Commit f6f2a4a2 authored Jul 06, 2018 by Paolo Abeni Committed by David S. Miller Jul 08, 2018

ipfrag: really prevent allocation on netns exit



Setting the low threshold to 0 has no effect on frags allocation,
we need to clear high_thresh instead.

The code was pre-existent to commit 648700f7 ("inet: frags:
use rhashtables for reassembly units"), but before the above,
such assignment had a different role: prevent concurrent eviction
from the worker and the netns cleanup helper.

Fixes: 648700f7 ("inet: frags: use rhashtables for reassembly units")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent acc2cf4e

net/ipv4/inet_fragment.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -90,7 +90,7 @@ static void inet_frags_free_cb(void ptr, void arg)

		void inet_frags_exit_net(struct netns_frags *nf)
		{
		nf->low_thresh = 0; /* prevent creation of new frags */
		nf->high_thresh = 0; /* prevent creation of new frags */

		rhashtable_free_and_destroy(&nf->rhashtable, inet_frags_free_cb, NULL);
		}