tree 9e0f7e4476b524263e403ff8be2acb6a9746cddb
parent 6b73d19711d0989cbdcd19c61faa0f79a1a5e466
author Eric Dumazet <edumazet@google.com> 1559001408 -0700
committer David S. Miller <davem@davemloft.net> 1559089335 -0700

inet: frags: call inet_frags_fini() after unregister_pernet_subsys()

Both IPv6 and 6lowpan are calling inet_frags_fini() too soon.

inet_frags_fini() is dismantling a kmem_cache, that might be needed
later when unregister_pernet_subsys() eventually has to remove
frags queues from hash tables and free them.

This fixes potential use-after-free, and is a prereq for the following patch.

Fixes: d4ad4d22e7ac ("inet: frags: use kmem_cache for inet_frag_queue")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>