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| author | Adrian Drzewiecki <z@drze.net> | 2006-02-15 01:47:48 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-02-15 01:47:48 -0800 |
| commit | 78872ccb68335b14f0d1ac7338ecfcbf1cba1df4 (patch) | |
| tree | 20f39c4cddd8f4d461977dc0ed334e61b6c1d431 /net/bridge | |
| parent | ee68cea2c26b7a8222f9020f54d22c6067011e8b (diff) | |
| download | linux-78872ccb68335b14f0d1ac7338ecfcbf1cba1df4.tar.gz linux-78872ccb68335b14f0d1ac7338ecfcbf1cba1df4.tar.bz2 linux-78872ccb68335b14f0d1ac7338ecfcbf1cba1df4.zip | |
[BRIDGE]: Fix deadlock in br_stp_disable_bridge
Looks like somebody forgot to use the _bh spin_lock variant. We ran into a
deadlock where br->hello_timer expired while br_stp_disable_br() walked
br->port_list.
Signed-off-by: Adrian Drzewiecki <z@drze.net>
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
| -rw-r--r-- | net/bridge/br_stp_if.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c index cc047f7fb6ef..35cf3a074087 100644 --- a/net/bridge/br_stp_if.c +++ b/net/bridge/br_stp_if.c @@ -67,7 +67,7 @@ void br_stp_disable_bridge(struct net_bridge *br) { struct net_bridge_port *p; - spin_lock(&br->lock); + spin_lock_bh(&br->lock); list_for_each_entry(p, &br->port_list, list) { if (p->state != BR_STATE_DISABLED) br_stp_disable_port(p); @@ -76,7 +76,7 @@ void br_stp_disable_bridge(struct net_bridge *br) br->topology_change = 0; br->topology_change_detected = 0; - spin_unlock(&br->lock); + spin_unlock_bh(&br->lock); del_timer_sync(&br->hello_timer); del_timer_sync(&br->topology_change_timer); |