On 05/02/2014 04:37 AM, Sebastian Andrzej Siewior wrote:

* Fernando Lopez-Lezcano | 2014-04-26 11:29:04 [-0700]:

quoted

Saw this a moment ago (3.14.1 + rt1, Fedora 19 laptop - I think I
have seen something similar in 3.12.x-r):

Yes, you did: https://lkml.org/lkml/2014/3/7/163
You did not test I've sent. Care to do so?

I did patch my kernel and (I think) I did not see the problem again. I 
did get some very occassional hangs that seemed to be video related but 
I think I could not see what had caused them.

quoted

Apr 26 11:16:11 localhost kernel: [   96.323248] ------------[ cut
here ]------------
Apr 26 11:16:11 localhost kernel: [   96.323262] WARNING: CPU: 0 PID:
2051 at lib/list_debug.c:59 __list_del_entry+0xa1/0xd0()
Apr 26 11:16:11 localhost kernel: [   96.323264] list_del corruption.
prev->next should be ffff8802101196a0, but was 0000000000000001
Apr 26 11:16:11 localhost kernel: [   96.323266] Modules linked in:

and please send backtrace information properly formatted. This is
terrible hard to read.

Sorry about that, I will attach files in the future.

I re-patched 3.14.3-rt5 with a slightly tweaked version of you patch. 
Will see what happens and report back.
-- Fernando