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Message-ID: <c4e36d110901030404n377ac2bbg2ec74c5ddad35e4@mail.gmail.com>
Date: Sat, 3 Jan 2009 13:04:54 +0100
From: "Zdenek Kabelac" <zdenek.kabelac@gmail.com>
To: "Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Deadlock after info soft-safe -> soft-unsafe lock order detected
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Hi

With todays kernel build I've got this trace which followed deadlock of my box.
(T61, 2GB, inel graphics)

glxgears:3427 map pfn expected mapping type write-back for
e2800000-e337c000, got uncached-minus
glxgears:3427 freeing invalid memtype e2800000-e337c000

======================================================
[ INFO: soft-safe -> soft-unsafe lock order detected ]
2.6.28 #102
------------------------------------------------------
firefox/3654 [HC0[0]:SC0[1]:HE1:SE0] is trying to acquire:
 (&fbc->lock){--..}, at: [<ffffffff803aa578>] __percpu_counter_add+0x58/0x80

and this task is already holding:
 (slock-AF_INET){-+..}, at: [<ffffffff804dd578>] tcp_close+0x198/0x4d0
which would create a new lock dependency:
 (slock-AF_INET){-+..} -> (&fbc->lock){--..}

but this new dependency connects a soft-irq-safe lock:
 (slock-AF_INET){-+..}
... which became soft-irq-safe at:
  [<ffffffffffffffff>] 0xffffffffffffffff

to a soft-irq-unsafe lock:
 (&fbc->lock){--..}
... which became soft-irq-unsafe at:
...  [<ffffffff8026f4ec>] __lock_acquire+0x3ac/0x1280
  [<ffffffff80270451>] lock_acquire+0x91/0xc0
  [<ffffffff805376a1>] _spin_lock+0x31/0x70
  [<ffffffff803aa578>] __percpu_counter_add+0x58/0x80
  [<ffffffff802d9aae>] get_empty_filp+0x7e/0x1a0
  [<ffffffff802e46d6>] path_lookup_open+0x36/0xd0
  [<ffffffff802e5598>] do_filp_open+0xb8/0x930
  [<ffffffff802d6548>] do_sys_open+0x78/0x100
  [<ffffffff802d65fb>] sys_open+0x1b/0x20
  [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
  [<ffffffffffffffff>] 0xffffffffffffffff

other info that might help us debug this:

1 lock held by firefox/3654:
 #0:  (slock-AF_INET){-+..}, at: [<ffffffff804dd578>] tcp_close+0x198/0x4d0

the soft-irq-safe lock's dependencies:
-> (slock-AF_INET){-+..} ops: 15574 {
   initial-use  at:
                                       [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                       [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                       [<ffffffff80537716>]
_spin_lock_bh+0x36/0x70
                                       [<ffffffff804a1b85>]
lock_sock_nested+0x45/0x120
                                       [<ffffffff804dd3fe>] tcp_close+0x1e/0x4d0
                                       [<ffffffff804fe1c2>]
inet_release+0x42/0x70
                                       [<ffffffff8049ef54>]
sock_release+0x24/0x90
                                       [<ffffffff8049efd2>] sock_close+0x12/0x30
                                       [<ffffffff802d9d45>] __fput+0xd5/0x1f0
                                       [<ffffffff802d9e7d>] fput+0x1d/0x30
                                       [<ffffffff802d637b>] filp_close+0x5b/0x90
                                       [<ffffffff802d6469>] sys_close+0xb9/0x120
                                       [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                       [<ffffffffffffffff>] 0xffffffffffffffff
   in-softirq-W at:
                                       [<ffffffffffffffff>] 0xffffffffffffffff
   hardirq-on-W at:
                                       [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                       [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                       [<ffffffff80537716>]
_spin_lock_bh+0x36/0x70
                                       [<ffffffff804a1b85>]
lock_sock_nested+0x45/0x120
                                       [<ffffffff804dd3fe>] tcp_close+0x1e/0x4d0
                                       [<ffffffff804fe1c2>]
inet_release+0x42/0x70
                                       [<ffffffff8049ef54>]
sock_release+0x24/0x90
                                       [<ffffffff8049efd2>] sock_close+0x12/0x30
                                       [<ffffffff802d9d45>] __fput+0xd5/0x1f0
                                       [<ffffffff802d9e7d>] fput+0x1d/0x30
                                       [<ffffffff802d637b>] filp_close+0x5b/0x90
                                       [<ffffffff802d6469>] sys_close+0xb9/0x120
                                       [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                       [<ffffffffffffffff>] 0xffffffffffffffff
 }
 ... key      at: [<ffffffff810400b0>] af_family_slock_keys+0x10/0x120
 -> (&list->lock){-+..} ops: 17288 {
    initial-use  at:
                                         [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                         [<ffffffff804a5476>]
skb_queue_tail+0x26/0x60
                                         [<ffffffff804c3f9b>]
netlink_broadcast+0x30b/0x480
                                         [<ffffffff8039f22a>]
kobject_uevent_env+0x3ba/0x5c0
                                         [<ffffffff8039f43b>]
kobject_uevent+0xb/0x10
                                         [<ffffffff80279cea>]
mod_sysfs_setup+0xba/0xd0
                                         [<ffffffff8027b4f1>]
load_module+0x17f1/0x1bf0
                                         [<ffffffff8027b95f>]
sys_init_module+0x6f/0x1e0
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    in-softirq-W at:
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    hardirq-on-W at:
                                         [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff80537716>]
_spin_lock_bh+0x36/0x70
                                         [<ffffffff804f3c28>]
udp_poll+0x88/0x170
                                         [<ffffffff8049db58>]
sock_poll+0x18/0x20
                                         [<ffffffff802e832c>]
do_sys_poll+0x21c/0x4d0
                                         [<ffffffff802e87d7>]
sys_poll+0x77/0x110
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
  }
  ... key      at: [<ffffffff8103ff30>] __key.24203+0x0/0x8
 ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

 -> (&q->lock){++..} ops: 86318651 {
    initial-use  at:
                                         [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff8053778f>]
_spin_lock_irq+0x3f/0x90
                                         [<ffffffff80534b98>]
wait_for_common+0x48/0x1b0
                                         [<ffffffff80534d98>]
wait_for_completion+0x18/0x20
                                         [<ffffffff8025cc79>]
kthread_create+0xa9/0x100
                                         [<ffffffff805315b8>]
migration_call+0x3aa/0x55b
                                         [<ffffffff806f0f01>]
migration_init+0x25/0x5b
                                         [<ffffffff8020903c>] _stext+0x3c/0x170
                                         [<ffffffff806da5c5>]
kernel_init+0x70/0x194
                                         [<ffffffff8020d7ba>] child_rip+0xa/0x20
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    in-hardirq-W at:
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    in-softirq-W at:
                                         [<ffffffffffffffff>] 0xffffffffffffffff
  }
  ... key      at: [<ffffffff80967be8>] __key.16629+0x0/0x18
  -> (&rq->lock){++..} ops: 7667315 {
     initial-use  at:
                                           [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                           [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                           [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                           [<ffffffff8023a746>]
rq_attach_root+0x26/0xf0
                                           [<ffffffff806f0d5f>]
sched_init+0x271/0x3ee
                                           [<ffffffff806daafc>]
start_kernel+0x171/0x419
                                           [<ffffffff806da299>]
x86_64_start_reservations+0x99/0xb9
                                           [<ffffffff806da3b4>]
x86_64_start_kernel+0xd8/0xdf
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     in-hardirq-W at:
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     in-softirq-W at:
                                           [<ffffffffffffffff>]
0xffffffffffffffff
   }
   ... key      at: [<ffffffff80922598>] __key.43526+0x0/0x8
   -> (&vec->lock){.+..} ops: 106044 {
      initial-use  at:
                                             [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                             [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                             [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                             [<ffffffff802a6403>]
cpupri_set+0xd3/0x170
                                             [<ffffffff80238b24>]
rq_online_rt+0x44/0x80
                                             [<ffffffff80235d3e>]
set_rq_online+0x5e/0x80
                                             [<ffffffff8023a7bb>]
rq_attach_root+0x9b/0xf0
                                             [<ffffffff806f0d5f>]
sched_init+0x271/0x3ee
                                             [<ffffffff806daafc>]
start_kernel+0x171/0x419
                                             [<ffffffff806da299>]
x86_64_start_reservations+0x99/0xb9
                                             [<ffffffff806da3b4>]
x86_64_start_kernel+0xd8/0xdf
                                             [<ffffffffffffffff>]
0xffffffffffffffff
      in-softirq-W at:
                                             [<ffffffffffffffff>]
0xffffffffffffffff
    }
    ... key      at: [<ffffffff81020d08>] __key.13652+0x0/0x38
   ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffff802a6403>] cpupri_set+0xd3/0x170
   [<ffffffff80238b24>] rq_online_rt+0x44/0x80
   [<ffffffff80235d3e>] set_rq_online+0x5e/0x80
   [<ffffffff8023a7bb>] rq_attach_root+0x9b/0xf0
   [<ffffffff806f0d5f>] sched_init+0x271/0x3ee
   [<ffffffff806daafc>] start_kernel+0x171/0x419
   [<ffffffff806da299>] x86_64_start_reservations+0x99/0xb9
   [<ffffffff806da3b4>] x86_64_start_kernel+0xd8/0xdf
   [<ffffffffffffffff>] 0xffffffffffffffff

