Attachment 299660 Details for Bug 439739 – iwl3945 circular locking dependency traceback

iwl3945 circular locking dependency traceback

iwl3945-traceback.txt (text/plain), 7.68 KB, created by John Ruemker on 2008-03-31 02:59:47 UTC

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Creator: John Ruemker

Created: 2008-03-31 02:59:47 UTC

Size: 7.68 KB

patch

obsolete

>Mar 30 22:34:44 xps kernel: =======================================================
>Mar 30 22:34:44 xps kernel: [ INFO: possible circular locking dependency detected ]
>Mar 30 22:34:44 xps kernel: 2.6.25-0.172.rc7.git4.fc9.i686 #1
>Mar 30 22:34:44 xps kernel: -------------------------------------------------------
>Mar 30 22:34:44 xps kernel: iwl3945/5142 is trying to acquire lock:
>Mar 30 22:34:44 xps kernel:  (rtnl_mutex){--..}, at: [rtnl_lock+15/17] rtnl_lock+0xf/0x11
>Mar 30 22:34:44 xps kernel: 
>Mar 30 22:34:44 xps kernel: but task is already holding lock:
>Mar 30 22:34:44 xps kernel:  (&ifsta->work){--..}, at: [run_workqueue+145/417] run_workqueue+0x91/0x1a1
>Mar 30 22:34:44 xps kernel: 
>Mar 30 22:34:44 xps kernel: which lock already depends on the new lock.
>Mar 30 22:34:44 xps kernel: 
>Mar 30 22:34:44 xps kernel: 
>Mar 30 22:34:44 xps kernel: the existing dependency chain (in reverse order) is:
>Mar 30 22:34:44 xps kernel: 
>Mar 30 22:34:44 xps kernel: -> #2 (&ifsta->work){--..}:
>Mar 30 22:34:44 xps kernel:        [__lock_acquire+2713/3089] __lock_acquire+0xa99/0xc11
>Mar 30 22:34:44 xps kernel:        [lock_acquire+106/144] lock_acquire+0x6a/0x90
>Mar 30 22:34:44 xps kernel:        [run_workqueue+205/417] run_workqueue+0xcd/0x1a1
>Mar 30 22:34:44 xps kernel:        [worker_thread+182/194] worker_thread+0xb6/0xc2
>Mar 30 22:34:44 xps kernel:        [kthread+59/97] kthread+0x3b/0x61
>Mar 30 22:34:44 xps kernel:        [kernel_thread_helper+7/16] kernel_thread_helper+0x7/0x10
>Mar 30 22:34:44 xps kernel:        [<ffffffff>] 0xffffffff
>Mar 30 22:34:44 xps kernel: 
>Mar 30 22:34:44 xps kernel: -> #1 ((name)){--..}:
>Mar 30 22:34:44 xps kernel:        [__lock_acquire+2713/3089] __lock_acquire+0xa99/0xc11
>Mar 30 22:34:44 xps kernel:        [lock_acquire+106/144] lock_acquire+0x6a/0x90
>Mar 30 22:34:44 xps kernel:        [flush_workqueue+68/133] flush_workqueue+0x44/0x85
>Mar 30 22:34:44 xps kernel:        [<f897340a>] ieee80211_stop+0x276/0x331 [mac80211]
>Mar 30 22:34:44 xps kernel:        [dev_close+82/111] dev_close+0x52/0x6f
>Mar 30 22:34:44 xps kernel:        [rollback_registered+120/248] rollback_registered+0x78/0xf8
>Mar 30 22:34:44 xps kernel:        [unregister_netdevice+55/102] unregister_netdevice+0x37/0x66
>Mar 30 22:34:44 xps NetworkManager: <info>  (wlan0) Supplicant interface state change: 4 -> 0
>Mar 30 22:34:44 xps kernel:        [<f897e352>] __ieee80211_if_del+0x15/0x18 [mac80211]
