{"id":2223412,"url":"http://patchwork.ozlabs.org/api/covers/2223412/?format=json","web_url":"http://patchwork.ozlabs.org/project/ubuntu-kernel/cover/20260415094014.88977-1-mehmet.basaran@canonical.com/","project":{"id":15,"url":"http://patchwork.ozlabs.org/api/projects/15/?format=json","name":"Ubuntu Kernel","link_name":"ubuntu-kernel","list_id":"kernel-team.lists.ubuntu.com","list_email":"kernel-team@lists.ubuntu.com","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260415094014.88977-1-mehmet.basaran@canonical.com>","list_archive_url":null,"date":"2026-04-15T09:40:13","name":"[REGRESSION,N,0/1] Fix Upstream stable v6.6.122, v6.12.67, v6.12.68","submitter":{"id":89305,"url":"http://patchwork.ozlabs.org/api/people/89305/?format=json","name":"Mehmet Basaran","email":"mehmet.basaran@canonical.com"},"mbox":"http://patchwork.ozlabs.org/project/ubuntu-kernel/cover/20260415094014.88977-1-mehmet.basaran@canonical.com/mbox/","series":[{"id":499950,"url":"http://patchwork.ozlabs.org/api/series/499950/?format=json","web_url":"http://patchwork.ozlabs.org/project/ubuntu-kernel/list/?series=499950","date":"2026-04-15T09:40:13","name":"Fix Upstream stable v6.6.122, v6.12.67, v6.12.68","version":1,"mbox":"http://patchwork.ozlabs.org/series/499950/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2223412/comments/","headers":{"Return-Path":"<kernel-team-bounces@lists.ubuntu.com>","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (4096-bit key;\n unprotected) header.d=canonical.com header.i=@canonical.com\n header.a=rsa-sha256 header.s=20251003 header.b=EypBhq7p;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com\n (client-ip=185.125.189.65; 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charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"kernel-team-bounces@lists.ubuntu.com","Sender":"\"kernel-team\" <kernel-team-bounces@lists.ubuntu.com>"},"content":"== Justification ==\n\nImpact:\nThe upstream stable v6.6.122, v6.12.67, v6.12.68 update included a \nchange to __ip6_tnl_rcv() which does not work for kernels <v6.13 \n(this might be important if the following is ever picked):\n\nf842901be344 \"ip6_tunnel: use skb_vlan_inet_prepare() in __ip6_tnl_rcv()\"\n\nAbove patch replaces pskb_inet_may_pull() with skb_vlan_inet_prepare().\nThe problem is that around v6.13 there was\n\n\"net: tunnel: make skb_vlan_inet_prepare() return drop reasons\"\n\nwhich changes return values of skb_vlan_inet_prepare(). Before a non\nzero return code meant success while after it is the opposite.\n\nFix:\nInstead of pulling another dependency the proposed fix changes usage to\nother callers of skb_vlan_inet_prepare() in v6.8 \n(bareudp.c/geneve.c/vxlan_core.c).\n\nTestcase:\nRunning the ubuntu_kselftests_net:net:l2_tos_ttl_inherit.sh fail (timeout)\nwithout the fix. After applying the test passes again.\n\nMehmet Basaran (1):\n  UBUNTU: SAUCE: Fix skb_vlan_inet_prepare() usage\n\n net/ipv6/ip6_tunnel.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)"}