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Message-ID: <AANLkTik2r1P9dqyw+QoHg9G3PUvvPukY08TpS5Ud1ffG@mail.gmail.com>
Date: Mon, 17 Jan 2011 16:29:29 -0500
From: Miles Lane <miles.lane@...il.com>
To: LKML <linux-kernel@...r.kernel.org>,
Reinette Chatre <reinette.chatre@...el.com>,
Wey-Yi Guy <wey-yi.w.guy@...el.com>,
Intel Linux Wireless <ilw@...ux.intel.com>
Subject: 2.6.37-git16 -- INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected
[ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ]
2.6.37-git16 #2
------------------------------------------------------
wnck-applet/2334 [HC0[0]:SC1[1]:HE0:SE0] is trying to acquire:
(&(&list->lock)->rlock#3){+.-...}, at: [<ffffffff812c8ad1>]
skb_queue_tail+0x1f/0x48
and this task is already holding:
(&(&priv->sta_lock)->rlock){..-...}, at: [<ffffffffa0234de6>]
iwlagn_rx_reply_tx+0x596/0x5ba [iwlagn]
which would create a new lock dependency:
(&(&priv->sta_lock)->rlock){..-...} -> (&(&list->lock)->rlock#3){+.-...}
but this new dependency connects a HARDIRQ-irq-safe lock:
(&(&priv->lock)->rlock){-.-...}
... which became HARDIRQ-irq-safe at:
[<ffffffff8105c1a7>] __lock_acquire+0x2f5/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c162>] _raw_spin_lock_irqsave+0x44/0x57
[<ffffffffa023a4d0>] iwl_isr_ict+0x37/0x1df [iwlagn]
[<ffffffff8107a582>] handle_IRQ_event+0x26/0xb4
[<ffffffff8107c54d>] handle_edge_irq+0xde/0x12a
[<ffffffff810045a7>] handle_irq+0x83/0x8b
[<ffffffff81004276>] do_IRQ+0x48/0x9f
[<ffffffff8135cd53>] ret_from_intr+0x0/0x13
to a HARDIRQ-irq-unsafe lock:
(&(&list->lock)->rlock#3){+.-...}
... which became HARDIRQ-irq-unsafe at:
... [<ffffffff8105c228>] __lock_acquire+0x376/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c069>] _raw_spin_lock+0x36/0x45
[<ffffffffa01f7ed0>] ieee80211_rx_handlers+0x36/0x1ae3 [mac80211]
[<ffffffffa01fa14a>] ieee80211_prepare_and_rx_handle+0x7cd/0x80a [mac80211]
[<ffffffffa01fa973>] ieee80211_rx+0x785/0x7af [mac80211]
[<ffffffffa0234730>] iwlagn_rx_reply_rx+0x2d5/0x2f0 [iwlagn]
[<ffffffffa022b821>] iwl_rx_handle+0x17e/0x2ed [iwlagn]
[<ffffffffa022bf14>] iwl_irq_tasklet+0x266/0x342 [iwlagn]
[<ffffffff81038c46>] tasklet_action+0x85/0xd8
[<ffffffff8103925e>] __do_softirq+0x98/0x136
[<ffffffff8100300c>] call_softirq+0x1c/0x28
[<ffffffff810045e7>] do_softirq+0x38/0x81
[<ffffffff810393a5>] irq_exit+0x44/0x92
[<ffffffff810042b6>] do_IRQ+0x88/0x9f
[<ffffffff8135cd53>] ret_from_intr+0x0/0x13
other info that might help us debug this:
