Commit 4ae28944 authored by Pavel Emelyanov's avatar Pavel Emelyanov Committed by David S. Miller

[NEIGH]: Ensure that pneigh_lookup is protected with RTNL

The pnigh_lookup is used to lookup proxy entries and to 
create them in case lookup failed. 

However, the "creation" code does not perform the re-lookup
after GFP_KERNEL allocation. This is done because the code
is expected to be protected with the RTNL lock, so add the 
assertion (mainly to address future questions from new network 
developers like me :) ).
Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f1673ca5
......@@ -481,6 +481,8 @@ struct pneigh_entry * pneigh_lookup(struct neigh_table *tbl, const void *pkey,
if (!creat)
goto out;
ASSERT_RTNL();
n = kmalloc(sizeof(*n) + key_len, GFP_KERNEL);
if (!n)
goto out;
......
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