Hi

With kernel 4.14.122, I am getting a kernel softlockup while running single 
static ipsec tunnel.
The problem reproduces mostly after running 8-10 hours of ipsec encap test (on 
my dual core arm board).

I found that in function xfrm_policy_lookup_bytype(), the policy in variable 
'ret' shows refcnt=0 under problem situation.
This creates an infinite loop in  xfrm_policy_lookup_bytype() and hence the 
lockup.

Can some body please provide me pointers about 'refcnt'?
Is it legitimate for 'refcnt' to become '0'? Under what condition can it become 
'0'?

Regards
Vakul

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