* ath5k lockdep warning in 39-rc6+
@ 2011-05-06 22:08 Ben Greear
2011-05-06 22:09 ` Ben Greear
0 siblings, 1 reply; 2+ messages in thread
From: Ben Greear @ 2011-05-06 22:08 UTC (permalink / raw)
To: linux-wireless
The main problem with this is that it disables lockdep
after this...
lanforge-D0-20 login: INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Pid: 1934, comm: net.hotplug Not tainted 2.6.39-rc6-wlc3+ #6
Call Trace:
[<c0448994>] register_lock_class+0x102/0x277
[<c044a4d0>] __lock_acquire+0x8e/0xb78
[<c0625bf3>] ? __ata_qc_complete+0xca/0xcf
[<c062767a>] ? ata_qc_complete+0x15d/0x163
[<c06353c8>] ? ata_hsm_qc_complete+0x9c/0xb5
[<c0635954>] ? ata_sff_hsm_move+0x573/0x592
[<c044b016>] lock_acquire+0x5c/0x70
[<f9c2fe71>] ? ath5k_set_current_imask+0x21/0x62 [ath5k]
[<c075d798>] _raw_spin_lock_irqsave+0x46/0x56
[<f9c2fe71>] ? ath5k_set_current_imask+0x21/0x62 [ath5k]
[<f9c2fe71>] ath5k_set_current_imask+0x21/0x62 [ath5k]
[<f9c30158>] ath5k_intr+0x2a6/0x3e5 [ath5k]
[<c0468b0f>] handle_irq_event_percpu+0x24/0x123
[<c0468c3a>] handle_irq_event+0x2c/0x43
[<c046a37f>] ? handle_edge_irq+0xaa/0xaa
[<c046a3e9>] handle_fasteoi_irq+0x6a/0x88
<IRQ> [<c040315f>] ? do_IRQ+0x34/0x95
[<c0449990>] ? trace_hardirqs_on_caller+0xfe/0x11f
[<c076202e>] ? common_interrupt+0x2e/0x40
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: ath5k lockdep warning in 39-rc6+
2011-05-06 22:08 ath5k lockdep warning in 39-rc6+ Ben Greear
@ 2011-05-06 22:09 ` Ben Greear
0 siblings, 0 replies; 2+ messages in thread
From: Ben Greear @ 2011-05-06 22:09 UTC (permalink / raw)
To: linux-wireless
On 05/06/2011 03:08 PM, Ben Greear wrote:
> The main problem with this is that it disables lockdep
> after this...
>
> lanforge-D0-20 login: INFO: trying to register non-static key.
> the code is fine but needs lockdep annotation.
> turning off the locking correctness validator.
> Pid: 1934, comm: net.hotplug Not tainted 2.6.39-rc6-wlc3+ #6
> Call Trace:
> [<c0448994>] register_lock_class+0x102/0x277
> [<c044a4d0>] __lock_acquire+0x8e/0xb78
> [<c0625bf3>] ? __ata_qc_complete+0xca/0xcf
> [<c062767a>] ? ata_qc_complete+0x15d/0x163
> [<c06353c8>] ? ata_hsm_qc_complete+0x9c/0xb5
> [<c0635954>] ? ata_sff_hsm_move+0x573/0x592
> [<c044b016>] lock_acquire+0x5c/0x70
> [<f9c2fe71>] ? ath5k_set_current_imask+0x21/0x62 [ath5k]
> [<c075d798>] _raw_spin_lock_irqsave+0x46/0x56
> [<f9c2fe71>] ? ath5k_set_current_imask+0x21/0x62 [ath5k]
> [<f9c2fe71>] ath5k_set_current_imask+0x21/0x62 [ath5k]
> [<f9c30158>] ath5k_intr+0x2a6/0x3e5 [ath5k]
> [<c0468b0f>] handle_irq_event_percpu+0x24/0x123
> [<c0468c3a>] handle_irq_event+0x2c/0x43
> [<c046a37f>] ? handle_edge_irq+0xaa/0xaa
> [<c046a3e9>] handle_fasteoi_irq+0x6a/0x88
> <IRQ> [<c040315f>] ? do_IRQ+0x34/0x95
> [<c0449990>] ? trace_hardirqs_on_caller+0xfe/0x11f
> [<c076202e>] ? common_interrupt+0x2e/0x40
>
>
Hrm, may be worse..maybe this is the cause of the deadlock
I'm seeing. This printed out shortly after:
BUG: spinlock lockup on CPU#0, net.hotplug/1934, f5acc470
Pid: 1934, comm: net.hotplug Not tainted 2.6.39-rc6-wlc3+ #6
Call Trace:
[<c057ecf7>] do_raw_spin_lock+0xea/0x108
[<c075d79f>] _raw_spin_lock_irqsave+0x4d/0x56
[<f9c2fe71>] ? ath5k_set_current_imask+0x21/0x62 [ath5k]
[<f9c2fe71>] ath5k_set_current_imask+0x21/0x62 [ath5k]
[<f9c30158>] ath5k_intr+0x2a6/0x3e5 [ath5k]
[<c0468b0f>] handle_irq_event_percpu+0x24/0x123
[<c0468c3a>] handle_irq_event+0x2c/0x43
[<c046a37f>] ? handle_edge_irq+0xaa/0xaa
[<c046a3e9>] handle_fasteoi_irq+0x6a/0x88
<IRQ> [<c040315f>] ? do_IRQ+0x34/0x95
[<c0449990>] ? trace_hardirqs_on_caller+0xfe/0x11f
[<c076202e>] ? common_interrupt+0x2e/0x40
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
^ permalink raw reply [flat|nested] 2+ messages in thread
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