Merge branch 'for-4.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...

[cascardo/linux.git] / net / netlink / af_netlink.c

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 81dc1bb..f1ffb34 100644 (file)
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2831,7 +2831,8 @@ static int netlink_dump(struct sock *sk)
         * reasonable static buffer based on the expected largest dump of a
         * single netdev. The outcome is MSG_TRUNC error.
         */
-       skb_reserve(skb, skb_tailroom(skb) - alloc_size);
+       if (!netlink_rx_is_mmaped(sk))
+               skb_reserve(skb, skb_tailroom(skb) - alloc_size);
        netlink_skb_set_owner_r(skb, sk);
 
        len = cb->dump(skb, cb);