[mythtv] ringbuffer.cpp

Jonas Arndt jonas.arndt at thearndtfamily.com
Sat Mar 22 20:57:29 UTC 2014


On 03/22/2014 01:25 PM, Jonas Arndt wrote:
>
> On 03/22/2014 01:13 PM, Jonas Arndt wrote:
>> JY,
>>
>> I put debug compiled binaries on the front-end. It states it dumped a 
>> core file, but nothing to be found. I have gone through the man core 
>> documentation and I can't find why it wouldn't write the core file. I 
>> even tried to run "mythfrontend.real --syslog local7" from an xterm 
>> and while it starts myth and says it generates a core when I try to 
>> watch a recording, the core can't be found. I also played with the 
>> apport system and after the crash there is a growing file 
>> /var/crash/_usr_bin_mythfrontend.real.1000.crash being generated. It 
>> grows up to almost 5 MB and then just end up being 86k. Don't know 
>> what is going on with that, but there is no stack trace after that.
>>
>> I am running mythbuntu, do you know why I could not get a core file? 
>> XBMC has no issue generating one.
>>
>> Cheers,
>>
>> // Jonas
> Sorry, I used another email client and it put the text on top. No need 
> to tell me about the list rules about top posting, I know, it was a 
> mistake!
>
> I also fixed the core generation thing. Apparently a ulimit issue. I 
> will be back with a backtrace later. What is the typical way you share 
> a backtrace on the list?
>
> Cheers,
>
> // Jonas

So the crash is a result of a segmentation fault in qatomic_x86_64.h 
(QBasicAtomicInt::ref). Unfortunately there is no information on from 
where in myth we are ending up here. If I look at this on google it 
seems that this is often caused by QString operations.

Cheers,

// Jonas
>
>
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