orinoco driver causes lots of lockdep spew

From: Dave Jones
Date: Wed Aug 02 2006 - 17:57:35 EST

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Wow. Nearly 400 lines of debug spew, from a simple 'ifup eth1'.

Dave

ADDRCONF(NETDEV_UP): eth1: link is not ready
eth1: New link status: Disconnected (0002)

======================================================
[ INFO: hard-safe -> hard-unsafe lock order detected ]
------------------------------------------------------
events/0/5 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
(af_callback_keys + sk->sk_family){-.--}, at: [<ffffffff802136b1>] sock_def_readable+0x19/0x6f

and this task is already holding:
(&priv->lock){++..}, at: [<ffffffff8824f70e>] orinoco_send_wevents+0x28/0x8b [orinoco]
which would create a new lock dependency:
(&priv->lock){++..} -> (af_callback_keys + sk->sk_family){-.--}

but this new dependency connects a hard-irq-safe lock:
(&priv->lock){++..}
... which became hard-irq-safe at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff8824f7be>] orinoco_interrupt+0x4d/0xf49 [orinoco]
[<ffffffff8021151f>] handle_IRQ_event+0x2b/0x64
[<ffffffff802c0987>] __do_IRQ+0xae/0x114
[<ffffffff8026fca8>] do_IRQ+0xf7/0x107
[<ffffffff802609c4>] common_interrupt+0x64/0x65

to a hard-irq-unsafe lock:
(af_callback_keys + sk->sk_family){-.--}
... which became hard-irq-unsafe at:
... [<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267867>] _write_lock_bh+0x29/0x36
[<ffffffff80433960>] netlink_release+0x139/0x2ca
[<ffffffff80257903>] sock_release+0x19/0x9b
[<ffffffff80257b13>] sock_close+0x33/0x3a
[<ffffffff802130ee>] __fput+0xc6/0x1a8
[<ffffffff8022effe>] fput+0x13/0x16
[<ffffffff80225383>] filp_close+0x64/0x70
[<ffffffff8021eecc>] sys_close+0x93/0xb0
[<ffffffff8026048d>] system_call+0x7d/0x83

other info that might help us debug this:

1 lock held by events/0/5:
#0: (&priv->lock){++..}, at: [<ffffffff8824f70e>] orinoco_send_wevents+0x28/0x8b [orinoco]

