Re: [ANNOUNCE] 3.0-rt3

Darren Hart
2011-07-26T17:01:56Z

On 07/26/2011 04:44 AM, Maarten Lankhorst wrote:
> On 07/26/2011 08:00 AM, Darren Hart wrote:
>> On 07/25/2011 03:20 PM, Darren Hart wrote:
>>> On 07/24/2011 09:12 AM, Thomas Gleixner wrote:
>>>> On Sun, 24 Jul 2011, Maarten Lankhorst wrote:
>>> ...
>>>
>>>>> Also not sure where this one came from:
>>>>> [ 37.456688] BUG: spinlock bad magic on CPU#3, threaded-ml/1619
>>>>> [ 37.456690] lock: ffff8801fdc74d50, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
>>>>> [ 37.456692] Pid: 1619, comm: threaded-ml Tainted: G C 3.0.0-rt3-patser+ #39

Maarten, I'm finding fairly little out there on what threaded-ml might
be. What I do find suggests 3D visualization and real-time audio
playback. Are you working with something like this? If so, which
libraries are you using? If not, any idea what this is?

>>>>> [ 37.456693] Call Trace:
>>>>> [ 37.456697] [<ffffffff81607a78>] spin_bug+0xa0/0xa8
>>>>> [ 37.456699] [<ffffffff8132b412>] do_raw_spin_lock+0xa2/0x170
>>>>> [ 37.456702] [<ffffffff8104a201>] ? get_parent_ip+0x11/0x50
>>>>> [ 37.456704] [<ffffffff8160d783>] _raw_spin_lock+0x23/0x30
>>>>> [ 37.456706] [<ffffffff810931ce>] rt_mutex_start_proxy_lock+0x2e/0xd0
>>>>> [ 37.456708] [<ffffffff8109093a>] futex_requeue+0x47a/0x850
>>>>> [ 37.456710] [<ffffffff8109138e>] do_futex+0xae/0xb00

Maarten, could you provide the addr2line of the addresses from do_futex
to spin_bug ? This will help me trace the path.

Thanks,

--
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel