[mythtv] what's this dmesg output mean?

[Kirby Bakken]

Michael T. Dean wrote:

>Kirby Bakken wrote:
>  
>
>>Michael T. Dean wrote:
>>    
>>
>>>Kirby Bakken wrote:
>>>      
>>>
>>>>Running a Fusion5 Gold card, and an HD5000 card.  Biostar MB with Nvidia 
>>>>6200 PCIe card.  Kernel 2.6.15-gentoo.  Nvidia video version 8178 (and 
>>>>yes, GL Vsync doesn't work..  I live with the occasional 'horizontal 
>>>>seam'.  Also, I'm running SVN 8605.
>>>>
>>>>When watching LiveTv (perhaps watching recordings, I haven't checked 
>>>>that yet), I get this output from 'dmesg':
>>>>...
>>>>
>>>>Trying to fix it up, but a reboot is needed
>>>>Bad page state at free_hot_cold_page (in process 'mythfrontend', page 
>>>>ffff8100013dbdc8)
>>>>flags:0x0100000000000400 mapping:0000000000000000 mapcount:0 count:0
>>>>Backtrace:
>>>>
>>>>Call Trace:<ffffffff8015bd64>{bad_page+113} 
>>>><ffffffff8015c5a5>{free_hot_cold_page+102}
>>>>      <ffffffff8829eb3b>{:nvidia:nv_vm_free_pages+604} 
>>>><ffffffff88299b23>{:nvidia:nv_kern_vma_release+136}
>>>>      <ffffffff8016afbb>{remove_vma+33} <ffffffff8016d0a7>{exit_mmap+205}
>>>>      <ffffffff80135806>{mmput+35} <ffffffff8013a519>{do_exit+530}
>>>>      <ffffffff8013afc6>{sys_exit_group+0} 
>>>><ffffffff8010f91a>{system_call+126}
>>>>        
>>>>
>>>So, did you?  ("Trying to fix it up, but a reboot is needed")  Did 
>>>rebooting fix it?
>>>    
>>>      
>>>
>>Well, that's just it...  there's really nothing 'noticeable' to fix 
>>up...  The mythfrontend still seems to be fine...  It was only because I 
>>was experimenting with my DVICO remote control and looking at dmesg that 
>>I noticed all the 'errata' from this 'apparent' problem.   I was hoping 
>>someone in development might recognize what's happening and elaborate.  
>>If nobody comes up with anything, I'll play around and see if I can 
>>pinpoint what is causing all these 'warning/error' messages.
>>    
>>
>And the answer to my question is?  Once again, in case you forgot, did 
>you reboot?
>
>Mike
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>  
>
Yes, I rebooted. And the messages in dmesg show up again.  I'll try to 
find out what 'action' causes these messages to start showing up.  But 
to retate, I reboot..  things work fine, I run the 'dmesg' command and 
it prints out all those 'messages'...  So I reboot, and again, all if 
fine, but eventually, dmesg ends up showing those messages.