the hard-irq-safe lock's dependencies:
-> (&priv->lock){++..} ops: 0 {
initial-use at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267a3e>] _spin_lock_irq+0x2a/0x38
[<ffffffff8824f102>] orinoco_init+0x934/0x966 [orinoco]
[<ffffffff8041e762>] register_netdevice+0xe6/0x375
[<ffffffff8041ea4b>] register_netdev+0x5a/0x69
[<ffffffff8826155f>] orinoco_cs_probe+0x3d7/0x475 [orinoco_cs]
[<ffffffff803daa02>] pcmcia_device_probe+0x7f/0x124
[<ffffffff803b5e74>] driver_probe_device+0x5b/0xb1
[<ffffffff803b5fde>] __driver_attach+0x88/0xdb
[<ffffffff803b5826>] bus_for_each_dev+0x48/0x7a
[<ffffffff803b5d9e>] driver_attach+0x1b/0x1e
[<ffffffff803b543e>] bus_add_driver+0x88/0x138
[<ffffffff803b6289>] driver_register+0x8e/0x93
[<ffffffff803da89b>] pcmcia_register_driver+0xd0/0xda
[<ffffffff880a9024>] 0xffffffff880a9024
[<ffffffff802af420>] sys_init_module+0x16f2/0x18b7
[<ffffffff8026048d>] system_call+0x7d/0x83
in-hardirq-W at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff8824f7be>] orinoco_interrupt+0x4d/0xf49 [orinoco]
[<ffffffff8021151f>] handle_IRQ_event+0x2b/0x64
[<ffffffff802c0987>] __do_IRQ+0xae/0x114
[<ffffffff8026fca8>] do_IRQ+0xf7/0x107
[<ffffffff802609c4>] common_interrupt+0x64/0x65
in-softirq-W at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff8824f7be>] orinoco_interrupt+0x4d/0xf49 [orinoco]
[<ffffffff8021151f>] handle_IRQ_event+0x2b/0x64
[<ffffffff802c0987>] __do_IRQ+0xae/0x114
[<ffffffff8026fca8>] do_IRQ+0xf7/0x107
[<ffffffff802609c4>] common_interrupt+0x64/0x65
[<ffffffff8028ebce>] scheduler_tick+0xc1/0x362
[<ffffffff80261739>] call_softirq+0x1d/0x28
[<ffffffff80295edb>] irq_exit+0x56/0x59
[<ffffffff8027a67f>] smp_apic_timer_interrupt+0x5c/0x62
[<ffffffff802610ad>] apic_timer_interrupt+0x69/0x70
}
... key at: [<ffffffff8825fd80>] __key.22351+0x0/0xffffffffffff27fa [orinoco]
-> (&cwq->lock){++..} ops: 0 {
initial-use at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff802a0314>] __queue_work+0x17/0x5e
[<ffffffff802a03de>] queue_work+0x4d/0x57
[<ffffffff8029fdda>] call_usermodehelper_keys+0x119/0x137
[<ffffffff8025af79>] kobject_uevent+0x3e5/0x42e
[<ffffffff803b6ebf>] class_device_add+0x314/0x471
[<ffffffff803b7034>] class_device_register+0x18/0x1d
[<ffffffff803b7130>] class_device_create+0xf7/0x129
[<ffffffff8097f2ed>] vtconsole_class_init+0x74/0xbb
[<ffffffff8026d7fc>] init+0x1fc/0x3cd
[<ffffffff802613dd>] child_rip+0x7/0x12
in-hardirq-W at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff802a0314>] __queue_work+0x17/0x5e
[<ffffffff802a03de>] queue_work+0x4d/0x57
[<ffffffff8033c786>] kblockd_schedule_work+0x15/0x18
[<ffffffff8034493b>] __cfq_slice_expired+0x63/0xe6
[<ffffffff80253352>] cfq_completed_request+0x116/0x154
[<ffffffff8033bb82>] elv_completed_request+0x38/0x85
[<ffffffff8033cca7>] __blk_put_request+0x35/0x9f
[<ffffffff8033cdfb>] end_that_request_last+0xea/0xf4
[<ffffffff8020b10a>] ide_end_request+0xf2/0x111
[<ffffffff8023f4a7>] ide_dma_intr+0x70/0xb5
[<ffffffff8020dcd6>] ide_intr+0x169/0x1df
[<ffffffff8021151f>] handle_IRQ_event+0x2b/0x64
[<ffffffff802c0987>] __do_IRQ+0xae/0x114
[<ffffffff8026fca8>] do_IRQ+0xf7/0x107
[<ffffffff802609c4>] common_interrupt+0x64/0x65
in-softirq-W at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff802a0314>] __queue_work+0x17/0x5e
[<ffffffff802a03de>] queue_work+0x4d/0x57
[<ffffffff802a03fd>] schedule_work+0x15/0x18
[<ffffffff803639bb>] cursor_timer_handler+0x1b/0x38
[<ffffffff8029a391>] run_timer_softirq+0x14b/0x1d5
[<ffffffff80212a1f>] __do_softirq+0x67/0xf5
[<ffffffff80261739>] call_softirq+0x1d/0x28
[<ffffffff80295edb>] irq_exit+0x56/0x59
