linux-kernel - Re: [Patch] restore the RCU callback to defer put_task

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Message-ID: <e6babb600608091019pb17dcbft555cf5c964574664@mail.gmail.com>
Date:	Wed, 9 Aug 2006 10:19:37 -0700
From:	"Robert Crocombe" <rcrocomb@...il.com>
To:	"Steven Rostedt" <rostedt@...dmis.org>
Cc:	"hui Bill Huey" <billh@...ppy.monkey.org>,
	linux-kernel@...r.kernel.org, "Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Darren Hart" <dvhltc@...ibm.com>
Subject: Re: [Patch] restore the RCU callback to defer put_task_struct() Re: Problems with 2.6.17-rt8

On 8/8/06, Robert Crocombe <rcrocomb@...il.com> wrote:
> I'm back to poking at 16-rt29 to see if the problem is simply somewhat
> less likely.

Unable to crash the 2.6.16-rt29 kernel after 462 kernel compilations.
But I got about 40 of these warnings:

irq 106: nobody cared (try booting with the "irqpoll" option)

Call Trace:
       <ffffffff88003c32>{:tg3:tg3_interrupt_tagged+61}
       <ffffffff801523a0>{__report_bad_irq+56}
       <ffffffff801525ce>{note_interrupt+479}
       <ffffffff80152287>{do_irqd+514}
       <ffffffff80152085>{do_irqd+0}
       <ffffffff8013f454>{keventd_create_kthread+0}
       <ffffffff8013f72b>{kthread+219}
       <ffffffff8012719c>{schedule_tail+198}
       <ffffffff8010bc6e>{child_rip+8}
       <ffffffff8013f454>{keventd_create_kthread+0}
       <ffffffff8013f650>{kthread+0}
       <ffffffff8010bc66>{child_rip+0}
---------------------------
| preempt count: 00000001 ]
| 1-level deep critical section nesting:
----------------------------------------
.. [<ffffffff80373aca>] .... _raw_spin_lock_irq+0x17/0x24
.....[<ffffffff8015226e>] ..   ( <= do_irqd+0x1e9/0x2e3)

handlers:
[<ffffffff88003bf5>] (tg3_interrupt_tagged+0x0/0x11b [tg3])

-- 
Robert Crocombe
rcrocomb@...il.com
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