net: graceful exit from netif_alloc_netdev_queues()

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[ Upstream commit d339727c2b ]

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: 60877a32bc ("net: allow large number of tx queues")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Eric Dumazet 2015-07-06 17:13:26 +02:00 • committed by Greg Kroah-Hartman

parent 56fd491a29

commit bd60ae48f7

1 changed files with 2 additions and 1 deletions

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net/core/dev.c

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