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Miller" , Paolo Abeni , Eric Dumazet , David Ahern Cc: Kuniyuki Iwashima , Steffen Klassert , Xiao Liang , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH net v4 0/2] ip6_vti: vti6_changelink and vti6_siocdevprivate netns fixes Date: Thu, 21 May 2026 21:05:53 +0800 Message-Id: <20260521130555.3421684-1-maoyixie.tju@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit v3 -> v4 - Update Fixes tag on both patches to commit 61220ab34948 ("vti6: Enable namespace changing"). Xiao noted the old tag 5e72ce3e3980 is not the introducing commit. dev_net(dev) and t->net first diverge when 61220ab34948 dropped NETIF_F_NETNS_LOCAL and made vti6 devices movable through IFLA_NET_NS_FD. Same Fixes shape Jakub took for the sibling fix 1d324c2f43f7. - 2/2 adds ns_capable(self->net->user_ns, CAP_NET_ADMIN) inside the non fallback SIOCCHGTUNNEL branch. The check at the top of the case is against dev_net(dev)->user_ns only. A caller in the migrated netns can pick params absent from self->net, the lookup returns NULL, t becomes self, and vti6_update() inserts the device into self->net's hash. v3 did not close that path. 1/2 carries forward Eric Dumazet's Reviewed-by. Only the Fixes tag changes there. 2/2 changes the Fixes tag and adds the ns_capable hunk. Kuniyuki Iwashima (1): ip6: vti: Use ip6_tnl.net in vti6_changelink(). Maoyi Xie (1): ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate(). net/ipv6/ip6_vti.c | 23 ++++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-) -- 2.34.1