>Mar 30 22:34:44 xps kernel:        [<f897227f>] ieee80211_unregister_hw+0x68/0x11c [mac80211]
>Mar 30 22:34:44 xps kernel:        [<f8a00e74>] __func__.31628+0x0/0xfffff0bc [iwl3945]
>Mar 30 22:34:44 xps kernel:        [pci_device_remove+25/57] pci_device_remove+0x19/0x39
>Mar 30 22:34:44 xps kernel:        [__device_release_driver+120/150] __device_release_driver+0x78/0x96
>Mar 30 22:34:44 xps kernel:        [driver_detach+178/240] driver_detach+0xb2/0xf0
>Mar 30 22:34:44 xps kernel:        [bus_remove_driver+99/137] bus_remove_driver+0x63/0x89
>Mar 30 22:34:44 xps kernel:        [driver_unregister+42/46] driver_unregister+0x2a/0x2e
>Mar 30 22:34:44 xps kernel:        [pci_unregister_driver+33/90] pci_unregister_driver+0x21/0x5a
>Mar 30 22:34:44 xps kernel:        [<f8a00f2e>] __func__.29596+0x6/0xfffff008 [iwl3945]
>Mar 30 22:34:44 xps kernel:        [sys_delete_module+418/475] sys_delete_module+0x1a2/0x1db
>Mar 30 22:34:44 xps kernel:        [syscall_call+7/11] syscall_call+0x7/0xb
>Mar 30 22:34:44 xps kernel:        [<ffffffff>] 0xffffffff
>Mar 30 22:34:44 xps kernel: 
>Mar 30 22:34:44 xps kernel: -> #0 (rtnl_mutex){--..}:
>Mar 30 22:34:44 xps kernel:        [__lock_acquire+2488/3089] __lock_acquire+0x9b8/0xc11
>Mar 30 22:34:44 xps kernel:        [lock_acquire+106/144] lock_acquire+0x6a/0x90
>Mar 30 22:34:44 xps kernel:        [mutex_lock_nested+219/625] mutex_lock_nested+0xdb/0x271
>Mar 30 22:34:44 xps kernel:        [rtnl_lock+15/17] rtnl_lock+0xf/0x11
>Mar 30 22:34:44 xps kernel:        [<f897c26b>] ieee80211_associated+0x15d/0x19c [mac80211]
>Mar 30 22:34:44 xps kernel:        [<f897ca11>] ieee80211_rx_mgmt_assoc_resp+0x767/0x76f [mac80211]
>Mar 30 22:34:44 xps kernel:        [<f897d096>] ieee80211_sta_rx_queued_mgmt+0x67d/0x1122 [mac80211]
>Mar 30 22:34:44 xps kernel:        [<f897dbc1>] ieee80211_sta_work+0x86/0x58a [mac80211]
>Mar 30 22:34:44 xps kernel:        [run_workqueue+211/417] run_workqueue+0xd3/0x1a1
>Mar 30 22:34:44 xps kernel:        [worker_thread+182/194] worker_thread+0xb6/0xc2
>Mar 30 22:34:44 xps kernel:        [kthread+59/97] kthread+0x3b/0x61
>Mar 30 22:34:44 xps kernel:        [kernel_thread_helper+7/16] kernel_thread_helper+0x7/0x10
>Mar 30 22:34:44 xps kernel:        [<ffffffff>] 0xffffffff
>Mar 30 22:34:44 xps kernel: 
>Mar 30 22:34:44 xps kernel: other info that might help us debug this:
>Mar 30 22:34:44 xps kernel: 
>Mar 30 22:34:44 xps kernel: 2 locks held by iwl3945/5142:
>Mar 30 22:34:44 xps kernel:  #0:  ((name)){--..}, at: [run_workqueue+145/417] run_workqueue+0x91/0x1a1
>Mar 30 22:34:44 xps kernel:  #1:  (&ifsta->work){--..}, at: [run_workqueue+145/417] run_workqueue+0x91/0x1a1
>Mar 30 22:34:44 xps kernel: 
>Mar 30 22:34:44 xps kernel: stack backtrace:
>Mar 30 22:34:44 xps kernel: Pid: 5142, comm: iwl3945 Not tainted 2.6.25-0.172.rc7.git4.fc9.i686 #1