   -> (&rt_b->rt_runtime_lock){....} ops: 926 {
      initial-use  at:
                                             [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                             [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                             [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                             [<ffffffff80238f2c>]
enqueue_task_rt+0x1cc/0x240
                                             [<ffffffff80234fd0>]
enqueue_task+0x50/0x60
                                             [<ffffffff802350e2>]
activate_task+0x22/0x30
                                             [<ffffffff80239e18>]
try_to_wake_up+0x248/0x2f0
                                             [<ffffffff80239ef0>]
wake_up_process+0x10/0x20
                                             [<ffffffff8053126d>]
migration_call+0x5f/0x55b
                                             [<ffffffff806f0f1f>]
migration_init+0x43/0x5b
                                             [<ffffffff8020903c>]
_stext+0x3c/0x170
                                             [<ffffffff806da5c5>]
kernel_init+0x70/0x194
                                             [<ffffffff8020d7ba>]
child_rip+0xa/0x20
                                             [<ffffffffffffffff>]
0xffffffffffffffff
    }
    ... key      at: [<ffffffff809225a0>] __key.35059+0x0/0x8
    -> (&cpu_base->lock){++..} ops: 7379273 {
       initial-use  at:
                                               [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                               [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                               [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                               [<ffffffff8026040c>]
lock_hrtimer_base+0x2c/0x60
                                               [<ffffffff802608ba>]
hrtimer_start_range_ns+0x3a/0x1b0
                                               [<ffffffff80238f7f>]
enqueue_task_rt+0x21f/0x240
                                               [<ffffffff80234fd0>]
enqueue_task+0x50/0x60
                                               [<ffffffff802350e2>]
activate_task+0x22/0x30
                                               [<ffffffff80239e18>]
try_to_wake_up+0x248/0x2f0
                                               [<ffffffff80239ef0>]
wake_up_process+0x10/0x20
                                               [<ffffffff8053126d>]
migration_call+0x5f/0x55b
                                               [<ffffffff806f0f1f>]
migration_init+0x43/0x5b
                                               [<ffffffff8020903c>]
_stext+0x3c/0x170
                                               [<ffffffff806da5c5>]
kernel_init+0x70/0x194
                                               [<ffffffff8020d7ba>]
child_rip+0xa/0x20
                                               [<ffffffffffffffff>]
0xffffffffffffffff
       in-hardirq-W at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
       in-softirq-W at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
     }
     ... key      at: [<ffffffff80967c30>] __key.18600+0x0/0x8
    ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffff8026040c>] lock_hrtimer_base+0x2c/0x60
   [<ffffffff802608ba>] hrtimer_start_range_ns+0x3a/0x1b0
   [<ffffffff80238f7f>] enqueue_task_rt+0x21f/0x240
   [<ffffffff80234fd0>] enqueue_task+0x50/0x60
   [<ffffffff802350e2>] activate_task+0x22/0x30
   [<ffffffff80239e18>] try_to_wake_up+0x248/0x2f0
   [<ffffffff80239ef0>] wake_up_process+0x10/0x20
   [<ffffffff8053126d>] migration_call+0x5f/0x55b
   [<ffffffff806f0f1f>] migration_init+0x43/0x5b
   [<ffffffff8020903c>] _stext+0x3c/0x170
   [<ffffffff806da5c5>] kernel_init+0x70/0x194
   [<ffffffff8020d7ba>] child_rip+0xa/0x20
   [<ffffffffffffffff>] 0xffffffffffffffff

    -> (&rt_rq->rt_runtime_lock){++..} ops: 54877 {
       initial-use  at:
                                               [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                               [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                               [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                               [<ffffffff80240eaa>]
update_curr_rt+0x10a/0x180
                                               [<ffffffff8024104f>]
dequeue_task_rt+0x1f/0x70
                                               [<ffffffff80235076>]
dequeue_task+0x96/0xe0
                                               [<ffffffff80235112>]
deactivate_task+0x22/0x30
                                               [<ffffffff80534440>]
thread_return+0x14a/0x6fa
                                               [<ffffffff8023f990>]
migration_thread+0x1e0/0x2d0
                                               [<ffffffff8025c9f9>]
kthread+0x49/0x90
                                               [<ffffffff8020d7ba>]
child_rip+0xa/0x20
                                               [<ffffffffffffffff>]
0xffffffffffffffff
       in-hardirq-W at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
       in-softirq-W at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
     }
     ... key      at: [<ffffffff809225a8>] __key.43508+0x0/0x8
    ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff802381f9>] __enable_runtime+0x39/0x80
   [<ffffffff80238b08>] rq_online_rt+0x28/0x80
   [<ffffffff80235d3e>] set_rq_online+0x5e/0x80
   [<ffffffff805312a9>] migration_call+0x9b/0x55b
   [<ffffffff8053ac85>] notifier_call_chain+0x65/0xa0
   [<ffffffff802618e1>] raw_notifier_call_chain+0x11/0x20
   [<ffffffff8053191c>] _cpu_up+0x101/0x12d
   [<ffffffff805319bc>] cpu_up+0x74/0x7a
   [<ffffffff806da625>] kernel_init+0xd0/0x194
   [<ffffffff8020d7ba>] child_rip+0xa/0x20
   [<ffffffffffffffff>] 0xffffffffffffffff

   ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff80238f2c>] enqueue_task_rt+0x1cc/0x240
   [<ffffffff80234fd0>] enqueue_task+0x50/0x60
   [<ffffffff802350e2>] activate_task+0x22/0x30
   [<ffffffff80239e18>] try_to_wake_up+0x248/0x2f0
   [<ffffffff80239ef0>] wake_up_process+0x10/0x20
   [<ffffffff8053126d>] migration_call+0x5f/0x55b
   [<ffffffff806f0f1f>] migration_init+0x43/0x5b
   [<ffffffff8020903c>] _stext+0x3c/0x170
   [<ffffffff806da5c5>] kernel_init+0x70/0x194
   [<ffffffff8020d7ba>] child_rip+0xa/0x20
   [<ffffffffffffffff>] 0xffffffffffffffff

   ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff80240eaa>] update_curr_rt+0x10a/0x180
   [<ffffffff8024104f>] dequeue_task_rt+0x1f/0x70
   [<ffffffff80235076>] dequeue_task+0x96/0xe0
   [<ffffffff80235112>] deactivate_task+0x22/0x30
   [<ffffffff80534440>] thread_return+0x14a/0x6fa
   [<ffffffff8023f990>] migration_thread+0x1e0/0x2d0
   [<ffffffff8025c9f9>] kthread+0x49/0x90
   [<ffffffff8020d7ba>] child_rip+0xa/0x20
   [<ffffffffffffffff>] 0xffffffffffffffff

   -> (&rq->lock/1){.+..} ops: 54954 {
      initial-use  at:
                                             [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                             [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                             [<ffffffff8053762f>]
_spin_lock_nested+0x2f/0x70
                                             [<ffffffff80239ae2>]
double_rq_lock+0x32/0x90
                                             [<ffffffff8023edef>]
__migrate_task+0x6f/0x120
                                             [<ffffffff8023f85d>]
migration_thread+0xad/0x2d0
                                             [<ffffffff8025c9f9>]
kthread+0x49/0x90
                                             [<ffffffff8020d7ba>]
child_rip+0xa/0x20
                                             [<ffffffffffffffff>]
0xffffffffffffffff
      in-softirq-W at:
                                             [<ffffffffffffffff>]
0xffffffffffffffff
    }
    ... key      at: [<ffffffff80922599>] __key.43526+0x1/0x8
   ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff8053762f>] _spin_lock_nested+0x2f/0x70
   [<ffffffff80239ae2>] double_rq_lock+0x32/0x90
   [<ffffffff8023edef>] __migrate_task+0x6f/0x120
   [<ffffffff8023f85d>] migration_thread+0xad/0x2d0
   [<ffffffff8025c9f9>] kthread+0x49/0x90
   [<ffffffff8020d7ba>] child_rip+0xa/0x20
   [<ffffffffffffffff>] 0xffffffffffffffff

   -> (latency_lock){++..} ops: 1267263 {
      initial-use  at:
                                             [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                             [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                             [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                             [<ffffffff8029c932>]
clear_all_latency_tracing+0x22/0x60
                                             [<ffffffff80243d93>]
copy_process+0xf73/0x13d0
                                             [<ffffffff8024427b>]
do_fork+0x8b/0x440
                                             [<ffffffff8020a433>]
sys_clone+0x23/0x30
                                             [<ffffffff8020cac3>]
stub_clone+0x13/0x20
                                             [<ffffffffffffffff>]
0xffffffffffffffff
      in-hardirq-W at:
                                             [<ffffffffffffffff>]
0xffffffffffffffff
      in-softirq-W at:
                                             [<ffffffffffffffff>]
0xffffffffffffffff
    }
    ... key      at: [<ffffffff806804b8>] latency_lock+0x18/0x40
   ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffff80536ab9>] account_scheduler_latency+0x89/0x390
   [<ffffffff8023db24>] enqueue_task_fair+0x234/0x310
   [<ffffffff80234fd0>] enqueue_task+0x50/0x60
   [<ffffffff802350e2>] activate_task+0x22/0x30
   [<ffffffff80239e18>] try_to_wake_up+0x248/0x2f0
   [<ffffffff80239ecd>] default_wake_function+0xd/0x10
   [<ffffffff8023586a>] __wake_up_common+0x5a/0x90
   [<ffffffff802358b3>] __wake_up_locked+0x13/0x20
   [<ffffffff80309af0>] ep_poll_callback+0x90/0x120
   [<ffffffff8023586a>] __wake_up_common+0x5a/0x90
   [<ffffffff8023677a>] __wake_up_sync+0x4a/0x70
   [<ffffffff804a1dbe>] sock_def_readable+0x3e/0x70
   [<ffffffff80519acd>] unix_stream_sendmsg+0x1ed/0x3b0
   [<ffffffff8049e64a>] sock_aio_write+0x17a/0x190
   [<ffffffff802d8421>] do_sync_write+0xf1/0x140
   [<ffffffff802d8bb9>] vfs_write+0x179/0x190
   [<ffffffff802d8cc0>] sys_write+0x50/0x90
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

  ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff80236934>] task_rq_lock+0x54/0xa0
   [<ffffffff80239c51>] try_to_wake_up+0x81/0x2f0
   [<ffffffff80239ecd>] default_wake_function+0xd/0x10
   [<ffffffff8023586a>] __wake_up_common+0x5a/0x90
   [<ffffffff8023670f>] complete+0x3f/0x60
   [<ffffffff8025c9d7>] kthread+0x27/0x90
   [<ffffffff8020d7ba>] child_rip+0xa/0x20
   [<ffffffffffffffff>] 0xffffffffffffffff

  -> (&ep->lock){....} ops: 4470 {
     initial-use  at:
                                           [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                           [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                           [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                           [<ffffffff8030a93f>]
sys_epoll_ctl+0x41f/0x540
                                           [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                           [<ffffffffffffffff>]
0xffffffffffffffff
   }
   ... key      at: [<ffffffff81023d10>] __key.21125+0x0/0x10
   ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff80236934>] task_rq_lock+0x54/0xa0
   [<ffffffff80239c51>] try_to_wake_up+0x81/0x2f0
   [<ffffffff80239ecd>] default_wake_function+0xd/0x10
   [<ffffffff8023586a>] __wake_up_common+0x5a/0x90
   [<ffffffff802358b3>] __wake_up_locked+0x13/0x20
   [<ffffffff80309af0>] ep_poll_callback+0x90/0x120
   [<ffffffff8023586a>] __wake_up_common+0x5a/0x90
   [<ffffffff8023677a>] __wake_up_sync+0x4a/0x70
   [<ffffffff804a1dbe>] sock_def_readable+0x3e/0x70
   [<ffffffff805198ca>] unix_stream_connect+0x47a/0x490
   [<ffffffff8049f8e8>] sys_connect+0xb8/0xd0
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

  ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffff80309a84>] ep_poll_callback+0x24/0x120
   [<ffffffff8023586a>] __wake_up_common+0x5a/0x90
   [<ffffffff8023677a>] __wake_up_sync+0x4a/0x70
   [<ffffffff804a1dbe>] sock_def_readable+0x3e/0x70
   [<ffffffff805198ca>] unix_stream_connect+0x47a/0x490
   [<ffffffff8049f8e8>] sys_connect+0xb8/0xd0
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

 ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

 -> (tcp_lock){-+..} ops: 5777 {
    initial-use  at:
                                         [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff80537966>]
_write_lock_bh+0x36/0x70
                                         [<ffffffffa0460671>]
tcp_packet+0x61/0x13c0 [nf_conntrack]
                                         [<ffffffffa045bfed>]
nf_conntrack_in+0x30d/0x970 [nf_conntrack]
                                         [<ffffffffa0482566>]
ipv4_conntrack_local+0x56/0x80 [nf_conntrack_ipv4]
                                         [<ffffffff804c7ab7>]
nf_iterate+0x67/0xa0
                                         [<ffffffff804c7bc3>]
nf_hook_slow+0xd3/0x120
                                         [<ffffffff804d379f>]
__ip_local_out+0x9f/0xb0
                                         [<ffffffff804d37c1>]
ip_local_out+0x11/0x30
                                         [<ffffffff804d4054>]
ip_queue_xmit+0x1e4/0x3d0
                                         [<ffffffff804e891b>]
tcp_transmit_skb+0x4cb/0x750
                                         [<ffffffff804ea60c>]
tcp_connect+0x36c/0x470
                                         [<ffffffff804ef3b9>]
tcp_v4_connect+0x429/0x500
                                         [<ffffffff804fd137>]
inet_stream_connect+0x227/0x2c0
                                         [<ffffffff8049f8e8>]
sys_connect+0xb8/0xd0
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    in-softirq-W at:
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    hardirq-on-W at:
                                         [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff80537966>]
_write_lock_bh+0x36/0x70
                                         [<ffffffffa0460671>]
tcp_packet+0x61/0x13c0 [nf_conntrack]
                                         [<ffffffffa045bfed>]
nf_conntrack_in+0x30d/0x970 [nf_conntrack]
                                         [<ffffffffa0482566>]
ipv4_conntrack_local+0x56/0x80 [nf_conntrack_ipv4]
                                         [<ffffffff804c7ab7>]
nf_iterate+0x67/0xa0
                                         [<ffffffff804c7bc3>]
nf_hook_slow+0xd3/0x120
                                         [<ffffffff804d379f>]
__ip_local_out+0x9f/0xb0
                                         [<ffffffff804d37c1>]
ip_local_out+0x11/0x30
                                         [<ffffffff804d4054>]
ip_queue_xmit+0x1e4/0x3d0
                                         [<ffffffff804e891b>]
tcp_transmit_skb+0x4cb/0x750
                                         [<ffffffff804ea60c>]
tcp_connect+0x36c/0x470
                                         [<ffffffff804ef3b9>]
tcp_v4_connect+0x429/0x500
                                         [<ffffffff804fd137>]
inet_stream_connect+0x227/0x2c0
                                         [<ffffffff8049f8e8>]
sys_connect+0xb8/0xd0
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
  }
  ... key      at: [<ffffffffa046e2b8>]
tcp_lock+0x18/0xffffffffffff44a6 [nf_conntrack]
 ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

 -> (nf_conntrack_lock){-+..} ops: 6826 {
    initial-use  at:
                                         [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff80537716>]
_spin_lock_bh+0x36/0x70
                                         [<ffffffffa045c262>]
nf_conntrack_in+0x582/0x970 [nf_conntrack]
                                         [<ffffffffa0482566>]
ipv4_conntrack_local+0x56/0x80 [nf_conntrack_ipv4]
                                         [<ffffffff804c7ab7>]
nf_iterate+0x67/0xa0
                                         [<ffffffff804c7bc3>]
nf_hook_slow+0xd3/0x120
                                         [<ffffffff804d379f>]
__ip_local_out+0x9f/0xb0
                                         [<ffffffff804d37c1>]
ip_local_out+0x11/0x30
                                         [<ffffffff804d3ac8>]
ip_push_pending_frames+0x2e8/0x420
                                         [<ffffffff804f408f>]
udp_push_pending_frames+0x13f/0x3d0
                                         [<ffffffff804f50b6>]
udp_sendmsg+0x316/0x750
                                         [<ffffffff804fc865>]
inet_sendmsg+0x45/0x80
                                         [<ffffffff8049ff17>]
sock_sendmsg+0x107/0x130
                                         [<ffffffff804a00c9>]
sys_sendmsg+0x189/0x320
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    in-softirq-W at:
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    hardirq-on-W at:
                                         [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff80537716>]
_spin_lock_bh+0x36/0x70
                                         [<ffffffffa045c262>]
nf_conntrack_in+0x582/0x970 [nf_conntrack]
                                         [<ffffffffa0482566>]
ipv4_conntrack_local+0x56/0x80 [nf_conntrack_ipv4]
                                         [<ffffffff804c7ab7>]
nf_iterate+0x67/0xa0
                                         [<ffffffff804c7bc3>]
nf_hook_slow+0xd3/0x120
                                         [<ffffffff804d379f>]
__ip_local_out+0x9f/0xb0
                                         [<ffffffff804d37c1>]
ip_local_out+0x11/0x30
                                         [<ffffffff804d3ac8>]
ip_push_pending_frames+0x2e8/0x420
                                         [<ffffffff804f408f>]
udp_push_pending_frames+0x13f/0x3d0
                                         [<ffffffff804f50b6>]
udp_sendmsg+0x316/0x750
                                         [<ffffffff804fc865>]
inet_sendmsg+0x45/0x80
                                         [<ffffffff8049ff17>]
sock_sendmsg+0x107/0x130
                                         [<ffffffff804a00c9>]
sys_sendmsg+0x189/0x320
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
  }
  ... key      at: [<ffffffffa046dcd8>]
nf_conntrack_lock+0x18/0xffffffffffff4a86 [nf_conntrack]
  -> (&base->lock){++..} ops: 827369 {
     initial-use  at:
                                           [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                           [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                           [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                           [<ffffffff802505e6>]
lock_timer_base+0x36/0x70
                                           [<ffffffff802507ba>]
__mod_timer+0x3a/0xe0
                                           [<ffffffff8025092b>]
mod_timer+0x4b/0x60
                                           [<ffffffff806fe0e4>]
con_init+0x239/0x23e
                                           [<ffffffff806fd5ef>]
console_init+0x22/0x36
                                           [<ffffffff806dabf0>]
start_kernel+0x265/0x419
                                           [<ffffffff806da299>]
x86_64_start_reservations+0x99/0xb9
                                           [<ffffffff806da3b4>]
x86_64_start_kernel+0xd8/0xdf
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     in-hardirq-W at:
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     in-softirq-W at:
                                           [<ffffffffffffffff>]
0xffffffffffffffff
   }
   ... key      at: [<ffffffff80967498>] __key.21376+0x0/0x8
  ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffff802505e6>] lock_timer_base+0x36/0x70
   [<ffffffff802507ba>] __mod_timer+0x3a/0xe0
   [<ffffffffa045b435>] __nf_conntrack_confirm+0x2a5/0x3a0 [nf_conntrack]
   [<ffffffffa04826d5>] ipv4_confirm+0x125/0x140 [nf_conntrack_ipv4]
   [<ffffffff804c7ab7>] nf_iterate+0x67/0xa0
   [<ffffffff804c7bc3>] nf_hook_slow+0xd3/0x120
   [<ffffffff804d4b50>] ip_mc_output+0xe0/0x210
   [<ffffffff804d37d0>] ip_local_out+0x20/0x30
   [<ffffffff804d3ac8>] ip_push_pending_frames+0x2e8/0x420
   [<ffffffff804f408f>] udp_push_pending_frames+0x13f/0x3d0
   [<ffffffff804f50b6>] udp_sendmsg+0x316/0x750
   [<ffffffff804fc865>] inet_sendmsg+0x45/0x80
   [<ffffffff8049ff17>] sock_sendmsg+0x107/0x130
   [<ffffffff804a00c9>] sys_sendmsg+0x189/0x320
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

 ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

 ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

 -> (&tcp_hashinfo.bhash[i].lock){-+..} ops: 487 {
    initial-use  at:
                                         [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                         [<ffffffff804d9aaa>]
inet_csk_get_port+0x1ba/0x2d0
                                         [<ffffffff804fd2f6>]
inet_bind+0x126/0x200
                                         [<ffffffff8049f9b0>] sys_bind+0xb0/0xd0
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    in-softirq-W at:
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    hardirq-on-W at:
                                         [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                         [<ffffffff804d9aaa>]
inet_csk_get_port+0x1ba/0x2d0
                                         [<ffffffff804fd2f6>]
inet_bind+0x126/0x200
                                         [<ffffffff8049f9b0>] sys_bind+0xb0/0xd0
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
  }
  ... key      at: [<ffffffff81042560>] __key.43256+0x0/0x8
  -> (&hashinfo->ehash_locks[i]){-+..} ops: 332 {
     initial-use  at:
                                           [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                           [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                           [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                           [<ffffffff804d7cf0>]
__inet_hash_nolisten+0xe0/0x140
                                           [<ffffffff804d7807>]
__inet_hash_connect+0x2d7/0x300
                                           [<ffffffff804d787a>]
inet_hash_connect+0x4a/0x60
                                           [<ffffffff804ef21f>]
tcp_v4_connect+0x28f/0x500
                                           [<ffffffff804fd137>]
inet_stream_connect+0x227/0x2c0
                                           [<ffffffff8049f8e8>]
sys_connect+0xb8/0xd0
                                           [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     in-softirq-W at:
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     hardirq-on-W at:
                                           [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                           [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                           [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                           [<ffffffff804d7cf0>]
__inet_hash_nolisten+0xe0/0x140
                                           [<ffffffff804d7807>]
__inet_hash_connect+0x2d7/0x300
                                           [<ffffffff804d787a>]
inet_hash_connect+0x4a/0x60
                                           [<ffffffff804ef21f>]
tcp_v4_connect+0x28f/0x500
                                           [<ffffffff804fd137>]
inet_stream_connect+0x227/0x2c0
                                           [<ffffffff8049f8e8>]
sys_connect+0xb8/0xd0
                                           [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                           [<ffffffffffffffff>]
0xffffffffffffffff
   }
   ... key      at: [<ffffffff81042568>] __key.36312+0x0/0x18
  ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff804d7cf0>] __inet_hash_nolisten+0xe0/0x140
   [<ffffffff804d7807>] __inet_hash_connect+0x2d7/0x300
   [<ffffffff804d787a>] inet_hash_connect+0x4a/0x60
   [<ffffffff804ef21f>] tcp_v4_connect+0x28f/0x500
   [<ffffffff804fd137>] inet_stream_connect+0x227/0x2c0
   [<ffffffff8049f8e8>] sys_connect+0xb8/0xd0
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

  -> (&n->list_lock){++..} ops: 142231 {
     initial-use  at:
                                           [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                           [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                           [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                           [<ffffffff802d1381>]
add_partial+0x21/0x80
                                           [<ffffffff802d43e1>]
__slab_free+0x191/0x350
                                           [<ffffffff802d5bd9>]
kmem_cache_free+0x99/0xf0
                                           [<ffffffff803cf44e>]
acpi_os_release_object+0x9/0xd
                                           [<ffffffff803e89a7>]
acpi_ps_free_op+0x61/0x65
                                           [<ffffffff803e865a>]
acpi_ps_delete_parse_tree+0x3e/0x5c
                                           [<ffffffff803e7984>]
acpi_ps_complete_this_op+0x179/0x189
                                           [<ffffffff803e79bd>]
acpi_ps_complete_op+0x29/0x28a
                                           [<ffffffff803e83cf>]
acpi_ps_parse_loop+0x7b1/0x93e
                                           [<ffffffff803e7449>]
acpi_ps_parse_aml+0xee/0x3c0
                                           [<ffffffff803e643d>]
acpi_ns_one_complete_parse+0x131/0x14c
                                           [<ffffffff803e64a1>]
acpi_ns_parse_table+0x49/0x8c
                                           [<ffffffff803e2eae>]
acpi_ns_load_table+0x7a/0x114
                                           [<ffffffff803ea77e>]
acpi_load_tables+0xf5/0x1e4
                                           [<ffffffff806fbcbe>]
acpi_early_init+0x60/0xf5
                                           [<ffffffff806daced>]
start_kernel+0x362/0x419
                                           [<ffffffff806da299>]
x86_64_start_reservations+0x99/0xb9
                                           [<ffffffff806da3b4>]
x86_64_start_kernel+0xd8/0xdf
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     in-hardirq-W at:
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     in-softirq-W at:
                                           [<ffffffffffffffff>]
0xffffffffffffffff
   }
   ... key      at: [<ffffffff81022f04>] __key.23338+0x0/0xc
  ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff802d1381>] add_partial+0x21/0x80
   [<ffffffff802d43e1>] __slab_free+0x191/0x350
   [<ffffffff802d5bd9>] kmem_cache_free+0x99/0xf0
   [<ffffffff804d7419>] inet_bind_bucket_destroy+0x29/0x30
   [<ffffffff804d74a7>] inet_put_port+0x87/0xb0
   [<ffffffff804ef755>] tcp_v4_destroy_sock+0x205/0x260
   [<ffffffff804d8d12>] inet_csk_destroy_sock+0x52/0x140
   [<ffffffff804dd7ae>] tcp_close+0x3ce/0x4d0
   [<ffffffff804fe1c2>] inet_release+0x42/0x70
   [<ffffffff8049ef54>] sock_release+0x24/0x90
   [<ffffffff8049efd2>] sock_close+0x12/0x30
   [<ffffffff802d9d45>] __fput+0xd5/0x1f0
   [<ffffffff802d9e7d>] fput+0x1d/0x30
   [<ffffffff802d637b>] filp_close+0x5b/0x90
   [<ffffffff802d6469>] sys_close+0xb9/0x120
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

 ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff804d746f>] inet_put_port+0x4f/0xb0
   [<ffffffff804ef755>] tcp_v4_destroy_sock+0x205/0x260
   [<ffffffff804d8d12>] inet_csk_destroy_sock+0x52/0x140
   [<ffffffff804dd7ae>] tcp_close+0x3ce/0x4d0
   [<ffffffff804fe1c2>] inet_release+0x42/0x70
   [<ffffffff8049ef54>] sock_release+0x24/0x90
   [<ffffffff8049efd2>] sock_close+0x12/0x30
   [<ffffffff802d9d45>] __fput+0xd5/0x1f0
   [<ffffffff802d9e7d>] fput+0x1d/0x30
   [<ffffffff802d637b>] filp_close+0x5b/0x90
   [<ffffffff802d6469>] sys_close+0xb9/0x120
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

 -> (&list->lock#3){-+..} ops: 12322 {
    initial-use  at:
                                         [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff80537716>]
_spin_lock_bh+0x36/0x70
                                         [<ffffffff804c22f7>]
dev_deactivate+0x197/0x1d0
                                         [<ffffffff804ae775>]
dev_close+0x65/0xc0
                                         [<ffffffff804b0d9d>]
dev_change_flags+0x9d/0x1e0
                                         [<ffffffff804bac05>]
do_setlink+0x2b5/0x450
                                         [<ffffffff804bb484>]
rtnl_newlink+0x444/0x500
                                         [<ffffffff804b9c2d>]
rtnetlink_rcv_msg+0x18d/0x240
                                         [<ffffffff804c48d9>]
netlink_rcv_skb+0x89/0xb0
                                         [<ffffffff804b9a89>]
rtnetlink_rcv+0x29/0x40
                                         [<ffffffff804c45fd>]
netlink_unicast+0x2bd/0x2d0
                                         [<ffffffff804c5814>]
netlink_sendmsg+0x214/0x300
                                         [<ffffffff8049ff17>]
sock_sendmsg+0x107/0x130
                                         [<ffffffff804a00c9>]
sys_sendmsg+0x189/0x320
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    in-softirq-W at:
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    hardirq-on-W at:
                                         [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff80537716>]
_spin_lock_bh+0x36/0x70
                                         [<ffffffff804c22f7>]
dev_deactivate+0x197/0x1d0
                                         [<ffffffff804ae775>]
dev_close+0x65/0xc0
                                         [<ffffffff804b0d9d>]
dev_change_flags+0x9d/0x1e0
                                         [<ffffffff804bac05>]
do_setlink+0x2b5/0x450
                                         [<ffffffff804bb484>]
rtnl_newlink+0x444/0x500
                                         [<ffffffff804b9c2d>]
rtnetlink_rcv_msg+0x18d/0x240
                                         [<ffffffff804c48d9>]
netlink_rcv_skb+0x89/0xb0
                                         [<ffffffff804b9a89>]
rtnetlink_rcv+0x29/0x40
                                         [<ffffffff804c45fd>]
netlink_unicast+0x2bd/0x2d0
                                         [<ffffffff804c5814>]
netlink_sendmsg+0x214/0x300
                                         [<ffffffff8049ff17>]
sock_sendmsg+0x107/0x130
                                         [<ffffffff804a00c9>]
sys_sendmsg+0x189/0x320
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
  }
  ... key      at: [<ffffffff81041740>] __key.19984+0x0/0x20
 ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

