ipv6: In fragmentation code, handle error returned from register_pernet_subsys.
The error code is ignored now, but ipv6 is a module and one can
be loaded under memory pressure, so the error may occur (in theory).
Besides, I'm going to handle error returned from registering a
read-only part of the table, so ignoring this one, while handing
the other one would look strange.
(However, this possibility of error is rather small, so I'm not
sure whether this is a candidate for current net tree).
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 7e008de..130d6f6 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -750,7 +750,9 @@
if (ret)
goto out;
- register_pernet_subsys(&ip6_frags_ops);
+ ret = register_pernet_subsys(&ip6_frags_ops);
+ if (ret)
+ goto err_pernet;
ip6_frags.hashfn = ip6_hashfn;
ip6_frags.constructor = ip6_frag_init;
@@ -763,6 +765,10 @@
inet_frags_init(&ip6_frags);
out:
return ret;
+
+err_pernet:
+ inet6_del_protocol(&frag_protocol, IPPROTO_FRAGMENT);
+ goto out;
}
void ipv6_frag_exit(void)