linux-kernel - Re: 3.12.5 CRASH/FREEZE

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Date:	Mon, 23 Dec 2013 02:19:14 +0400
From:	Pavel Vasilyev <pavel@...linux.ru>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
CC:	RT <linux-rt-users@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: 3.12.5 CRASH/FREEZE

20.12.2013 19:05, Sebastian Andrzej Siewior пишет:
> On 12/20/2013 03:57 PM, Pavel Vasilyev wrote:
>>
>> Same bug if attach to ehci hub.
>>
>> ksoftird/0 process of loading the CPU upto 100% Sometimes process
>> irq17/0 - ehci_hcd  or xhci_hcd. After taking the camera out of the
>> socket, the load does not fall, keyboard and console blocked
> 
> Okay, but this problem is unique to your webcam. Keyboard & mice to
> work as usual?
> Could please provide me the addr2line either for the ehci or xhci? I've
> been browsing to the code and I didn't see anything obvious.
> 

Too many bugs, too many computers ...

3.12.5-rt7 work ONLY in UP-mode!!! cmdline: nosmp maxcpus=1

In SMP mode, problems arise in different places on different computers.
On Intel Atom - USB, webcam and console. On the Opteron 285 system
does not boot, can't mount devtmpfs, XFS partitions ...

I can not get to catch the error and find a place neither in debug mode or in
normal. Because everything is frozen completely, and get to the console or logs
is not possible.
I described one situation where had run top and see that the process
ksoftirqd/0 use CPU upto 100%

P.S.
    3.12.5-rt7 still work Basic-RT mode.

-- 

                                                         Pavel.
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