[<ffffffff8027a67f>] smp_apic_timer_interrupt+0x5c/0x62
[<ffffffff802610ad>] apic_timer_interrupt+0x69/0x70
}
... key at: [<ffffffff806c47a0>] __key.10352+0x0/0x8
-> (&q->lock){++..} ops: 0 {
initial-use at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267a3e>] _spin_lock_irq+0x2a/0x38
[<ffffffff80265123>] wait_for_completion+0x2f/0xb3
[<ffffffff802a34d4>] keventd_create_kthread+0x35/0x6a
[<ffffffff802a35d3>] kthread_create+0xca/0x153
[<ffffffff8028e085>] migration_call+0x60/0x44f
[<ffffffff80975115>] migration_init+0x27/0x4f
[<ffffffff8026d669>] init+0x69/0x3cd
[<ffffffff802613dd>] child_rip+0x7/0x12
in-hardirq-W at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff80230689>] __wake_up+0x21/0x50
[<ffffffff8038719b>] acpi_ec_gpe_handler+0x96/0xdb
[<ffffffff803734f2>] acpi_ev_gpe_dispatch+0x6e/0x160
[<ffffffff80373876>] acpi_ev_gpe_detect+0xae/0xff
[<ffffffff80371cf0>] acpi_ev_sci_xrupt_handler+0x19/0x22
[<ffffffff8036c543>] acpi_irq+0x10/0x1b
[<ffffffff8021151f>] handle_IRQ_event+0x2b/0x64
[<ffffffff802c0987>] __do_IRQ+0xae/0x114
[<ffffffff8026fca8>] do_IRQ+0xf7/0x107
[<ffffffff802609c4>] common_interrupt+0x64/0x65
in-softirq-W at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff8028d434>] complete+0x1b/0x4c
[<ffffffff802a12dc>] wakeme_after_rcu+0xc/0xf
[<ffffffff802a1531>] __rcu_process_callbacks+0x154/0x1d9
[<ffffffff802a15d8>] rcu_process_callbacks+0x22/0x44
[<ffffffff80296014>] tasklet_action+0x6c/0xc5
[<ffffffff80212a1f>] __do_softirq+0x67/0xf5
[<ffffffff80261739>] call_softirq+0x1d/0x28
[<ffffffff80295edb>] irq_exit+0x56/0x59
[<ffffffff8027a67f>] smp_apic_timer_interrupt+0x5c/0x62
[<ffffffff802610ad>] apic_timer_interrupt+0x69/0x70
}
... key at: [<ffffffff806c4dd8>] __key.13972+0x0/0x8
-> (&rq->rq_lock_key){++..} ops: 0 {
initial-use at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff8028dd54>] init_idle+0x98/0xc7
[<ffffffff8097531d>] sched_init+0x1b8/0x1be
[<ffffffff809646e8>] start_kernel+0x7a/0x24c
[<ffffffff8096428a>] _sinittext+0x28a/0x292
[<ffffffffffffffff>] 0xffffffffffffffff
in-hardirq-W at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff802677ca>] _spin_lock+0x24/0x31
[<ffffffff8028eb81>] scheduler_tick+0x74/0x362
[<ffffffff8029abe0>] update_process_times+0x67/0x79
[<ffffffff80279f02>] smp_local_timer_interrupt+0x2a/0x50
[<ffffffff80271526>] main_timer_handler+0x202/0x3a5
[<ffffffff802716dd>] timer_interrupt+0x14/0x2a
[<ffffffff8021151f>] handle_IRQ_event+0x2b/0x64
[<ffffffff802c0987>] __do_IRQ+0xae/0x114
[<ffffffff8026fca8>] do_IRQ+0xf7/0x107
[<ffffffff802609c4>] common_interrupt+0x64/0x65
in-softirq-W at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff802677ca>] _spin_lock+0x24/0x31
[<ffffffff8028de0c>] task_rq_lock+0x41/0x74
[<ffffffff802489a3>] try_to_wake_up+0x26/0x418
[<ffffffff8028e022>] wake_up_process+0xf/0x12
[<ffffffff8029a593>] process_timeout+0x8/0xb
[<ffffffff8029a391>] run_timer_softirq+0x14b/0x1d5
[<ffffffff80212a1f>] __do_softirq+0x67/0xf5
[<ffffffff80261739>] call_softirq+0x1d/0x28
[<ffffffff80295edb>] irq_exit+0x56/0x59
[<ffffffff8027a67f>] smp_apic_timer_interrupt+0x5c/0x62
[<ffffffff802610ad>] apic_timer_interrupt+0x69/0x70
}
... key at: [<ffff810002618700>] 0xffff810002618700
... acquired at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff802677ca>] _spin_lock+0x24/0x31
[<ffffffff8028de0c>] task_rq_lock+0x41/0x74
[<ffffffff802489a3>] try_to_wake_up+0x26/0x418
[<ffffffff8028e010>] default_wake_function+0xc/0xf
[<ffffffff8028c310>] __wake_up_common+0x3d/0x68
[<ffffffff8028d450>] complete+0x37/0x4c
[<ffffffff80235411>] kthread+0xda/0x136
[<ffffffff802613dd>] child_rip+0x7/0x12

