From: Mahesh Bandewar <mah...@bandewar.net> Date: Thu, 1 Sep 2016 22:18:34 -0700
> From: Mahesh Bandewar <mahe...@google.com> > > Following few steps will crash kernel - > > (a) Create bonding master > > modprobe bonding miimon=50 > (b) Create macvlan bridge on eth2 > > ip link add link eth2 dev mvl0 address aa:0:0:0:0:01 \ > type macvlan > (c) Now try adding eth2 into the bond > > echo +eth2 > /sys/class/net/bond0/bonding/slaves > <crash> > > Bonding does lots of things before checking if the device enslaved is > busy or not. > > In this case when the notifier call-chain sends notifications, the > bond_netdev_event() assumes that the rx_handler /rx_handler_data is > registered while the bond_enslave() hasn't progressed far enough to > register rx_handler for the new slave. > > This patch adds a rx_handler check that can be performed right at the > beginning of the enslave code to avoid getting into this situation. > > Signed-off-by: Mahesh Bandewar <mahe...@google.com> Applied and queued up for -stable, thanks.
