[PATCH] bonding: UPDATED hash-table corruption in bond_alb.c

	I believe I see the race Michael refers to (tlb_choose_channel
may set head, which tlb_init_slave clears), although I was not able to
reproduce it.  I have updated his patch for the current netdev-2.6.git
tree and added a version update.  His original comment follows:

Our systems have been crashing during testing of PCI HotPlug
support in the various networking components.  We've faulted in
the bonding driver due to a bug in bond_alb.c:tlb_clear_slave()

In that routine, the last modification to the TLB hash table is
made without protection of the lock, allowing a race that can lead
tlb_choose_channel() to select an invalid table element.

	-J

Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index 854ddfb90da1..f2a63186ae05 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -169,9 +169,9 @@ static void tlb_clear_slave(struct bonding *bond, struct slave *slave, int save_
                 index = next_index;
         }
 
-        _unlock_tx_hashtbl(bond);
-
         tlb_init_slave(slave);
+
+        _unlock_tx_hashtbl(bond);
 }
 
 /* Must be called before starting the monitor timer */