Re: [PATCH net] ipv4: fib: Fix NULL pointer deref during fib_sync_down_dev()

2017-07-31 Thread David Miller
From: Ido Schimmel Date: Fri, 28 Jul 2017 23:27:44 +0300 > Michał reported a NULL pointer deref during fib_sync_down_dev() when > unregistering a netdevice. The problem is that we don't check for > 'in_dev' being NULL, which can happen in very specific cases. > > Usually routes are flushed upon

Re: [PATCH net] ipv4: fib: Fix NULL pointer deref during fib_sync_down_dev()

2017-07-29 Thread Michał Mirosław
On Fri, Jul 28, 2017 at 11:27:44PM +0300, Ido Schimmel wrote: > Michał reported a NULL pointer deref during fib_sync_down_dev() when > unregistering a netdevice. The problem is that we don't check for > 'in_dev' being NULL, which can happen in very specific cases. > > Usually routes are flushed up

[PATCH net] ipv4: fib: Fix NULL pointer deref during fib_sync_down_dev()

2017-07-28 Thread Ido Schimmel
Michał reported a NULL pointer deref during fib_sync_down_dev() when unregistering a netdevice. The problem is that we don't check for 'in_dev' being NULL, which can happen in very specific cases. Usually routes are flushed upon NETDEV_DOWN sent in either the netdev or the inetaddr notification ch