>Mar 30 22:34:44 xps kernel:  [print_circular_bug_tail+91/102] print_circular_bug_tail+0x5b/0x66
>Mar 30 22:34:44 xps kernel:  [print_circular_bug_entry+57/67] ? print_circular_bug_entry+0x39/0x43
>Mar 30 22:34:44 xps kernel:  [__lock_acquire+2488/3089] __lock_acquire+0x9b8/0xc11
>Mar 30 22:34:44 xps kernel:  [native_sched_clock+181/209] ? native_sched_clock+0xb5/0xd1
>Mar 30 22:34:44 xps kernel:  [trace_hardirqs_on+233/266] ? trace_hardirqs_on+0xe9/0x10a
>Mar 30 22:34:44 xps kernel:  [lock_acquire+106/144] lock_acquire+0x6a/0x90
>Mar 30 22:34:44 xps kernel:  [rtnl_lock+15/17] ? rtnl_lock+0xf/0x11
>Mar 30 22:34:44 xps kernel:  [mutex_lock_nested+219/625] mutex_lock_nested+0xdb/0x271
>Mar 30 22:34:44 xps kernel:  [rtnl_lock+15/17] ? rtnl_lock+0xf/0x11
>Mar 30 22:34:44 xps kernel:  [rtnl_lock+15/17] ? rtnl_lock+0xf/0x11
>Mar 30 22:34:44 xps kernel:  [rtnl_lock+15/17] rtnl_lock+0xf/0x11
>Mar 30 22:34:44 xps kernel:  [<f897c26b>] ieee80211_associated+0x15d/0x19c [mac80211]
>Mar 30 22:34:44 xps kernel:  [<f897ca11>] ieee80211_rx_mgmt_assoc_resp+0x767/0x76f [mac80211]
>Mar 30 22:34:44 xps kernel:  [__free_pages_ok+716/854] ? __free_pages_ok+0x2cc/0x356
>Mar 30 22:34:44 xps kernel:  [<f897d096>] ieee80211_sta_rx_queued_mgmt+0x67d/0x1122 [mac80211]
>Mar 30 22:34:44 xps kernel:  [native_sched_clock+181/209] ? native_sched_clock+0xb5/0xd1
>Mar 30 22:34:44 xps kernel:last message repeated 2 times
>Mar 30 22:34:44 xps kernel:  [mark_held_locks+78/102] ? mark_held_locks+0x4e/0x66
>Mar 30 22:34:44 xps kernel:  [_spin_unlock_irqrestore+64/80] ? _spin_unlock_irqrestore+0x40/0x50
>Mar 30 22:34:44 xps kernel:  [trace_hardirqs_on+233/266] ? trace_hardirqs_on+0xe9/0x10a
>Mar 30 22:34:44 xps kernel:  [skb_dequeue+60/67] ? skb_dequeue+0x3c/0x43
>Mar 30 22:34:44 xps kernel:  [<f897dbc1>] ieee80211_sta_work+0x86/0x58a [mac80211]
>Mar 30 22:34:44 xps kernel:  [sched_clock+8/11] ? sched_clock+0x8/0xb
>Mar 30 22:34:44 xps kernel:  [run_workqueue+211/417] run_workqueue+0xd3/0x1a1
>Mar 30 22:34:44 xps kernel:  [run_workqueue+145/417] ? run_workqueue+0x91/0x1a1
>Mar 30 22:34:44 xps kernel:  [<f897db3b>] ? ieee80211_sta_work+0x0/0x58a [mac80211]
>Mar 30 22:34:44 xps kernel:  [worker_thread+182/194] worker_thread+0xb6/0xc2
>Mar 30 22:34:44 xps kernel:  [autoremove_wake_function+0/51] ? autoremove_wake_function+0x0/0x33
>Mar 30 22:34:44 xps kernel:  [worker_thread+0/194] ? worker_thread+0x0/0xc2
>Mar 30 22:34:44 xps kernel:  [kthread+59/97] kthread+0x3b/0x61
>Mar 30 22:34:44 xps kernel:  [kthread+0/97] ? kthread+0x0/0x61
>Mar 30 22:34:44 xps kernel:  [kernel_thread_helper+7/16] kernel_thread_helper+0x7/0x10
>Mar 30 22:34:44 xps kernel:  =======================
>

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Attachments on bug 439739: 299660 | 301458 | 302216