netfilter: xt_CT: fix refcnt leak on error path
There are two cases which causes refcnt leak. 1. When nf_ct_timeout_ext_add failed in xt_ct_set_timeout, it should free the timeout refcnt. Now goto the err_put_timeout error handler instead of going ahead. 2. When the time policy is not found, we should call module_put. Otherwise, the related cthelper module cannot be removed anymore. It is easy to reproduce by typing the following command: # iptables -t raw -A OUTPUT -p tcp -j CT --helper ftp --timeout xxx Signed-off-by: Gao Feng <fgao@ikuai8.com> Signed-off-by: Liping Zhang <zlpnobody@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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