... acquired at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff80230689>] __wake_up+0x21/0x50
[<ffffffff802a0347>] __queue_work+0x4a/0x5e
[<ffffffff802a03de>] queue_work+0x4d/0x57
[<ffffffff8029fdda>] call_usermodehelper_keys+0x119/0x137
[<ffffffff8025af79>] kobject_uevent+0x3e5/0x42e
[<ffffffff803b6ebf>] class_device_add+0x314/0x471
[<ffffffff803b7034>] class_device_register+0x18/0x1d
[<ffffffff803b7130>] class_device_create+0xf7/0x129
[<ffffffff8097f2ed>] vtconsole_class_init+0x74/0xbb
[<ffffffff8026d7fc>] init+0x1fc/0x3cd
[<ffffffff802613dd>] child_rip+0x7/0x12

... acquired at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff802a0314>] __queue_work+0x17/0x5e
[<ffffffff802a03de>] queue_work+0x4d/0x57
[<ffffffff802a03fd>] schedule_work+0x15/0x18
[<ffffffff8824fc31>] orinoco_interrupt+0x4c0/0xf49 [orinoco]
[<ffffffff8021151f>] handle_IRQ_event+0x2b/0x64
[<ffffffff802c0987>] __do_IRQ+0xae/0x114
[<ffffffff8026fca8>] do_IRQ+0xf7/0x107
[<ffffffff802609c4>] common_interrupt+0x64/0x65

-> (&list->lock){....} ops: 0 {
initial-use at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff80258024>] skb_queue_tail+0x1e/0x49
[<ffffffff80259ac6>] netlink_broadcast+0x211/0x2e2
[<ffffffff8025af3f>] kobject_uevent+0x3ab/0x42e
[<ffffffff803b6ebf>] class_device_add+0x314/0x471
[<ffffffff803b7034>] class_device_register+0x18/0x1d
[<ffffffff803b7130>] class_device_create+0xf7/0x129
[<ffffffff803ff248>] evdev_connect+0xfc/0x121
[<ffffffff803fd73a>] input_register_device+0x1e8/0x26d
[<ffffffff80400ac5>] atkbd_connect+0x23d/0x26d
[<ffffffff803f8861>] serio_connect_driver+0x2c/0x41
[<ffffffff803f8890>] serio_driver_probe+0x1a/0x1d
[<ffffffff803b5e74>] driver_probe_device+0x5b/0xb1
[<ffffffff803b5fde>] __driver_attach+0x88/0xdb
[<ffffffff803b5826>] bus_for_each_dev+0x48/0x7a
[<ffffffff803b5d9e>] driver_attach+0x1b/0x1e
[<ffffffff803b543e>] bus_add_driver+0x88/0x138
[<ffffffff803b6289>] driver_register+0x8e/0x93
[<ffffffff803f942c>] serio_thread+0x14c/0x2a9
[<ffffffff80235436>] kthread+0xff/0x136
[<ffffffff802613dd>] child_rip+0x7/0x12
}
... key at: [<ffffffff80919fb0>] __key.17572+0x0/0x8
... acquired at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267ba2>] _spin_lock_irqsave+0x2b/0x3c
[<ffffffff80258024>] skb_queue_tail+0x1e/0x49
[<ffffffff80259ac6>] netlink_broadcast+0x211/0x2e2
[<ffffffff804287ea>] wireless_send_event+0x2ff/0x317
[<ffffffff8824f731>] orinoco_send_wevents+0x4b/0x8b [orinoco]
[<ffffffff8024f99b>] run_workqueue+0xa7/0xfb
[<ffffffff8024c17f>] worker_thread+0xee/0x122
[<ffffffff80235436>] kthread+0xff/0x136
[<ffffffff802613dd>] child_rip+0x7/0x12

