[mythtv] Backend crash when tuning to an invalid channel with HD-PVR

[Ian Forde]

On Mon, 2011-02-21 at 16:14 -0500, Daniel Kristjansson wrote:
> On Mon, 2011-02-21 at 12:25 -0800, Ian Forde wrote:
> > I've finally gotten around to testing the scenario again where what I
> > thought was a valid channel on my cable lineup isn't recognized by my
> > DCT-6200.  Instead of tuning to channel 840 as requested, it tunes to
> > 847, which is not a channel that I currently receive.  Yes - that's a
> > lineup issue, but the thing is that the backend crashes.
> > 
> > So I followed the instructions on http://www.mythtv.org/wiki/Debugging
> > and got a backtrace... (pasted at the bottom)
> > 
> > For now I'm just going to remove the channels from my lineup, but I'm
> > hoping this helps somebody...
> 
> You are missing the part that tells us where the crash occurred. It
> should have told you which thread faulted when you loaded the coredump
> or when it crashed if you ran mythbackend under gdb.

That's strange, because I pasted the entire output from gdb from "thread
apply all bt".  I was under the impression that the info was in there.
Should I rebuild as a profile build and reproduce the crash?  Or would
the output from the backend log (of the crash earlier today) suffice?

	-I