* [PATCH net-next] net: vxlan: check ipv6_mod_enabled() on neigh_reduce()
@ 2026-03-30 12:10 Fernando Fernandez Mancera
0 siblings, 0 replies; only message in thread
From: Fernando Fernandez Mancera @ 2026-03-30 12:10 UTC (permalink / raw)
To: netdev
Cc: sdf, petrm, idosch, razor, pabeni, kuba, edumazet, davem,
andrew+netdev, Fernando Fernandez Mancera
IPv6 must be enabled or otherwise neigh_reduce() might cause a kernel
panic. This was prevented by a check on in6_dev. Use ipv6_mod_enabled()
instead as it is cleaner and also consistent with the code at
route_shortcircuit().
Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
---
drivers/net/vxlan/vxlan_core.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
index b5fbd03418b6..b3b692c4b628 100644
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -2027,13 +2027,11 @@ static int neigh_reduce(struct net_device *dev, struct sk_buff *skb, __be32 vni)
struct vxlan_dev *vxlan = netdev_priv(dev);
const struct in6_addr *daddr;
const struct ipv6hdr *iphdr;
- struct inet6_dev *in6_dev;
struct neighbour *n;
struct nd_msg *msg;
rcu_read_lock();
- in6_dev = __in6_dev_get(dev);
- if (!in6_dev)
+ if (unlikely(!ipv6_mod_enabled()))
goto out;
iphdr = ipv6_hdr(skb);
--
2.53.0
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