From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 346F933B6E8; Thu, 2 Jul 2026 16:38:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783010323; cv=none; b=lVNJ/yAzDu3TP4A8noG2GOedBqmz+sYV0aiTAjprxO26aLcRugvuGKIPSpmsH3eoiY05ebx5gsrvlXBuzx6OOe7Vt+XIJPoyIKNxI5ijKo4lDorH0zhOt7P2GZeZdOu919r824AmvS8qTTaIHmQvCF+vg62fhaz3i9M8SoTqOdk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783010323; c=relaxed/simple; bh=hyb1e0jUMzI179limywAB3MPe7+iJ5ISEDv4o6lT0/Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gHCZrpfGJxs6c0B9xcRmRqmxj0Z/irEMLh45QMtjzmCmkNVh0uuM6VRpoqJ/wrui4v0gq6racEqEou+11FRTV4hOS8hWK+y3lB+yh0V5GDQcCYwsjFa6T+VAJC3k2ZfYFhBQ2qfod61bhKN7/kUnpay0+AZSDpJB9Z8AK8w5bQs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=p41twiv9; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="p41twiv9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A230E1F000E9; Thu, 2 Jul 2026 16:38:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1783010322; bh=/uiEm20uUXLtic7s9zhDrDUbaTyzJN1Ah0MeoEiySg8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=p41twiv9SAEgYMYfo/29bEmcj7GpWC+pE3ANkNgKEHNR6RBq8D2kNzRExV2mhap7Y TiimA6Mtzz5XwabSdyy6014Fb58K5i7h5m0C9U0az/ygWzGorZxGKbhakuDVveFmV8 TPEpt28PfPFWtwSPnNYFFpFQsNvM28WLO0DiQ1Zc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Noam Rathaus , Eric Dumazet , Steffen Klassert , Nicolas Dichtel , Jakub Kicinski , Salvatore Bonaccorso , Sasha Levin Subject: [PATCH 6.12 021/204] ip6_vti: set netns_immutable on the fallback device. Date: Thu, 2 Jul 2026 18:17:58 +0200 Message-ID: <20260702155119.109077014@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260702155118.667618796@linuxfoundation.org> References: <20260702155118.667618796@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Eric Dumazet [ Upstream commit d289d5307762d1838aaece22c6b6fcad9e8865f9 ] john1988 and Noam Rathaus reported that vti6_init_net() does not set the netns_immutable flag on the per-netns fallback tunnel device (ip6_vti0). Other similar tunnel drivers (like ip6_tunnel, sit, ip6_gre, and ip_tunnel) correctly set this flag during their fallback device initialization to prevent them from being moved to another network namespace. Fixes: 61220ab34948 ("vti6: Enable namespace changing") Reported-by: Noam Rathaus Signed-off-by: Eric Dumazet Cc: Steffen Klassert Reviewed-by: Nicolas Dichtel Link: https://patch.msgid.link/20260608155918.787644-1-edumazet@google.com Signed-off-by: Jakub Kicinski [Salvatore Bonaccorso: Backport for version without 0c493da86374 ("net: rename netns_local to netns_immutable") in v6.15-rc1 and use netns_local.] Signed-off-by: Salvatore Bonaccorso Signed-off-by: Sasha Levin --- net/ipv6/ip6_vti.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c index 6fe696939d041e..e0e6e67a25e0a2 100644 --- a/net/ipv6/ip6_vti.c +++ b/net/ipv6/ip6_vti.c @@ -1159,6 +1159,7 @@ static int __net_init vti6_init_net(struct net *net) goto err_alloc_dev; dev_net_set(ip6n->fb_tnl_dev, net); ip6n->fb_tnl_dev->rtnl_link_ops = &vti6_link_ops; + ip6n->fb_tnl_dev->netns_local = true; err = vti6_fb_tnl_dev_init(ip6n->fb_tnl_dev); if (err < 0) -- 2.53.0