2 locks held by wnck-applet/2334:
#0: (&mm->mmap_sem){++++++}, at: [<ffffffff8135f4b7>]
do_page_fault+0x161/0x340
#1: (&(&priv->sta_lock)->rlock){..-...}, at: [<ffffffffa0234de6>]
iwlagn_rx_reply_tx+0x596/0x5ba [iwlagn]
the dependencies between HARDIRQ-irq-safe lock and the holding lock:
-> (&(&priv->lock)->rlock){-.-...} ops: 1474 {
IN-HARDIRQ-W at:
[<ffffffff8105c1a7>] __lock_acquire+0x2f5/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c162>] _raw_spin_lock_irqsave+0x44/0x57
[<ffffffffa023a4d0>] iwl_isr_ict+0x37/0x1df [iwlagn]
[<ffffffff8107a582>] handle_IRQ_event+0x26/0xb4
[<ffffffff8107c54d>] handle_edge_irq+0xde/0x12a
[<ffffffff810045a7>] handle_irq+0x83/0x8b
[<ffffffff81004276>] do_IRQ+0x48/0x9f
[<ffffffff8135cd53>] ret_from_intr+0x0/0x13
IN-SOFTIRQ-W at:
[<ffffffff8105c1cb>] __lock_acquire+0x319/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c162>] _raw_spin_lock_irqsave+0x44/0x57
[<ffffffffa022bccb>]
iwl_irq_tasklet+0x1d/0x342 [iwlagn]
[<ffffffff81038c46>] tasklet_action+0x85/0xd8
[<ffffffff8103925e>] __do_softirq+0x98/0x136
[<ffffffff8100300c>] call_softirq+0x1c/0x28
[<ffffffff810045e7>] do_softirq+0x38/0x81
[<ffffffff810393a5>] irq_exit+0x44/0x92
[<ffffffff810042b6>] do_IRQ+0x88/0x9f
[<ffffffff8135cd53>] ret_from_intr+0x0/0x13
INITIAL USE at:
[<ffffffff8105c2a9>] __lock_acquire+0x3f7/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c162>] _raw_spin_lock_irqsave+0x44/0x57
[<ffffffffa022a97e>] iwl_pci_probe+0x706/0xe2c [iwlagn]
[<ffffffff811b72ee>] local_pci_probe+0x3f/0x70
[<ffffffff811b787a>] pci_device_probe+0x65/0x96
[<ffffffff81253c32>] driver_probe_device+0xbc/0x157
[<ffffffff81253d17>] __driver_attach+0x4a/0x6b
[<ffffffff81252e7a>] bus_for_each_dev+0x57/0x83
[<ffffffff8125391d>] driver_attach+0x19/0x1b
[<ffffffff81253560>] bus_add_driver+0xae/0x204
[<ffffffff81253f56>] driver_register+0x96/0x103
[<ffffffff811b7aac>] __pci_register_driver+0x61/0xcd
[<ffffffffa012305c>] snd_mask_min+0x7/0x2f
[snd_pcm_oss]
[<ffffffff81000336>] do_one_initcall+0x7a/0x130
[<ffffffff810667ff>] sys_init_module+0xa1/0x1e1
[<ffffffff8100213b>] system_call_fastpath+0x16/0x1b
}
... key at: [<ffffffffa0241e50>]
__key.39500+0x0/0xffffffffffff979a [iwlagn]
... acquired at:
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c069>] _raw_spin_lock+0x36/0x45
[<ffffffffa02318c9>] iwlagn_tx_skb+0x139/0x9e2 [iwlagn]
[<ffffffffa0228479>] iwlagn_mac_tx+0x15/0x27 [iwlagn]
[<ffffffffa01fb3ca>] __ieee80211_tx+0x140/0x1d5 [mac80211]
