Re: modem-manager hangs while starting up

[Dan Williams <dcbw redhat com>]

On Mon, 2012-07-16 at 20:31 +0200, richter ecos de wrote:
> Hi,
> 
> it was not crashing, but simply doing nothing anymore (not detect any modem at all). It waits forever inside of poll and the backtrace Harald sent, was the place where the poll occurs.

Ah right, yeah.  Missing udev rules would do that.  So nevermind about
my question :)

Dan

> Hope this clarifies things a bit
> 
> Gerald
> 
> 
> > -----Original Message-----
> > From: Dan Williams [mailto:dcbw redhat com]
> > Sent: Monday, July 16, 2012 8:23 PM
> > To: Harald Jung
> > Cc: networkmanager-list gnome org
> > Subject: Re: modem-manager hangs while starting up
> > 
> > On Thu, 2012-07-12 at 09:07 +0200, Harald Jung wrote:
> > > Hi,
> > >
> > > finally the reason was the missing udev rule 80-mm-candidate.rules
> > 
> > Odd, ideally MM shouldn't be crashing there.  So that file was simply missing?
> > If that's the case, I'll test that and see if I can get the crash.
> > 
> > Dan
> > 
> > >
> > > Harald
> > >
> > > Am Dienstag, den 03.07.2012, 20:35 +0000 schrieb Harald Jung:
> > > > okay .. i got the debugging symbols, but:
> > > >
> > > > (gdb) bt
> > > > #0  0xa3455c81 in poll () from /lib/libc.so.6
> > > > #1  0xa35361b0 in g_poll () from /usr/lib/libglib-2.0.so.0
> > > > #2  0x00000011 in ?? ()
> > > > #3  0xffffffff in ?? ()
> > > > #4  0xa356c775 in g_mutex_unlock () from /usr/lib/libglib-2.0.so.0
> > > > #5  0xb044ca04 in ?? ()
> > > > Backtrace stopped: previous frame inner to this frame (corrupt
> > > > stack?)
> > > >
> > > > :(
> > > >
> > > > Am Dienstag, den 03.07.2012, 20:21 +0000 schrieb Dan Williams:
> > > > > On Tue, 2012-07-03 at 21:44 +0200, Harald Jung wrote:
> > > > > > strange thing.. i've used the unstripped version and i get:
> > > > > >
> > > > > > GNU gdb (Gentoo 7.3.1 p2) 7.3.1
> > > > > > .......blah.....
> > > > > > Reading symbols from /tmp/modem-manager...(no debugging
> > symbols
> > > > > > found)...done.
> > > > > >
> > > > > > is there a special configure or Makefile hook?
> > > > >
> > > > > Not specifically, but you could use CFLAGS including "-g -O0" to
> > > > > build the debugging into and turn off optimization.  That's
> > > > > usually enough to get at least function names in the stack traces.
> > > > >
> > > > > Dan
> > > > >
> > > > > >
> > > > > > Harald
> > > > > >
> > > > > > Am Dienstag, den 03.07.2012, 19:30 +0000 schrieb Dan Williams:
> > > > > > > Any chance you could get some debug symbols there?
> > > > > > >
> > > > > > > Dan
> > > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
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> > > >
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> > >
> > 
> 
>