[Openswan Users] klips_error:ipsec_xmit_encap_once: tried to skb_put 20, 16 available. This should never happen, please report.

[Danilo Godec]

 I have a server running OpenSwan 2.6.29, using MAST stack. The server
has three Xen VM's and currently 4 active LAN's behind. There is not a
lot of traffic yet, as the building is not quite finished...

If I connect to a VM and run a simple 'ls -lR /' it will sometimes get
'stuck'. At that moment, a lot of these messages appear on the IPSEC server:

> Oct  2 14:04:34 lmqxen1 kernel: [59061.763064]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:34 lmqxen1 kernel: [59061.768824]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:34 lmqxen1 kernel: [59061.774987]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:34 lmqxen1 kernel: [59061.782184]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:34 lmqxen1 kernel: [59061.788190]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:34 lmqxen1 kernel: [59061.794635]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:34 lmqxen1 kernel: [59061.800736]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:34 lmqxen1 kernel: [59061.806769]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:34 lmqxen1 kernel: [59062.009234]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:35 lmqxen1 kernel: [59062.417248]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:35 lmqxen1 kernel: [59063.233249]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:37 lmqxen1 kernel: [59064.865287]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.
> Oct  2 14:04:40 lmqxen1 kernel: [59068.129243]
> klips_error:ipsec_xmit_encap_once: tried to skb_put 21, 17 available. 
> This should never happen, please report.

I also see these messages when 'cfagent' (a part of 'cfengine') on a VM
copies files from the server and gets stuck...

Unfortunately I don't have any physical Linux boxes in those LANs to see
if the same happens on them...

Any ideas?

 Danilo