From 5af47b2ff124fdad9ba84baeb9f7eeebeb227b43 Mon Sep 17 00:00:00 2001 From: Jay Vosburgh Date: Mon, 9 Jan 2006 12:14:00 -0800 Subject: [PATCH] [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 --- drivers/net/bonding/bond_alb.c | 4 ++-- drivers/net/bonding/bonding.h | 4 ++-- 2 files changed, 4 insertions(+), 4 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 */ diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h index f20bb85c1ea5..3dd78d048c3e 100644 --- a/drivers/net/bonding/bonding.h +++ b/drivers/net/bonding/bonding.h @@ -22,8 +22,8 @@ #include "bond_3ad.h" #include "bond_alb.h" -#define DRV_VERSION "3.0.0" -#define DRV_RELDATE "November 8, 2005" +#define DRV_VERSION "3.0.1" +#define DRV_RELDATE "January 9, 2006" #define DRV_NAME "bonding" #define DRV_DESCRIPTION "Ethernet Channel Bonding Driver" -- 2.30.2