tree f542a207e79b8d9fda9edf98f384d49ca87db126
parent 76c455decbbad31de21c727edb184a963f42b40b
author Jiri Pirko <jiri@resnulli.us> 1370696454 +0200
committer David S. Miller <davem@davemloft.net> 1371023787 -0700

team: move add to port list before port enablement

team_port_enable() adds port to port_hashlist. Reader sees port
in team_get_port_by_index_rcu() and returns it, but
team_get_first_port_txable_rcu() tries to go through port_list, where the
port is not inserted yet -> NULL pointer dereference.
Fix this by reordering port_list and port_hashlist insertion.
Panic is easily triggeable when txing packets and adding/removing port
in a loop.

Introduced by commit 3d249d4c "net: introduce ethernet teaming device"

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>