the hard-irq-unsafe lock's dependencies:
-> (af_callback_keys + sk->sk_family){-.--} ops: 0 {
initial-use at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267947>] _read_lock+0x27/0x34
[<ffffffff802136b0>] sock_def_readable+0x18/0x6f
[<ffffffff80259ad6>] netlink_broadcast+0x221/0x2e2
[<ffffffff8025af3f>] kobject_uevent+0x3ab/0x42e
[<ffffffff803b6ebf>] class_device_add+0x314/0x471
[<ffffffff803b7034>] class_device_register+0x18/0x1d
[<ffffffff803b7130>] class_device_create+0xf7/0x129
[<ffffffff803ff248>] evdev_connect+0xfc/0x121
[<ffffffff803fd73a>] input_register_device+0x1e8/0x26d
[<ffffffff80400ac5>] atkbd_connect+0x23d/0x26d
[<ffffffff803f8861>] serio_connect_driver+0x2c/0x41
[<ffffffff803f8890>] serio_driver_probe+0x1a/0x1d
[<ffffffff803b5e74>] driver_probe_device+0x5b/0xb1
[<ffffffff803b5fde>] __driver_attach+0x88/0xdb
[<ffffffff803b5826>] bus_for_each_dev+0x48/0x7a
[<ffffffff803b5d9e>] driver_attach+0x1b/0x1e
[<ffffffff803b543e>] bus_add_driver+0x88/0x138
[<ffffffff803b6289>] driver_register+0x8e/0x93
[<ffffffff803f942c>] serio_thread+0x14c/0x2a9
[<ffffffff80235436>] kthread+0xff/0x136
[<ffffffff802613dd>] child_rip+0x7/0x12
hardirq-on-W at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267867>] _write_lock_bh+0x29/0x36
[<ffffffff80433960>] netlink_release+0x139/0x2ca
[<ffffffff80257903>] sock_release+0x19/0x9b
[<ffffffff80257b13>] sock_close+0x33/0x3a
[<ffffffff802130ee>] __fput+0xc6/0x1a8
[<ffffffff8022effe>] fput+0x13/0x16
[<ffffffff80225383>] filp_close+0x64/0x70
[<ffffffff8021eecc>] sys_close+0x93/0xb0
[<ffffffff8026048d>] system_call+0x7d/0x83
softirq-on-R at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267947>] _read_lock+0x27/0x34
[<ffffffff802136b0>] sock_def_readable+0x18/0x6f
[<ffffffff80259ad6>] netlink_broadcast+0x221/0x2e2
[<ffffffff8025af3f>] kobject_uevent+0x3ab/0x42e
[<ffffffff803b6ebf>] class_device_add+0x314/0x471
[<ffffffff803b7034>] class_device_register+0x18/0x1d
[<ffffffff803b7130>] class_device_create+0xf7/0x129
[<ffffffff803ff248>] evdev_connect+0xfc/0x121
[<ffffffff803fd73a>] input_register_device+0x1e8/0x26d
[<ffffffff80400ac5>] atkbd_connect+0x23d/0x26d
[<ffffffff803f8861>] serio_connect_driver+0x2c/0x41
[<ffffffff803f8890>] serio_driver_probe+0x1a/0x1d
[<ffffffff803b5e74>] driver_probe_device+0x5b/0xb1
[<ffffffff803b5fde>] __driver_attach+0x88/0xdb
[<ffffffff803b5826>] bus_for_each_dev+0x48/0x7a
[<ffffffff803b5d9e>] driver_attach+0x1b/0x1e
[<ffffffff803b543e>] bus_add_driver+0x88/0x138
[<ffffffff803b6289>] driver_register+0x8e/0x93
[<ffffffff803f942c>] serio_thread+0x14c/0x2a9
[<ffffffff80235436>] kthread+0xff/0x136
[<ffffffff802613dd>] child_rip+0x7/0x12
hardirq-on-R at:
[<ffffffff802a8e62>] lock_acquire+0x4a/0x69
[<ffffffff80267947>] _read_lock+0x27/0x34
[<ffffffff802136b0>] sock_def_readable+0x18/0x6f
[<ffffffff80259ad6>] netlink_broadcast+0x221/0x2e2
[<ffffffff8025af3f>] kobject_uevent+0x3ab/0x42e
[<ffffffff803b6ebf>] class_device_add+0x314/0x471
[<ffffffff803b7034>] class_device_register+0x18/0x1d
[<ffffffff803b7130>] class_device_create+0xf7/0x129
[<ffffffff803ff248>] evdev_connect+0xfc/0x121
[<ffffffff803fd73a>] input_register_device+0x1e8/0x26d
[<ffffffff80400ac5>] atkbd_connect+0x23d/0x26d
[<ffffffff803f8861>] serio_connect_driver+0x2c/0x41
[<ffffffff803f8890>] serio_driver_probe+0x1a/0x1d
[<ffffffff803b5e74>] driver_probe_device+0x5b/0xb1
[<ffffffff803b5fde>] __driver_attach+0x88/0xdb
[<ffffffff803b5826>] bus_for_each_dev+0x48/0x7a
[<ffffffff803b5d9e>] driver_attach+0x1b/0x1e
[<ffffffff803b543e>] bus_add_driver+0x88/0x138
[<ffffffff803b6289>] driver_register+0x8e/0x93
[<ffffffff803f942c>] serio_thread+0x14c/0x2a9
[<ffffffff80235436>] kthread+0xff/0x136
[<ffffffff802613dd>] child_rip+0x7/0x12
}
... key at: [<ffffffff8091a280>] af_callback_keys+0x80/0x100

