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e23ed762db
Removing the ipset module leaves a small window where one cpu performs
module removal while another runs a command like 'ipset flush'.
ipset uses net_generic(), unregistering the pernet ops frees this
storage area.
Fix it by first removing the user-visible api handlers and the pernet
ops last.
Fixes: 1785e8f473 ("netfiler: ipset: Add net namespace for ipset")
Reported-by: Li Shuang <shuali@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>