[<ffffffffa01fc9f4>] ieee80211_tx+0xc4/0x208 [mac80211]
[<ffffffffa01fccd7>] ieee80211_xmit+0x19f/0x1b3 [mac80211]
[<ffffffffa01fde80>] ieee80211_tx_skb+0x4a/0x52 [mac80211]
[<ffffffffa01ffcbf>] ieee80211_send_auth+0x17f/0x18e [mac80211]
[<ffffffffa01f0f2e>] ieee80211_work_work+0x5a0/0xef3 [mac80211]
[<ffffffff81046b55>] process_one_work+0x1b4/0x2f2
[<ffffffff81047f62>] worker_thread+0xff/0x19f
[<ffffffff8104b78b>] kthread+0x9d/0xa5
[<ffffffff81002f14>] kernel_thread_helper+0x4/0x10
-> (&(&priv->sta_lock)->rlock){..-...} ops: 40 {
IN-SOFTIRQ-W at:
[<ffffffff8105c1cb>] __lock_acquire+0x319/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c162>] _raw_spin_lock_irqsave+0x44/0x57
[<ffffffffa0234de6>]
iwlagn_rx_reply_tx+0x596/0x5ba [iwlagn]
[<ffffffffa022b821>] iwl_rx_handle+0x17e/0x2ed [iwlagn]
[<ffffffffa022bf14>]
iwl_irq_tasklet+0x266/0x342 [iwlagn]
[<ffffffff81038c46>] tasklet_action+0x85/0xd8
[<ffffffff8103925e>] __do_softirq+0x98/0x136
[<ffffffff8100300c>] call_softirq+0x1c/0x28
[<ffffffff810045e7>] do_softirq+0x38/0x81
[<ffffffff810393a5>] irq_exit+0x44/0x92
[<ffffffff810042b6>] do_IRQ+0x88/0x9f
[<ffffffff8135cd53>] ret_from_intr+0x0/0x13
[<ffffffff81094487>] get_page_from_freelist+0x3a0/0x4aa
[<ffffffff8109484a>] __alloc_pages_nodemask+0x119/0x66b
[<ffffffff8102240b>] pte_alloc_one+0x1e/0x3a
[<ffffffff810a42e8>] __pte_alloc+0x1f/0xa5
[<ffffffff810a614f>] handle_mm_fault+0x8b/0xc7
[<ffffffff8135f674>] do_page_fault+0x31e/0x340
[<ffffffff8135d01f>] page_fault+0x1f/0x30
INITIAL USE at:
[<ffffffff8105c2a9>] __lock_acquire+0x3f7/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c162>] _raw_spin_lock_irqsave+0x44/0x57
[<ffffffffa02384f4>]
iwlagn_alloc_bcast_station+0x27/0xfa [iwlagn]
[<ffffffffa0229c15>] __iwl_up+0xa2/0x2e8 [iwlagn]
[<ffffffffa0229fd5>] iwlagn_mac_start+0x2e/0x159 [iwlagn]
[<ffffffffa01f35b5>]
ieee80211_do_open+0xd4/0x454 [mac80211]
[<ffffffffa01f3988>] ieee80211_open+0x53/0x58 [mac80211]
[<ffffffff812d5b44>] __dev_open+0x96/0xcd
[<ffffffff812d5d74>] __dev_change_flags+0xa8/0x12c
[<ffffffff812d5e6f>] dev_change_flags+0x1c/0x51
[<ffffffff812e0778>] do_setlink+0x2b0/0x676
[<ffffffff812e10c8>] rtnl_setlink+0xca/0xea
[<ffffffff812e13af>] rtnetlink_rcv_msg+0x1f0/0x206
[<ffffffff812efa28>] netlink_rcv_skb+0x40/0x8b
[<ffffffff812e0dc4>] rtnetlink_rcv+0x21/0x28
[<ffffffff812ef519>] netlink_unicast+0xe6/0x150
[<ffffffff812ef830>] netlink_sendmsg+0x2ad/0x2cb
[<ffffffff812c1ebd>] __sock_sendmsg+0x66/0x72