stack backtrace:

Call Trace:
[<ffffffff8026e7fd>] show_trace+0xae/0x30e
[<ffffffff8026ea72>] dump_stack+0x15/0x17
[<ffffffff802a7dc1>] check_usage+0x27d/0x28e
[<ffffffff802a86e6>] __lock_acquire+0x878/0xa54
[<ffffffff802a8e63>] lock_acquire+0x4b/0x69
[<ffffffff80267948>] _read_lock+0x28/0x34
[<ffffffff802136b1>] sock_def_readable+0x19/0x6f
[<ffffffff80259ad7>] netlink_broadcast+0x222/0x2e2
[<ffffffff804287eb>] wireless_send_event+0x300/0x317
[<ffffffff8824f732>] :orinoco:orinoco_send_wevents+0x4c/0x8b
[<ffffffff8024f99c>] run_workqueue+0xa8/0xfb
[<ffffffff8024c180>] worker_thread+0xef/0x122
[<ffffffff80235437>] kthread+0x100/0x136
[<ffffffff802613de>] child_rip+0x8/0x12
DWARF2 unwinder stuck at child_rip+0x8/0x12
Leftover inexact backtrace:
[<ffffffff80267ab2>] _spin_unlock_irq+0x2b/0x31
[<ffffffff80260a1b>] restore_args+0x0/0x30
[<ffffffff80235337>] kthread+0x0/0x136
[<ffffffff802613d6>] child_rip+0x0/0x12

eth1: New link status: Connected (0001)
ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready

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orinoco driver causes *lots* of lockdep spew

orinoco driver causes lots of lockdep spew