 -> (_xmit_ETHER#2){-+..} ops: 3070 {
    initial-use  at:
                                         [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                         [<ffffffff804c2212>]
dev_deactivate+0xb2/0x1d0
                                         [<ffffffff804ae775>]
dev_close+0x65/0xc0
                                         [<ffffffff804b0d9d>]
dev_change_flags+0x9d/0x1e0
                                         [<ffffffff804bac05>]
do_setlink+0x2b5/0x450
                                         [<ffffffff804bb484>]
rtnl_newlink+0x444/0x500
                                         [<ffffffff804b9c2d>]
rtnetlink_rcv_msg+0x18d/0x240
                                         [<ffffffff804c48d9>]
netlink_rcv_skb+0x89/0xb0
                                         [<ffffffff804b9a89>]
rtnetlink_rcv+0x29/0x40
                                         [<ffffffff804c45fd>]
netlink_unicast+0x2bd/0x2d0
                                         [<ffffffff804c5814>]
netlink_sendmsg+0x214/0x300
                                         [<ffffffff8049ff17>]
sock_sendmsg+0x107/0x130
                                         [<ffffffff804a00c9>]
sys_sendmsg+0x189/0x320
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    in-softirq-W at:
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    hardirq-on-W at:
                                         [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                         [<ffffffff804c2212>]
dev_deactivate+0xb2/0x1d0
                                         [<ffffffff804ae775>]
dev_close+0x65/0xc0
                                         [<ffffffff804b0d9d>]
dev_change_flags+0x9d/0x1e0
                                         [<ffffffff804bac05>]
do_setlink+0x2b5/0x450
                                         [<ffffffff804bb484>]
rtnl_newlink+0x444/0x500
                                         [<ffffffff804b9c2d>]
rtnetlink_rcv_msg+0x18d/0x240
                                         [<ffffffff804c48d9>]
netlink_rcv_skb+0x89/0xb0
                                         [<ffffffff804b9a89>]
rtnetlink_rcv+0x29/0x40
                                         [<ffffffff804c45fd>]
netlink_unicast+0x2bd/0x2d0
                                         [<ffffffff804c5814>]
netlink_sendmsg+0x214/0x300
                                         [<ffffffff8049ff17>]
sock_sendmsg+0x107/0x130
                                         [<ffffffff804a00c9>]
sys_sendmsg+0x189/0x320
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
  }
  ... key      at: [<ffffffff81040e68>] netdev_xmit_lock_key+0x8/0x1e0
  -> (&sta->flaglock){.+..} ops: 22130 {
     initial-use  at:
                                           [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                           [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                           [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                           [<ffffffffa0167eb9>]
set_sta_flags+0x29/0x50 [mac80211]
                                           [<ffffffffa0168843>]
ieee80211_rx_mgmt_assoc_resp+0x2d3/0xcb0 [mac80211]
                                           [<ffffffffa0169373>]
ieee80211_sta_rx_queued_mgmt+0x153/0x900 [mac80211]
                                           [<ffffffffa0169bbb>]
ieee80211_sta_work+0x9b/0x7f0 [mac80211]
                                           [<ffffffff80258325>]
run_workqueue+0x105/0x240
                                           [<ffffffff8025866f>]
worker_thread+0xaf/0x130
                                           [<ffffffff8025c9f9>]
kthread+0x49/0x90
                                           [<ffffffff8020d7ba>]
child_rip+0xa/0x20
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     in-softirq-W at:
                                           [<ffffffffffffffff>]
0xffffffffffffffff
   }
   ... key      at: [<ffffffffa0182ac8>]
__key.34687+0x0/0xffffffffffff4630 [mac80211]
  ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

  ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

  -> (_xmit_IEEE80211#2){-+..} ops: 3092 {
     initial-use  at:
                                           [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                           [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                           [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                           [<ffffffff804c268a>]
__qdisc_run+0x23a/0x290
                                           [<ffffffff804b1fc0>]
dev_queue_xmit+0x2e0/0x5f0
                                           [<ffffffffa0175021>]
ieee80211_tx_skb+0x61/0x70 [mac80211]
                                           [<ffffffffa01672b7>]
ieee80211_send_probe_req+0x1a7/0x220 [mac80211]
                                           [<ffffffffa016a2f6>]
ieee80211_sta_work+0x7d6/0x7f0 [mac80211]
                                           [<ffffffff80258325>]
run_workqueue+0x105/0x240
                                           [<ffffffff8025866f>]
worker_thread+0xaf/0x130
                                           [<ffffffff8025c9f9>]
kthread+0x49/0x90
                                           [<ffffffff8020d7ba>]
child_rip+0xa/0x20
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     in-softirq-W at:
                                           [<ffffffffffffffff>]
0xffffffffffffffff
     hardirq-on-W at:
                                           [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                           [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                           [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                           [<ffffffff804c268a>]
__qdisc_run+0x23a/0x290
                                           [<ffffffff804b1fc0>]
dev_queue_xmit+0x2e0/0x5f0
                                           [<ffffffffa0175021>]
ieee80211_tx_skb+0x61/0x70 [mac80211]
                                           [<ffffffffa01672b7>]
ieee80211_send_probe_req+0x1a7/0x220 [mac80211]
                                           [<ffffffffa016a2f6>]
ieee80211_sta_work+0x7d6/0x7f0 [mac80211]
                                           [<ffffffff80258325>]
run_workqueue+0x105/0x240
                                           [<ffffffff8025866f>]
worker_thread+0xaf/0x130
                                           [<ffffffff8025c9f9>]
kthread+0x49/0x90
                                           [<ffffffff8020d7ba>]
child_rip+0xa/0x20
                                           [<ffffffffffffffff>]
0xffffffffffffffff
   }
   ... key      at: [<ffffffff81040ff0>] netdev_xmit_lock_key+0x190/0x1e0
   -> (&priv->lock){++..} ops: 48192 {
      initial-use  at:
                                             [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                             [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                             [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                             [<ffffffffa019aff9>]
iwl3945_reset_qos+0x19/0x230 [iwl3945]
                                             [<ffffffffa019d63e>]
iwl3945_pci_probe+0x35e/0xf70 [iwl3945]
                                             [<ffffffff803b332c>]
pci_device_probe+0x7c/0xa0
                                             [<ffffffff8043624f>]
driver_probe_device+0xbf/0x320
                                             [<ffffffff8043654b>]
__driver_attach+0x9b/0xa0
                                             [<ffffffff8043588b>]
bus_for_each_dev+0x6b/0xa0
                                             [<ffffffff80435fbc>]
driver_attach+0x1c/0x20
                                             [<ffffffff80435030>]
bus_add_driver+0x1f0/0x2b0
                                             [<ffffffff80436733>]
driver_register+0x73/0x170
                                             [<ffffffff803b361d>]
__pci_register_driver+0x7d/0xd0
                                             [<ffffffffa008f04a>]
0xffffffffa008f04a
                                             [<ffffffff8020903c>]
_stext+0x3c/0x170
                                             [<ffffffff8027b99f>]
sys_init_module+0xaf/0x1e0
                                             [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                             [<ffffffffffffffff>]
0xffffffffffffffff
      in-hardirq-W at:
                                             [<ffffffffffffffff>]
0xffffffffffffffff
      in-softirq-W at:
                                             [<ffffffffffffffff>]
0xffffffffffffffff
    }
    ... key      at: [<ffffffffa01b1fe4>]
__key.39355+0x0/0xffffffffffff79b5 [iwl3945]
    -> (&rxq->lock){.+..} ops: 52904 {
       initial-use  at:
                                               [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                               [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                               [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                               [<ffffffffa019bad2>]
iwl3945_rx_allocate+0x32/0x1a0 [iwl3945]
                                               [<ffffffffa019f11c>]
iwl3945_rx_replenish+0x1c/0x50 [iwl3945]
                                               [<ffffffffa01a8429>]
iwl3945_hw_nic_init+0x399/0x9c0 [iwl3945]
                                               [<ffffffffa019faca>]
__iwl3945_up+0x9a/0x630 [iwl3945]
                                               [<ffffffffa01a3648>]
iwl3945_mac_start+0x418/0x820 [iwl3945]
                                               [<ffffffffa016b292>]
ieee80211_open+0x2d2/0x810 [mac80211]
                                               [<ffffffff804b18b2>]
dev_open+0xc2/0x100
                                               [<ffffffff804b0d9d>]
dev_change_flags+0x9d/0x1e0
                                               [<ffffffff804bac05>]
do_setlink+0x2b5/0x450
                                               [<ffffffff804baead>]
rtnl_setlink+0x10d/0x150
                                               [<ffffffff804b9c2d>]
rtnetlink_rcv_msg+0x18d/0x240
                                               [<ffffffff804c48d9>]
netlink_rcv_skb+0x89/0xb0
                                               [<ffffffff804b9a89>]
rtnetlink_rcv+0x29/0x40
                                               [<ffffffff804c45fd>]
netlink_unicast+0x2bd/0x2d0
                                               [<ffffffff804c5814>]
netlink_sendmsg+0x214/0x300
                                               [<ffffffff8049ff17>]
sock_sendmsg+0x107/0x130
                                               [<ffffffff804a00c9>]
sys_sendmsg+0x189/0x320
                                               [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                               [<ffffffffffffffff>]
0xffffffffffffffff
       in-softirq-W at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
     }
     ... key      at: [<ffffffffa01b2050>]
__key.37074+0x0/0xffffffffffff7949 [iwl3945]
     -> (&zone->lock){.+..} ops: 2249020 {
        initial-use  at:
                                                 [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                                 [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                                 [<ffffffff805376a1>]
_spin_lock+0x31/0x70
                                                 [<ffffffff802ad5b0>]
free_pages_bulk+0x30/0x310
                                                 [<ffffffff802adc3b>]
free_hot_cold_page+0x27b/0x2b0
                                                 [<ffffffff802adcdb>]
free_hot_page+0xb/0x10
                                                 [<ffffffff802ae185>]
__free_pages+0x35/0x40
                                                 [<ffffffff8070a23f>]
__free_pages_bootmem+0x4f/0x51
                                                 [<ffffffff806f4ade>]
free_all_bootmem_core+0xfa/0x1fc
                                                 [<ffffffff806f4bf0>]
free_all_bootmem+0x10/0x12
                                                 [<ffffffff806ef6d0>]
mem_init+0x1e/0x161
                                                 [<ffffffff806dac35>]
start_kernel+0x2aa/0x419
                                                 [<ffffffff806da299>]
x86_64_start_reservations+0x99/0xb9
                                                 [<ffffffff806da3b4>]
x86_64_start_kernel+0xd8/0xdf
                                                 [<ffffffffffffffff>]
0xffffffffffffffff
        in-softirq-W at:
                                                 [<ffffffffffffffff>]
0xffffffffffffffff
      }
      ... key      at: [<ffffffff81020d8c>] __key.28617+0x0/0x8
     ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffff802acf7e>] get_page_from_freelist+0x54e/0x5a0
   [<ffffffff802ad0c0>] __alloc_pages_internal+0xf0/0x4f0
   [<ffffffff802d3e38>] __slab_alloc+0x388/0x560
   [<ffffffff802d4ca7>] __kmalloc_track_caller+0x117/0x150
   [<ffffffff804a67de>] __alloc_skb+0x6e/0x150
   [<ffffffffa019bbe1>] iwl3945_rx_allocate+0x141/0x1a0 [iwl3945]
   [<ffffffffa019f11c>] iwl3945_rx_replenish+0x1c/0x50 [iwl3945]
   [<ffffffffa01a8429>] iwl3945_hw_nic_init+0x399/0x9c0 [iwl3945]
   [<ffffffffa019faca>] __iwl3945_up+0x9a/0x630 [iwl3945]
   [<ffffffffa01a3648>] iwl3945_mac_start+0x418/0x820 [iwl3945]
   [<ffffffffa016b292>] ieee80211_open+0x2d2/0x810 [mac80211]
   [<ffffffff804b18b2>] dev_open+0xc2/0x100
   [<ffffffff804b0d9d>] dev_change_flags+0x9d/0x1e0
   [<ffffffff804bac05>] do_setlink+0x2b5/0x450
   [<ffffffff804baead>] rtnl_setlink+0x10d/0x150
   [<ffffffff804b9c2d>] rtnetlink_rcv_msg+0x18d/0x240
   [<ffffffff804c48d9>] netlink_rcv_skb+0x89/0xb0
   [<ffffffff804b9a89>] rtnetlink_rcv+0x29/0x40
   [<ffffffff804c45fd>] netlink_unicast+0x2bd/0x2d0
   [<ffffffff804c5814>] netlink_sendmsg+0x214/0x300
   [<ffffffff8049ff17>] sock_sendmsg+0x107/0x130
   [<ffffffff804a00c9>] sys_sendmsg+0x189/0x320
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

     ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff802d3e7e>] __slab_alloc+0x3ce/0x560
   [<ffffffff802d4106>] kmem_cache_alloc+0xf6/0x100
   [<ffffffff804a67b4>] __alloc_skb+0x44/0x150
   [<ffffffffa019bbe1>] iwl3945_rx_allocate+0x141/0x1a0 [iwl3945]
   [<ffffffffa019f11c>] iwl3945_rx_replenish+0x1c/0x50 [iwl3945]
   [<ffffffffa01a8429>] iwl3945_hw_nic_init+0x399/0x9c0 [iwl3945]
   [<ffffffffa019faca>] __iwl3945_up+0x9a/0x630 [iwl3945]
   [<ffffffffa01a3648>] iwl3945_mac_start+0x418/0x820 [iwl3945]
   [<ffffffffa016b292>] ieee80211_open+0x2d2/0x810 [mac80211]
   [<ffffffff804b18b2>] dev_open+0xc2/0x100
   [<ffffffff804b0d9d>] dev_change_flags+0x9d/0x1e0
   [<ffffffff804bac05>] do_setlink+0x2b5/0x450
   [<ffffffff804baead>] rtnl_setlink+0x10d/0x150
   [<ffffffff804b9c2d>] rtnetlink_rcv_msg+0x18d/0x240
   [<ffffffff804c48d9>] netlink_rcv_skb+0x89/0xb0
   [<ffffffff804b9a89>] rtnetlink_rcv+0x29/0x40
   [<ffffffff804c45fd>] netlink_unicast+0x2bd/0x2d0
   [<ffffffff804c5814>] netlink_sendmsg+0x214/0x300
   [<ffffffff8049ff17>] sock_sendmsg+0x107/0x130
   [<ffffffff804a00c9>] sys_sendmsg+0x189/0x320
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

    ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffffa019efaf>] iwl3945_rx_queue_restock+0x1f/0x170 [iwl3945]
   [<ffffffffa019f136>] iwl3945_rx_replenish+0x36/0x50 [iwl3945]
   [<ffffffffa01a8429>] iwl3945_hw_nic_init+0x399/0x9c0 [iwl3945]
   [<ffffffffa019faca>] __iwl3945_up+0x9a/0x630 [iwl3945]
   [<ffffffffa01a3648>] iwl3945_mac_start+0x418/0x820 [iwl3945]
   [<ffffffffa016b292>] ieee80211_open+0x2d2/0x810 [mac80211]
   [<ffffffff804b18b2>] dev_open+0xc2/0x100
   [<ffffffff804b0d9d>] dev_change_flags+0x9d/0x1e0
   [<ffffffff804bac05>] do_setlink+0x2b5/0x450
   [<ffffffff804baead>] rtnl_setlink+0x10d/0x150
   [<ffffffff804b9c2d>] rtnetlink_rcv_msg+0x18d/0x240
   [<ffffffff804c48d9>] netlink_rcv_skb+0x89/0xb0
   [<ffffffff804b9a89>] rtnetlink_rcv+0x29/0x40
   [<ffffffff804c45fd>] netlink_unicast+0x2bd/0x2d0
   [<ffffffff804c5814>] netlink_sendmsg+0x214/0x300
   [<ffffffff8049ff17>] sock_sendmsg+0x107/0x130
   [<ffffffff804a00c9>] sys_sendmsg+0x189/0x320
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

    ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

    ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

    -> (&cwq->lock){++..} ops: 98321 {
       initial-use  at:
                                               [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                               [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                               [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                               [<ffffffff80258e1f>]
__queue_work+0x1f/0x50
                                               [<ffffffff80258edd>]
queue_work_on+0x4d/0x60
                                               [<ffffffff8025902a>]
queue_work+0x1a/0x20
                                               [<ffffffff80257e9c>]
call_usermodehelper_exec+0xbc/0xe0
                                               [<ffffffff8039f2b8>]
kobject_uevent_env+0x448/0x5c0
                                               [<ffffffff8039f43b>]
kobject_uevent+0xb/0x10
                                               [<ffffffff8039e662>]
kset_register+0x52/0x60
                                               [<ffffffff80435b92>]
bus_register+0xd2/0x2e0
                                               [<ffffffff806ff04f>]
platform_bus_init+0x30/0x44
                                               [<ffffffff806ff145>]
driver_init+0x25/0x39
                                               [<ffffffff806da66d>]
kernel_init+0x118/0x194
                                               [<ffffffff8020d7ba>]
child_rip+0xa/0x20
                                               [<ffffffffffffffff>]
0xffffffffffffffff
       in-hardirq-W at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
       in-softirq-W at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
     }
     ... key      at: [<ffffffff80967514>] __key.21884+0x0/0x8
     ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffff802367cd>] __wake_up+0x2d/0x70
   [<ffffffff8025873f>] insert_work+0x4f/0x60
   [<ffffffff80258e31>] __queue_work+0x31/0x50
   [<ffffffff80258edd>] queue_work_on+0x4d/0x60
   [<ffffffff8025902a>] queue_work+0x1a/0x20
   [<ffffffff80257e9c>] call_usermodehelper_exec+0xbc/0xe0
   [<ffffffff8039f2b8>] kobject_uevent_env+0x448/0x5c0
   [<ffffffff8039f43b>] kobject_uevent+0xb/0x10
   [<ffffffff8039e662>] kset_register+0x52/0x60
   [<ffffffff80435b92>] bus_register+0xd2/0x2e0
   [<ffffffff806ff04f>] platform_bus_init+0x30/0x44
   [<ffffffff806ff145>] driver_init+0x25/0x39
   [<ffffffff806da66d>] kernel_init+0x118/0x194
   [<ffffffff8020d7ba>] child_rip+0xa/0x20
   [<ffffffffffffffff>] 0xffffffffffffffff

    ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffff80258e1f>] __queue_work+0x1f/0x50
   [<ffffffff80258edd>] queue_work_on+0x4d/0x60
   [<ffffffff8025902a>] queue_work+0x1a/0x20
   [<ffffffffa01a50ef>] iwl3945_mac_hw_scan+0x24f/0x290 [iwl3945]
   [<ffffffffa01627f9>] ieee80211_start_scan+0x99/0x2b0 [mac80211]
   [<ffffffffa016a25e>] ieee80211_sta_work+0x73e/0x7f0 [mac80211]
   [<ffffffff80258325>] run_workqueue+0x105/0x240
   [<ffffffff8025866f>] worker_thread+0xaf/0x130
   [<ffffffff8025c9f9>] kthread+0x49/0x90
   [<ffffffff8020d7ba>] child_rip+0xa/0x20
   [<ffffffffffffffff>] 0xffffffffffffffff

    -> (&list->lock#6){.+..} ops: 60988 {
       initial-use  at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
       in-softirq-W at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
     }
     ... key      at: [<ffffffffa0182ab0>]
__key.17254+0x0/0xffffffffffff4648 [mac80211]
    ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

    -> (&priv->sta_lock){.+..} ops: 3137 {
       initial-use  at:
                                               [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                               [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                               [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                               [<ffffffffa019ae63>]
iwl3945_clear_stations_table+0x23/0x60 [iwl3945]
                                               [<ffffffffa019d606>]
iwl3945_pci_probe+0x326/0xf70 [iwl3945]
                                               [<ffffffff803b332c>]
pci_device_probe+0x7c/0xa0
                                               [<ffffffff8043624f>]
driver_probe_device+0xbf/0x320
                                               [<ffffffff8043654b>]
__driver_attach+0x9b/0xa0
                                               [<ffffffff8043588b>]
bus_for_each_dev+0x6b/0xa0
                                               [<ffffffff80435fbc>]
driver_attach+0x1c/0x20
                                               [<ffffffff80435030>]
bus_add_driver+0x1f0/0x2b0
                                               [<ffffffff80436733>]
driver_register+0x73/0x170
                                               [<ffffffff803b361d>]
__pci_register_driver+0x7d/0xd0
                                               [<ffffffffa008f04a>]
0xffffffffa008f04a
                                               [<ffffffff8020903c>]
_stext+0x3c/0x170
                                               [<ffffffff8027b99f>]
sys_init_module+0xaf/0x1e0
                                               [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                               [<ffffffffffffffff>]
0xffffffffffffffff
       in-softirq-W at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
     }
     ... key      at: [<ffffffffa01b1fd4>]
__key.39357+0x0/0xffffffffffff79c5 [iwl3945]
    ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffffa01a650a>] iwl3945_hw_build_tx_cmd_rate+0x9a/0x1e0 [iwl3945]
   [<ffffffffa01a2041>] iwl3945_mac_tx+0x551/0x990 [iwl3945]
   [<ffffffffa01734ee>] __ieee80211_tx+0x4e/0x150 [mac80211]
   [<ffffffffa0173a75>] ieee80211_master_start_xmit+0x245/0x530 [mac80211]
   [<ffffffff804b028d>] dev_hard_start_xmit+0x28d/0x310
   [<ffffffff804c266c>] __qdisc_run+0x21c/0x290
   [<ffffffff804b1fc0>] dev_queue_xmit+0x2e0/0x5f0
   [<ffffffffa0175021>] ieee80211_tx_skb+0x61/0x70 [mac80211]
   [<ffffffffa01672b7>] ieee80211_send_probe_req+0x1a7/0x220 [mac80211]
   [<ffffffffa016a2f6>] ieee80211_sta_work+0x7d6/0x7f0 [mac80211]
   [<ffffffff80258325>] run_workqueue+0x105/0x240
   [<ffffffff8025866f>] worker_thread+0xaf/0x130
   [<ffffffff8025c9f9>] kthread+0x49/0x90
   [<ffffffff8020d7ba>] child_rip+0xa/0x20
   [<ffffffffffffffff>] 0xffffffffffffffff

    -> (&local->queue_stop_reason_lock){.+..} ops: 3091 {
       initial-use  at:
                                               [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                               [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                               [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                               [<ffffffffa0175656>]
ieee80211_wake_queues_by_reason+0x26/0x80 [mac80211]
                                               [<ffffffffa01756bb>]
ieee80211_wake_queues+0xb/0x10 [mac80211]
                                               [<ffffffffa01a57ea>]
iwl3945_bg_alive_start+0x15a/0x3a0 [iwl3945]
                                               [<ffffffff80258325>]
run_workqueue+0x105/0x240
                                               [<ffffffff8025866f>]
worker_thread+0xaf/0x130
                                               [<ffffffff8025c9f9>]
kthread+0x49/0x90
                                               [<ffffffff8020d7ba>]
child_rip+0xa/0x20
                                               [<ffffffffffffffff>]
0xffffffffffffffff
       in-softirq-W at:
                                               [<ffffffffffffffff>]
0xffffffffffffffff
     }
     ... key      at: [<ffffffffa0182aa0>]
__key.35230+0x0/0xffffffffffff4658 [mac80211]
    ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

   ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffffa01a1b55>] iwl3945_mac_tx+0x65/0x990 [iwl3945]
   [<ffffffffa01734ee>] __ieee80211_tx+0x4e/0x150 [mac80211]
   [<ffffffffa0173a75>] ieee80211_master_start_xmit+0x245/0x530 [mac80211]
   [<ffffffff804b028d>] dev_hard_start_xmit+0x28d/0x310
   [<ffffffff804c266c>] __qdisc_run+0x21c/0x290
   [<ffffffff804b1fc0>] dev_queue_xmit+0x2e0/0x5f0
   [<ffffffffa0175021>] ieee80211_tx_skb+0x61/0x70 [mac80211]
   [<ffffffffa01672b7>] ieee80211_send_probe_req+0x1a7/0x220 [mac80211]
   [<ffffffffa016a2f6>] ieee80211_sta_work+0x7d6/0x7f0 [mac80211]
   [<ffffffff80258325>] run_workqueue+0x105/0x240
   [<ffffffff8025866f>] worker_thread+0xaf/0x130
   [<ffffffff8025c9f9>] kthread+0x49/0x90
   [<ffffffff8020d7ba>] child_rip+0xa/0x20
   [<ffffffffffffffff>] 0xffffffffffffffff

   ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

   -> (&rs_sta->lock){.+..} ops: 9505 {
      initial-use  at:
                                             [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                             [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                             [<ffffffff80537824>]
_spin_lock_irqsave+0x44/0x90
                                             [<ffffffffa01a95e8>]
iwl3945_rate_scale_init+0x68/0x1b0 [iwl3945]
                                             [<ffffffffa01a2c0b>]
iwl3945_post_associate+0x19b/0x240 [iwl3945]
                                             [<ffffffffa01a2ded>]
iwl3945_bss_info_changed+0x13d/0x180 [iwl3945]
                                             [<ffffffffa015d977>]
ieee80211_bss_info_change_notify+0x37/0x50 [mac80211]
                                             [<ffffffffa01690d4>]
ieee80211_rx_mgmt_assoc_resp+0xb64/0xcb0 [mac80211]
                                             [<ffffffffa0169373>]
ieee80211_sta_rx_queued_mgmt+0x153/0x900 [mac80211]
                                             [<ffffffffa0169bbb>]
ieee80211_sta_work+0x9b/0x7f0 [mac80211]
                                             [<ffffffff80258325>]
run_workqueue+0x105/0x240
                                             [<ffffffff8025866f>]
worker_thread+0xaf/0x130
                                             [<ffffffff8025c9f9>]
kthread+0x49/0x90
                                             [<ffffffff8020d7ba>]
child_rip+0xa/0x20
                                             [<ffffffffffffffff>]
0xffffffffffffffff
      in-softirq-W at:
                                             [<ffffffffffffffff>]
0xffffffffffffffff
    }
    ... key      at: [<ffffffffa01b2070>]
__key.34794+0x0/0xffffffffffff7929 [iwl3945]
    ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

   ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff80537824>] _spin_lock_irqsave+0x44/0x90
   [<ffffffffa01a8d39>] rs_get_rate+0x109/0x4c0 [iwl3945]
   [<ffffffffa016ba36>] rate_control_get_rate+0xb6/0xc0 [mac80211]
   [<ffffffffa01728eb>] invoke_tx_handlers+0x4eb/0xe50 [mac80211]
   [<ffffffffa0173a4d>] ieee80211_master_start_xmit+0x21d/0x530 [mac80211]
   [<ffffffff804b028d>] dev_hard_start_xmit+0x28d/0x310
   [<ffffffff804c266c>] __qdisc_run+0x21c/0x290
   [<ffffffff804b1fc0>] dev_queue_xmit+0x2e0/0x5f0
   [<ffffffffa0172153>] ieee80211_subif_start_xmit+0x3d3/0x680 [mac80211]
   [<ffffffff804b028d>] dev_hard_start_xmit+0x28d/0x310
   [<ffffffff804c266c>] __qdisc_run+0x21c/0x290
   [<ffffffff804b1fc0>] dev_queue_xmit+0x2e0/0x5f0
   [<ffffffff8051d7d3>] packet_sendmsg+0x273/0x2b0
   [<ffffffff8049e64a>] sock_aio_write+0x17a/0x190
   [<ffffffff802d8421>] do_sync_write+0xf1/0x140
   [<ffffffff802d8bb9>] vfs_write+0x179/0x190
   [<ffffffff802d8cc0>] sys_write+0x50/0x90
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

   ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff802d3e7e>] __slab_alloc+0x3ce/0x560
   [<ffffffff802d4df6>] __kmalloc+0x116/0x150
   [<ffffffff804a5e74>] pskb_expand_head+0x54/0x180
   [<ffffffffa0171d09>] ieee80211_skb_resize+0x79/0xf0 [mac80211]
   [<ffffffffa0173967>] ieee80211_master_start_xmit+0x137/0x530 [mac80211]
   [<ffffffff804b028d>] dev_hard_start_xmit+0x28d/0x310
   [<ffffffff804c266c>] __qdisc_run+0x21c/0x290
   [<ffffffff804b1fc0>] dev_queue_xmit+0x2e0/0x5f0
   [<ffffffffa0172153>] ieee80211_subif_start_xmit+0x3d3/0x680 [mac80211]
   [<ffffffff804b028d>] dev_hard_start_xmit+0x28d/0x310
   [<ffffffff804c266c>] __qdisc_run+0x21c/0x290
   [<ffffffff804b1fc0>] dev_queue_xmit+0x2e0/0x5f0
   [<ffffffff804d489b>] ip_finish_output+0x1bb/0x2e0
   [<ffffffff804d4a24>] ip_output+0x64/0xb0
   [<ffffffff804d37d0>] ip_local_out+0x20/0x30
   [<ffffffff804d3ac8>] ip_push_pending_frames+0x2e8/0x420
   [<ffffffff804f408f>] udp_push_pending_frames+0x13f/0x3d0
   [<ffffffff804f50b6>] udp_sendmsg+0x316/0x750
   [<ffffffff804fc865>] inet_sendmsg+0x45/0x80
   [<ffffffff8049ff17>] sock_sendmsg+0x107/0x130
   [<ffffffff804a03aa>] sys_sendto+0xea/0x120
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

  ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

  ... acquired at:
   [<ffffffff8026ff53>] __lock_acquire+0xe13/0x1280
   [<ffffffff80270451>] lock_acquire+0x91/0xc0
   [<ffffffff805376a1>] _spin_lock+0x31/0x70
   [<ffffffff802d3e7e>] __slab_alloc+0x3ce/0x560
   [<ffffffff802d4df6>] __kmalloc+0x116/0x150
   [<ffffffff804a5e74>] pskb_expand_head+0x54/0x180
   [<ffffffffa0171d09>] ieee80211_skb_resize+0x79/0xf0 [mac80211]
   [<ffffffffa0172045>] ieee80211_subif_start_xmit+0x2c5/0x680 [mac80211]
   [<ffffffff804b028d>] dev_hard_start_xmit+0x28d/0x310
   [<ffffffff804c266c>] __qdisc_run+0x21c/0x290
   [<ffffffff804b1fc0>] dev_queue_xmit+0x2e0/0x5f0
   [<ffffffff804b60fc>] neigh_resolve_output+0x10c/0x2e0
   [<ffffffff804d48fa>] ip_finish_output+0x21a/0x2e0
   [<ffffffff804d4c48>] ip_mc_output+0x1d8/0x210
   [<ffffffff804d37d0>] ip_local_out+0x20/0x30
   [<ffffffff804d3ac8>] ip_push_pending_frames+0x2e8/0x420
   [<ffffffff804f408f>] udp_push_pending_frames+0x13f/0x3d0
   [<ffffffff804f50b6>] udp_sendmsg+0x316/0x750
   [<ffffffff804fc865>] inet_sendmsg+0x45/0x80
   [<ffffffff8049ff17>] sock_sendmsg+0x107/0x130
   [<ffffffff804a00c9>] sys_sendmsg+0x189/0x320
   [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b
   [<ffffffffffffffff>] 0xffffffffffffffff

 ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

 ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

 -> (&queue->syn_wait_lock){-+..} ops: 21 {
    initial-use  at:
                                         [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff80537966>]
_write_lock_bh+0x36/0x70
                                         [<ffffffff804a43cc>]
reqsk_queue_alloc+0xec/0x120
                                         [<ffffffff804d8bc6>]
inet_csk_listen_start+0x26/0x120
                                         [<ffffffff804fd819>]
inet_listen+0x89/0xa0
                                         [<ffffffff8049ed95>]
sys_listen+0x75/0x80
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    in-softirq-W at:
                                         [<ffffffffffffffff>] 0xffffffffffffffff
    hardirq-on-W at:
                                         [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                         [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                         [<ffffffff80537966>]
_write_lock_bh+0x36/0x70
                                         [<ffffffff804a43cc>]
reqsk_queue_alloc+0xec/0x120
                                         [<ffffffff804d8bc6>]
inet_csk_listen_start+0x26/0x120
                                         [<ffffffff804fd819>]
inet_listen+0x89/0xa0
                                         [<ffffffff8049ed95>]
sys_listen+0x75/0x80
                                         [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                         [<ffffffffffffffff>] 0xffffffffffffffff
  }
  ... key      at: [<ffffffff810402e8>] __key.32241+0x0/0x18
 ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff

 ... acquired at:
   [<ffffffffffffffff>] 0xffffffffffffffff


the soft-irq-unsafe lock's dependencies:
-> (&fbc->lock){--..} ops: 4449 {
   initial-use  at:
                                       [<ffffffff8026f2e7>]
__lock_acquire+0x1a7/0x1280
                                       [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                       [<ffffffff805376a1>] _spin_lock+0x31/0x70
                                       [<ffffffff803aa578>]
__percpu_counter_add+0x58/0x80
                                       [<ffffffff802d9aae>]
get_empty_filp+0x7e/0x1a0
                                       [<ffffffff802e46d6>]
path_lookup_open+0x36/0xd0
                                       [<ffffffff802e5598>]
do_filp_open+0xb8/0x930
                                       [<ffffffff802d6548>]
do_sys_open+0x78/0x100
                                       [<ffffffff802d65fb>] sys_open+0x1b/0x20
                                       [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                       [<ffffffffffffffff>] 0xffffffffffffffff
   softirq-on-W at:
                                       [<ffffffff8026f4ec>]
__lock_acquire+0x3ac/0x1280
                                       [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                       [<ffffffff805376a1>] _spin_lock+0x31/0x70
                                       [<ffffffff803aa578>]
__percpu_counter_add+0x58/0x80
                                       [<ffffffff802d9aae>]
get_empty_filp+0x7e/0x1a0
                                       [<ffffffff802e46d6>]
path_lookup_open+0x36/0xd0
                                       [<ffffffff802e5598>]
do_filp_open+0xb8/0x930
                                       [<ffffffff802d6548>]
do_sys_open+0x78/0x100
                                       [<ffffffff802d65fb>] sys_open+0x1b/0x20
                                       [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                       [<ffffffffffffffff>] 0xffffffffffffffff
   hardirq-on-W at:
                                       [<ffffffff8026f69b>]
__lock_acquire+0x55b/0x1280
                                       [<ffffffff80270451>]
lock_acquire+0x91/0xc0
                                       [<ffffffff805376a1>] _spin_lock+0x31/0x70
                                       [<ffffffff803aa578>]
__percpu_counter_add+0x58/0x80
                                       [<ffffffff802d9aae>]
get_empty_filp+0x7e/0x1a0
                                       [<ffffffff802e46d6>]
path_lookup_open+0x36/0xd0
                                       [<ffffffff802e5598>]
do_filp_open+0xb8/0x930
                                       [<ffffffff802d6548>]
do_sys_open+0x78/0x100
                                       [<ffffffff802d65fb>] sys_open+0x1b/0x20
                                       [<ffffffff8020c6db>]
system_call_fastpath+0x16/0x1b
                                       [<ffffffffffffffff>] 0xffffffffffffffff
 }
 ... key      at: [<ffffffff81033ce4>] __key.10712+0x0/0x8

stack backtrace:
Pid: 3654, comm: firefox Not tainted 2.6.28 #102
Call Trace:
 [<ffffffff8026d8df>] check_usage+0x2ef/0x3a0
 [<ffffffff8025083e>] ? __mod_timer+0xbe/0xe0
 [<ffffffff8026fe03>] __lock_acquire+0xcc3/0x1280
 [<ffffffff80270451>] lock_acquire+0x91/0xc0
 [<ffffffff803aa578>] ? __percpu_counter_add+0x58/0x80
 [<ffffffff805376a1>] _spin_lock+0x31/0x70
 [<ffffffff803aa578>] ? __percpu_counter_add+0x58/0x80
 [<ffffffff803aa578>] __percpu_counter_add+0x58/0x80
 [<ffffffff804dd578>] ? tcp_close+0x198/0x4d0
 [<ffffffff804dd5a3>] tcp_close+0x1c3/0x4d0
 [<ffffffff804fe1c2>] inet_release+0x42/0x70
 [<ffffffff8049ef54>] sock_release+0x24/0x90
 [<ffffffff8049efd2>] sock_close+0x12/0x30
 [<ffffffff802d9d45>] __fput+0xd5/0x1f0
 [<ffffffff802d9e7d>] fput+0x1d/0x30
 [<ffffffff802d637b>] filp_close+0x5b/0x90
 [<ffffffff802d6469>] sys_close+0xb9/0x120
 [<ffffffff8020c6db>] system_call_fastpath+0x16/0x1b


After this even Sysrq+B didn't work

Zdenek
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