[<ffffffff812c25db>] sock_sendmsg+0x9c/0xb1
[<ffffffff812c3ef8>] sys_sendmsg+0x245/0x2c3
[<ffffffff8100213b>] system_call_fastpath+0x16/0x1b
}
... key at: [<ffffffffa0241e78>]
__key.39458+0x0/0xffffffffffff9772 [iwlagn]
... acquired at:
[<ffffffff8105a76b>] check_irq_usage+0x42/0x89
[<ffffffff8105c98d>] __lock_acquire+0xadb/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c162>] _raw_spin_lock_irqsave+0x44/0x57
[<ffffffff812c8ad1>] skb_queue_tail+0x1f/0x48
[<ffffffffa01e5c96>] ieee80211_tx_status_irqsafe+0x37/0x8d [mac80211]
[<ffffffffa0232c4f>] iwlagn_tx_queue_reclaim+0x13b/0x1d8 [iwlagn]
[<ffffffffa0234d20>] iwlagn_rx_reply_tx+0x4d0/0x5ba [iwlagn]
[<ffffffffa022b821>] iwl_rx_handle+0x17e/0x2ed [iwlagn]
[<ffffffffa022bf14>] iwl_irq_tasklet+0x266/0x342 [iwlagn]
[<ffffffff81038c46>] tasklet_action+0x85/0xd8
[<ffffffff8103925e>] __do_softirq+0x98/0x136
[<ffffffff8100300c>] call_softirq+0x1c/0x28
[<ffffffff810045e7>] do_softirq+0x38/0x81
[<ffffffff810393a5>] irq_exit+0x44/0x92
[<ffffffff810042b6>] do_IRQ+0x88/0x9f
[<ffffffff8135cd53>] ret_from_intr+0x0/0x13
[<ffffffff81094487>] get_page_from_freelist+0x3a0/0x4aa
[<ffffffff8109484a>] __alloc_pages_nodemask+0x119/0x66b
[<ffffffff8102240b>] pte_alloc_one+0x1e/0x3a
[<ffffffff810a42e8>] __pte_alloc+0x1f/0xa5
[<ffffffff810a614f>] handle_mm_fault+0x8b/0xc7
[<ffffffff8135f674>] do_page_fault+0x31e/0x340
[<ffffffff8135d01f>] page_fault+0x1f/0x30
the dependencies between the lock to be acquired and HARDIRQ-irq-unsafe lock:
-> (&(&list->lock)->rlock#3){+.-...} ops: 565 {
HARDIRQ-ON-W at:
[<ffffffff8105c228>] __lock_acquire+0x376/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c069>] _raw_spin_lock+0x36/0x45
[<ffffffffa01f7ed0>]
ieee80211_rx_handlers+0x36/0x1ae3 [mac80211]
[<ffffffffa01fa14a>]
ieee80211_prepare_and_rx_handle+0x7cd/0x80a [mac80211]
[<ffffffffa01fa973>] ieee80211_rx+0x785/0x7af [mac80211]
[<ffffffffa0234730>]
iwlagn_rx_reply_rx+0x2d5/0x2f0 [iwlagn]
[<ffffffffa022b821>] iwl_rx_handle+0x17e/0x2ed [iwlagn]
[<ffffffffa022bf14>]
iwl_irq_tasklet+0x266/0x342 [iwlagn]
[<ffffffff81038c46>] tasklet_action+0x85/0xd8
[<ffffffff8103925e>] __do_softirq+0x98/0x136
[<ffffffff8100300c>] call_softirq+0x1c/0x28
[<ffffffff810045e7>] do_softirq+0x38/0x81
[<ffffffff810393a5>] irq_exit+0x44/0x92
[<ffffffff810042b6>] do_IRQ+0x88/0x9f
[<ffffffff8135cd53>] ret_from_intr+0x0/0x13
IN-SOFTIRQ-W at:
[<ffffffff8105c1cb>] __lock_acquire+0x319/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c162>] _raw_spin_lock_irqsave+0x44/0x57
