip_tunnel_prl_entry allocations to memcg Eric Dumazet
2026-09-07 12:35 ` Lorenzo Bianconi
2026-09-07 7:58 ` [PATCH net-next 3/9] ip_tunnel: use WRITE_ONCE in ip_tunnel_encap_setup Eric Dumazet
2026-09-07 15:12 ` Lorenzo Bianconi
2026-09-08 11:00 ` netdev-bot+sashiko
2026-09-07 7:58 ` [PATCH net-next 4/9] sit: annotate data-races around tunnel->fwmark Eric Dumazet
2026-09-07 15:12 ` Lorenzo Bianconi
2026-09-08 11:00 ` netdev-bot+sashiko
2026-09-07 7:58 ` [PATCH net-next 5/9] sit: convert 6RD configuration to RCU protection Eric Dumazet
2026-09-07 13:00 ` Lorenzo Bianconi
2026-09-08 11:00 ` netdev-bot+sashiko
2026-09-07 7:58 ` [PATCH net-next 6/9] sit: implement ipip6_get_iflink() Eric Dumazet
2026-09-07 13:01 ` Lorenzo Bianconi
2026-09-07 7:58 ` [PATCH net-next 7/9] sit: dynamically allocate struct ip_tunnel_parm_kern Eric Dumazet
2026-09-07 13:16 ` Lorenzo Bianconi
2026-09-07 13:34 ` Artem Lytkin
2026-09-07 13:48 ` Eric Dumazet
2026-09-08 11:00 ` netdev-bot+sashiko
2026-09-07 7:58 ` [PATCH net-next 8/9] sit: convert configuration to RCU protection Eric Dumazet
2026-09-07 14:32 ` Lorenzo Bianconi
2026-09-07 14:42 ` Eric Dumazet
2026-09-08 11:00 ` netdev-bot+sashiko
2026-09-07 7:58 ` [PATCH net-next 9/9] sit: no longer rely on RTNL in ipip6_fill_info() Eric Dumazet
2026-09-07 15:04 ` Lorenzo Bianconi
2026-09-11 1:40 ` patchwork-bot+netdevbpf [this message]
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