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SubjectRe: [BUG] sched: tip/master show panic while booting/rebooting
Hi, Paul

On 02/25/2014 08:30 AM, Paul E. McKenney wrote:
[snip]
>
> I don't see an opportunity for load_balance() to loop with interrupts
> disabled, but maybe I am looking at the wrong code. The NMI handler
> looks to me like it is diagnosing rather than being the problem.

Thanks for the comment :)

It was a stuck inside pick_next_task_fair(), and we already got one
solution now ;-)

Regards,
Michael Wang

>
> Thanx, Paul
>
>> [<ffffffff8108a88f>] idle_balance+0x10f/0x1c0
>> [<ffffffff8108aa5e>] pick_next_task_fair+0x11e/0x2a0
>> [<ffffffff8107bbf3>] ? dequeue_task+0x73/0x90
>> [<ffffffff815717fa>] __schedule+0x12a/0x670
>> [<ffffffff81571e19>] schedule+0x29/0x70
>> [<ffffffff81067daf>] worker_thread+0x1bf/0x370
>> [<ffffffff81067bf0>] ? manage_workers+0x160/0x160
>> [<ffffffff8106e799>] kthread+0xc9/0xe0
>> [<ffffffff8106e6d0>] ? flush_kthread_worker+0xb0/0xb0
>> [<ffffffff8157d62c>] ret_from_fork+0x7c/0xb0
>> [<ffffffff8106e6d0>] ? flush_kthread_worker+0xb0/0xb0
>> Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
>
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