[<ffffffff812c8ad1>] skb_queue_tail+0x1f/0x48
[<ffffffffa01fa142>]
ieee80211_prepare_and_rx_handle+0x7c5/0x80a [mac80211]
[<ffffffffa01fa973>] ieee80211_rx+0x785/0x7af [mac80211]
[<ffffffffa0234730>]
iwlagn_rx_reply_rx+0x2d5/0x2f0 [iwlagn]
[<ffffffffa022b821>] iwl_rx_handle+0x17e/0x2ed [iwlagn]
[<ffffffffa022bf14>]
iwl_irq_tasklet+0x266/0x342 [iwlagn]
[<ffffffff81038c46>] tasklet_action+0x85/0xd8
[<ffffffff8103925e>] __do_softirq+0x98/0x136
[<ffffffff8100300c>] call_softirq+0x1c/0x28
[<ffffffff810045e7>] do_softirq+0x38/0x81
[<ffffffff810393a5>] irq_exit+0x44/0x92
[<ffffffff810042b6>] do_IRQ+0x88/0x9f
[<ffffffff8135cd53>] ret_from_intr+0x0/0x13
INITIAL USE at:
[<ffffffff8105c2a9>] __lock_acquire+0x3f7/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c162>] _raw_spin_lock_irqsave+0x44/0x57
[<ffffffff812c8ad1>] skb_queue_tail+0x1f/0x48
[<ffffffffa01fa142>]
ieee80211_prepare_and_rx_handle+0x7c5/0x80a [mac80211]
[<ffffffffa01fa973>] ieee80211_rx+0x785/0x7af [mac80211]
[<ffffffffa0234730>]
iwlagn_rx_reply_rx+0x2d5/0x2f0 [iwlagn]
[<ffffffffa022b821>] iwl_rx_handle+0x17e/0x2ed [iwlagn]
[<ffffffffa022bf14>] iwl_irq_tasklet+0x266/0x342 [iwlagn]
[<ffffffff81038c46>] tasklet_action+0x85/0xd8
[<ffffffff8103925e>] __do_softirq+0x98/0x136
[<ffffffff8100300c>] call_softirq+0x1c/0x28
[<ffffffff810045e7>] do_softirq+0x38/0x81
[<ffffffff810393a5>] irq_exit+0x44/0x92
[<ffffffff810042b6>] do_IRQ+0x88/0x9f
[<ffffffff8135cd53>] ret_from_intr+0x0/0x13
}
... key at: [<ffffffffa020ab50>]
__key.17747+0x0/0xffffffffffffc7e0 [mac80211]
... acquired at:
[<ffffffff8105a76b>] check_irq_usage+0x42/0x89
[<ffffffff8105c98d>] __lock_acquire+0xadb/0xdcd
[<ffffffff8105d0fb>] lock_acquire+0x8a/0xa2
[<ffffffff8135c162>] _raw_spin_lock_irqsave+0x44/0x57
[<ffffffff812c8ad1>] skb_queue_tail+0x1f/0x48
[<ffffffffa01e5c96>] ieee80211_tx_status_irqsafe+0x37/0x8d [mac80211]
[<ffffffffa0232c4f>] iwlagn_tx_queue_reclaim+0x13b/0x1d8 [iwlagn]
[<ffffffffa0234d20>] iwlagn_rx_reply_tx+0x4d0/0x5ba [iwlagn]
[<ffffffffa022b821>] iwl_rx_handle+0x17e/0x2ed [iwlagn]
[<ffffffffa022bf14>] iwl_irq_tasklet+0x266/0x342 [iwlagn]
[<ffffffff81038c46>] tasklet_action+0x85/0xd8
[<ffffffff8103925e>] __do_softirq+0x98/0x136
[<ffffffff8100300c>] call_softirq+0x1c/0x28
[<ffffffff810045e7>] do_softirq+0x38/0x81
[<ffffffff810393a5>] irq_exit+0x44/0x92
[<ffffffff810042b6>] do_IRQ+0x88/0x9f
[<ffffffff8135cd53>] ret_from_intr+0x0/0x13
