Re: [Patch net v2] ipt_CLUSTERIP: fix a refcount bug in clusterip_config_find_get()

On Thu, Feb 08, 2018 at 01:53:52PM -0800, Cong Wang wrote:

In clusterip_config_find_get() we hold RCU read lock so it could
run concurrently with clusterip_config_entry_put(), as a result,
the refcnt could go back to 1 from 0, which leads to a double
list_del()... Just replace refcount_inc() with
refcount_inc_not_zero(), as for c->refcount.

Applied, thanks Cong.