diff options
| author | nikolay@redhat.com <nikolay@redhat.com> | 2013-02-18 08:59:03 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-19 06:51:08 +0100 |
| commit | e0809dbc47dea83eba7a9abb70e87470904d4372 (patch) | |
| tree | 210276bba9031e3df771084b87aacf5bfe4e0462 /drivers/net/bonding | |
| parent | bonding: Fix race condition between bond_enslave() and bond_3ad_update_lacp_r... (diff) | |
| download | linux-e0809dbc47dea83eba7a9abb70e87470904d4372.tar.xz linux-e0809dbc47dea83eba7a9abb70e87470904d4372.zip | |
bonding: Fix initialize after use for 3ad machine state spinlock
The 3ad machine state spinlock can be used before it is inititialized
while doing bond_enslave() (and the port is being initialized) since
port->slave is set before the lock is prepared, thus causing soft
lock-ups and a multitude of other nasty bugs.
[ Rename __initialize_port_locks() variable name to 'slave' -DaveM ]
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bonding')
| -rw-r--r-- | drivers/net/bonding/bond_3ad.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c index 0e45b400b6fc..fc58d118d844 100644 --- a/drivers/net/bonding/bond_3ad.c +++ b/drivers/net/bonding/bond_3ad.c @@ -389,13 +389,13 @@ static u8 __get_duplex(struct port *port) /** * __initialize_port_locks - initialize a port's STATE machine spinlock - * @port: the port we're looking at + * @port: the slave of the port we're looking at * */ -static inline void __initialize_port_locks(struct port *port) +static inline void __initialize_port_locks(struct slave *slave) { // make sure it isn't called twice - spin_lock_init(&(SLAVE_AD_INFO(port->slave).state_machine_lock)); + spin_lock_init(&(SLAVE_AD_INFO(slave).state_machine_lock)); } //conversions @@ -1910,6 +1910,7 @@ int bond_3ad_bind_slave(struct slave *slave) ad_initialize_port(port, bond->params.lacp_fast); + __initialize_port_locks(slave); port->slave = slave; port->actor_port_number = SLAVE_AD_INFO(slave).id; // key is determined according to the link speed, duplex and user key(which is yet not supported) @@ -1932,8 +1933,6 @@ int bond_3ad_bind_slave(struct slave *slave) port->next_port_in_aggregator = NULL; __disable_port(port); - __initialize_port_locks(port); - // aggregator initialization aggregator = &(SLAVE_AD_INFO(slave).aggregator); |