[<ffffffff81094487>] get_page_from_freelist+0x3a0/0x4aa
[<ffffffff8109484a>] __alloc_pages_nodemask+0x119/0x66b
[<ffffffff8102240b>] pte_alloc_one+0x1e/0x3a
[<ffffffff810a42e8>] __pte_alloc+0x1f/0xa5
[<ffffffff810a614f>] handle_mm_fault+0x8b/0xc7
[<ffffffff8135f674>] do_page_fault+0x31e/0x340
[<ffffffff8135d01f>] page_fault+0x1f/0x30
stack backtrace:
Pid: 2334, comm: wnck-applet Not tainted 2.6.37-git16 #2
Call Trace:
<IRQ> [<ffffffff8105a715>] ? check_usage+0x33e/0x352
[<ffffffff81063726>] ? __module_text_address+0x11/0x5f
[<ffffffff8105a2ea>] ? check_usage_forwards+0x0/0x78
[<ffffffff8105a76b>] ? check_irq_usage+0x42/0x89
[<ffffffff8105c98d>] ? __lock_acquire+0xadb/0xdcd
[<ffffffff8105cc70>] ? __lock_acquire+0xdbe/0xdcd
[<ffffffff8105d0fb>] ? lock_acquire+0x8a/0xa2
[<ffffffff812c8ad1>] ? skb_queue_tail+0x1f/0x48
[<ffffffff8135c162>] ? _raw_spin_lock_irqsave+0x44/0x57
[<ffffffff812c8ad1>] ? skb_queue_tail+0x1f/0x48
[<ffffffff812c8ad1>] ? skb_queue_tail+0x1f/0x48
[<ffffffffa01e5c96>] ? ieee80211_tx_status_irqsafe+0x37/0x8d [mac80211]
[<ffffffffa0232c4f>] ? iwlagn_tx_queue_reclaim+0x13b/0x1d8 [iwlagn]
[<ffffffffa0232bb4>] ? iwlagn_tx_queue_reclaim+0xa0/0x1d8 [iwlagn]
[<ffffffffa0232d4c>] ? iwlagn_hwrate_to_tx_control+0x60/0x68 [iwlagn]
[<ffffffffa0234d20>] ? iwlagn_rx_reply_tx+0x4d0/0x5ba [iwlagn]
[<ffffffffa022b821>] ? iwl_rx_handle+0x17e/0x2ed [iwlagn]
[<ffffffff8105ade2>] ? mark_held_locks+0x50/0x72
[<ffffffffa022bf14>] ? iwl_irq_tasklet+0x266/0x342 [iwlagn]
[<ffffffff81038c46>] ? tasklet_action+0x85/0xd8
[<ffffffff8103925e>] ? __do_softirq+0x98/0x136
[<ffffffff8100300c>] ? call_softirq+0x1c/0x28
[<ffffffff810045e7>] ? do_softirq+0x38/0x81
[<ffffffff810393a5>] ? irq_exit+0x44/0x92
[<ffffffff810042b6>] ? do_IRQ+0x88/0x9f
[<ffffffff8135cd53>] ? ret_from_intr+0x0/0x13
<EOI> [<ffffffff8135f760>] ? add_preempt_count+0x25/0xae
[<ffffffff81094487>] ? get_page_from_freelist+0x3a0/0x4aa
[<ffffffff8109484a>] ? __alloc_pages_nodemask+0x119/0x66b
[<ffffffff8105cc70>] ? __lock_acquire+0xdbe/0xdcd
[<ffffffff8102240b>] ? pte_alloc_one+0x1e/0x3a
[<ffffffff810a42e8>] ? __pte_alloc+0x1f/0xa5
[<ffffffff810a614f>] ? handle_mm_fault+0x8b/0xc7
[<ffffffff8135f674>] ? do_page_fault+0x31e/0x340
[<ffffffff810c3716>] ? fput+0x1d/0x1b5
[<ffffffff8105987c>] ? trace_hardirqs_off_caller+0xa3/0x10b
[<ffffffff8135bea3>] ? trace_hardirqs_off_thunk+0x3a/0x3c
[<ffffffff8135d01f>] ? page_fault+0x1f/0x30
--
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