Issues with all kernels after 3.3.7

[Alan M Butler]

On 17 August 2012 14:01, Alan M Butler <alanbutty12 at gmail.com> wrote:
> On 17 August 2012 13:26, Uwe Kleine-König
> <u.kleine-koenig at pengutronix.de> wrote:
>> On Fri, Aug 17, 2012 at 01:47:06PM +0100, alan butler wrote:
>>> I have been trying all kernels after 3.3.7 (except for the 3.5 series)
>>> on my ix2-200
>>> and have found that on every kernel 3.3.8, 3.4, 3.4.2, 3.4.4 =>3.4.7
>>> and now even on 3.6 rc1
>>> and the next dated today 17 august that when i use git for example:
>>>
>>> git clone git://git.videolan.org/x264
>>>
>>> my system just crash's / hangs and even through the serial port i get
>>> no response.
>>> This also happens when i try to access a web interface for example the
>>> serviio java webui.
>>>
>>> The second issue i have noticed is that my raid 0 array hangs / pauses
>>> when being mounted
>>> at system startup. (for approximatly 30 seconds maybe more maybe less
>>> im not certain).
>>> But again on the 3.3.7 kernel there was no issue and no hang.
>>>
>>> If i return to 3.3.7 everything works fine with no other modifications
>>> to the os or kernels.
>>> I am using debian wheezy at the moment but also tried debian squeeze
>>> so it does not
>>> seem to be related to the specific linux version just the kernel.
>> Can you bisect your problem? Doing that between 3.3.7 and 3.3.8 seems to
>> be the obvious range to test.
>>
>> You can also try to enable the various debugging options like
>>
>>         CONFIG_DETECT_HUNG_TASK
>>         CONFIG_PROVE_LOCKING
>>         CONFIG_DEBUG_ATOMIC_SLEEP
>>         CONFIG_MAGIC_SYSRQ
>>
>> or try https://lkml.org/lkml/2012/5/26/83.
>>
>> Best regards
>> Uwe
>>
>> --
>> Pengutronix e.K.                           | Uwe Kleine-König            |
>> Industrial Linux Solutions                 | http://www.pengutronix.de/  |
>
> i enabled the options you said there and i see alot of the following
> popping up while connected through serial:
>
>  BUG: sleeping function called from invalid context at
> include/linux/freezer.h:46
> [  126.896958] in_atomic(): 0, irqs_disabled(): 128, pid: 2180, name:
> console-kit-dae
> [  126.904566] no locks held by console-kit-dae/2180.
> [  126.909378] irq event stamp: 27643
> [  126.912797] hardirqs last  enabled at (27642): [<c03781ac>]
> _raw_spin_unlock_irqrestore+0x3c/0x5c
> [  126.921735] hardirqs last disabled at (27643): [<c00090cc>]
> ret_fast_syscall+0xc/0x38
> [  126.929618] softirqs last  enabled at (25565): [<c001bc20>]
> irq_exit+0x54/0xb8
> [  126.936890] softirqs last disabled at (25558): [<c001bc20>]
> irq_exit+0x54/0xb8
> [  126.944185] [<c000ea8c>] (unwind_backtrace+0x0/0xe0) from
> [<c000b414>] (do_signal+0x84/0x5c0)
> [  126.952764] [<c000b414>] (do_signal+0x84/0x5c0) from [<c000be0c>]
> (do_notify_resume+0x18/0x60)
> [  126.961430] [<c000be0c>] (do_notify_resume+0x18/0x60) from
> [<c0009120>] (work_pending+0x24/0x28)
>
> there seems to be alot more of them when i have serviio upnp server running.

After a little testing with those config options enabled that you
sujested iv found that the problem with git first appears in the 3.4.1
kernel.
For example:
in 3.4.0 kernel i can use 'git clone git://git.videolan.org/x264' successfully.

>From 3.4.1 kernel on  I can not use 'git clone
git://git.videolan.org/x264' the system hangs / crashes with no output
at all.

the other issue the hang / stall while mounting my etx4 raid 0 is
actualy much more recent than i remembered i have tested each kernel
from 3.4.0 all the way to 3.4.9 with the config options enabled as
sujested before and the stall first starts in kernel 3.4.8 and the
following bug keeps popping up repeatedly until the raid is mounted
and then anytime a disk is accessed it seems. I was certain it had
been popping up before 3.4.8.

The following is one of what pops up:

 BUG: sleeping function called from invalid context at
include/linux/freezer.h:46
in_atomic(): 0, irqs_disabled(): 128, pid: 2166, name: minissdpd
no locks held by minissdpd/2166.
 irq event stamp: 2081
hardirqs last  enabled at (2080): [<c02f8dc8>] _raw_spin_unlock_irq+0x24/0x4c
hardirqs last disabled at (2081): [<c00090cc>] ret_fast_syscall+0xc/0x38
softirqs last  enabled at (0): [<c0016b38>] copy_process+0x3f8/0xfe8
softirqs last disabled at (0): [<  (null)>]   (null)
[<c000eae4>] (unwind_backtrace+0x0/0xe0) from [<c000b5a0>]
(do_signal+0x84/0x554)
[<c000b5a0>] (do_signal+0x84/0x554) from [<c000bec0>]
(do_notify_resume+0x18/0x60)
[<c000bec0>] (do_notify_resume+0x18/0x60) from [<c0009120>]
(work_pending+0x24/0x28)