This is a note to let you know that I've just added the patch titled ipv6: delay fib6_sernum increase in fib6_add to the 5.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ipv6-delay-fib6_sernum-increase-in-fib6_add.patch and it can be found in the queue-5.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 1e6f7a9658b549594fb759728797fb22f8c658ac Author: zhang kai <zhangkaiheb@xxxxxxx> Date: Thu Sep 9 16:39:18 2021 +0800 ipv6: delay fib6_sernum increase in fib6_add [ Upstream commit e87b5052271e39d62337ade531992b7e5d8c2cfa ] only increase fib6_sernum in net namespace after add fib6_info successfully. Signed-off-by: zhang kai <zhangkaiheb@xxxxxxx> Reviewed-by: David Ahern <dsahern@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index ef75c9b05f17..68e94e9f5089 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -1378,7 +1378,6 @@ int fib6_add(struct fib6_node *root, struct fib6_info *rt, int err = -ENOMEM; int allow_create = 1; int replace_required = 0; - int sernum = fib6_new_sernum(info->nl_net); if (info->nlh) { if (!(info->nlh->nlmsg_flags & NLM_F_CREATE)) @@ -1478,7 +1477,7 @@ int fib6_add(struct fib6_node *root, struct fib6_info *rt, if (!err) { if (rt->nh) list_add(&rt->nh_list, &rt->nh->f6i_list); - __fib6_update_sernum_upto_root(rt, sernum); + __fib6_update_sernum_upto_root(rt, fib6_new_sernum(info->nl_net)); fib6_start_gc(info->nl_net, rt); }