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net: Initialise init_net.count to 1

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Initialise init_net.count to 1 for its pointer from init_nsproxy lest
someone tries to do a get_net() and a put_net() in a process in which
current->ns_proxy->net_ns points to the initial network namespace.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Howells 2017-04-27 22:40:23 +01:00 committed by David S. Miller
parent 5e0740c445
commit b5082df801
1 changed files with 2 additions and 1 deletions
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1
net/core/net_namespace.c
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@ -35,6 +35,7 @@ LIST_HEAD(net_namespace_list);
EXPORT_SYMBOL_GPL(net_namespace_list); EXPORT_SYMBOL_GPL(net_namespace_list);
struct net init_net = { struct net init_net = {
.count = ATOMIC_INIT(1),
.dev_base_head = LIST_HEAD_INIT(init_net.dev_base_head), .dev_base_head = LIST_HEAD_INIT(init_net.dev_base_head),
}; };
EXPORT_SYMBOL(init_net); EXPORT_SYMBOL(init_net);