[ltt-dev] Kernel crashes when creating a trace

[Mathieu Desnoyers]

* Ashwin Tanugula (ashwin.tanugula at broadcom.com) wrote:
> Hi Mathieu,
> 
> SYSRQ-W does not work on my system after the hang (it's a hard hang)
> 
> Is there anything else I could do to provide you with more information on this.

Yes, there is one thing: if you could put "return 1;" at the beginning
of the mips trace clock functions, and ensure that the get_ put_ trace
clock (and the same for kernel/trace/trace-clock-32-to-64.c) also return
without doing nothing, then we could see if it still hangs.

Clearly the trace generated won't have any timestamps, so won't be
useful, but at least it would allow us to pinpoint where the culprit is.

Thanks,

Mathieu


> 
> Thanks,
> Ashwin
> 
> -----Original Message-----
> From: Ashwin Tanugula 
> Sent: Wednesday, November 11, 2009 10:36 AM
> To: 'Mathieu Desnoyers'
> Cc: 'ltt-dev at lists.casi.polymtl.ca'
> Subject: RE: Kernel crashes when creating a trace
> 
>  
> Hi Mathieu,
> 
> >OK. Can you give me a copy of your .config ?
> 
> Please find the attached .config
> 
> >It would also help to know where it gets stucked. You can get this information with SYSRQ-W  (show-blocked-tasks).
> 
> I am working on this and will give it to you as soon as possible.
> 
> Thanks,
> Ashwin
> 
> 

-- 
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68