tree 94db136cbede171936df076cfc34dfe351a17265
parent 142b942a75cb10ede1b42bf85368d41449ab4e3b
author Eric Dumazet <edumazet@google.com> 1436195606 +0200
committer David S. Miller <davem@davemloft.net> 1436395577 -0700

net: graceful exit from netif_alloc_netdev_queues()

User space can crash kernel with

ip link add ifb10 numtxqueues 100000 type ifb

We must replace a BUG_ON() by proper test and return -EINVAL for
crazy values.

Fixes: 60877a32bce00 ("net: allow large number of tx queues")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>