linux-kernel - [rt7 x86_64] oops while running pounder

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Message-ID: <20060802213043.GD10989@in.ibm.com>
Date:	Thu, 3 Aug 2006 03:00:43 +0530
From:	Dipankar Sarma <dipankar@...ibm.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org
Subject: [rt7 x86_64] oops while running pounder

Hello Ingo,

I have been running pounder on my x86_64 box (rt7, 64-bit kernel) and
I see these after a couple of hours. First I see a bunch of
these a while -

[2006-07-28 17:13:51] (8515) snake.exe: START loop #0.
irq 209: nobody cared (try booting with the "irqpoll" option)

Call Trace:
       <ffffffff802582ac>{__report_bad_irq+48}
       <ffffffff802584ca>{note_interrupt+465}
       <ffffffff80242f57>{keventd_create_kthread+0}
       <ffffffff80257964>{thread_simple_irq+126}
       <ffffffff80242f57>{keventd_create_kthread+0}
       <ffffffff80257e06>{do_irqd+206}
       <ffffffff80242f57>{keventd_create_kthread+0}
       <ffffffff80257d38>{do_irqd+0}
       <ffffffff80243249>{kthread+212}
       <ffffffff8020a74e>{child_rip+8}
       <ffffffff80242f57>{keventd_create_kthread+0}
       <ffffffff80240197>{run_workqueue+16}
       <ffffffff80243175>{kthread+0}
       <ffffffff8020a746>{child_rip+0}
---------------------------
| preempt count: 00000001 ]
| 1-level deep critical section nesting:
----------------------------------------
.. [<ffffffff805008c4>] .... _raw_spin_lock_irq+0xf/0x1a
.....[<00000000>] ..   ( <= 0x0)

handlers:
[<ffffffff8043e610>] (usb_hcd_irq+0x0/0x55)


Eventually, the machine oopses -

softirq-tasklet/39[CPU#3]: BUG in __tasklet_action at kernel/softirq.c:488

Call Trace:
       <ffffffff80230f1c>{__WARN_ON+100}
       <ffffffff802357e0>{__tasklet_action+174}
       <ffffffff80235f33>{ksoftirqd+280}
       <ffffffff80235e1b>{ksoftirqd+0}
       <ffffffff80243249>{kthread+212}
       <ffffffff80235e1b>{ksoftirqd+0}
       <ffffffff8020a74e>{child_rip+8}
       <ffffffff80235e1b>{ksoftirqd+0}
       <ffffffff80243175>{kthread+0}
       <ffffffff8020a746>{child_rip+0}
---------------------------
| preempt count: 00000001 ]
| 1-level deep critical section nesting:
----------------------------------------
.. [<ffffffff805008a4>] .... _raw_spin_lock_irqsave+0x18/0x29
.....[<00000000>] ..   ( <= 0x0)

I am investigating, but just FYI in case you can point me to something.

Thanks
Dipankar
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