Getting backtraces from services without crash dialog

[Austin English]

Howdy all,

I asked this in #winehackers, but got no reply.

I have a program:

http://www.cressi.com/software
http://www.cressi.com/easyUp/software/CressiPcInterface_2_0_1_37_Installer.z...

that installs some device drivers that crash when it is starting up.
If I have the crash dialog enabled, I can save their backtraces. If I
disable it, all I see is something like:
wine: Unhandled page fault on write access to 0x0078d000 at address
0x7bc55e7f (thread 00a1), starting debugger...

Is there some way for me to get the backtraces to print to a console
(either of the first wine process or of the later running programs? If
the dialog is enabled, there are several crashes, which makes that
inconvenient.

Thanks!

[Vincent Povirk]

I haven't tried this, but my suggestion would be to replace the
WriteFile in dbg_outputA with a call to wine_dbg_printf, something
like:

wine_dbg_printf("%.*s", i, line_buff);

On Tue, Sep 6, 2016 at 7:18 PM, Austin English  wrote:
> Howdy all,
>
> I asked this in #winehackers, but got no reply.
>
> I have a program:
>
> http://www.cressi.com/software
> http://www.cressi.com/easyUp/software/CressiPcInterface_2_0_1_37_Installer.z...
>
> that installs some device drivers that crash when it is starting up.
> If I have the crash dialog enabled, I can save their backtraces. If I
> disable it, all I see is something like:
> wine: Unhandled page fault on write access to 0x0078d000 at address
> 0x7bc55e7f (thread 00a1), starting debugger...
>
> Is there some way for me to get the backtraces to print to a console
> (either of the first wine process or of the later running programs? If
> the dialog is enabled, there are several crashes, which makes that
> inconvenient.
> Thanks!
>
> -Austin
> GPG: 14FB D7EA A041 937B

[Austin English]

On Wed, Sep 7, 2016 at 8:18 PM, Vincent Povirk  wrote:
> I haven't tried this, but my suggestion would be to replace the
> WriteFile in dbg_outputA with a call to wine_dbg_printf, something
> like:
>
> wine_dbg_printf("%.*s", i, line_buff);
>
> On Tue, Sep 6, 2016 at 7:18 PM, Austin English  wrote:
> > Howdy all,
> >
> > I asked this in #winehackers, but got no reply.
> >
> > I have a program:
> >
> > http://www.cressi.com/software
> > http://www.cressi.com/easyUp/software/CressiPcInterface_2_0_1_37_Installer.z...
> >
> > that installs some device drivers that crash when it is starting up.
> > If I have the crash dialog enabled, I can save their backtraces. If I
> > disable it, all I see is something like:
> > wine: Unhandled page fault on write access to 0x0078d000 at address
> > 0x7bc55e7f (thread 00a1), starting debugger...
> >
> > Is there some way for me to get the backtraces to print to a console
> > (either of the first wine process or of the later running programs? If
> > the dialog is enabled, there are several crashes, which makes that
> > inconvenient.
> > Thanks!
> >
> > -Austin
> > GPG: 14FB D7EA A041 937B

Thanks Vincent.

The backtraces were interspersed with fixme's (not unexpected), but
other than that, worked great, thanks.

[Austin English]

On Wed, Sep 7, 2016 at 8:40 PM, Austin English  wrote:
> On Wed, Sep 7, 2016 at 8:18 PM, Vincent Povirk  wrote:
> > I haven't tried this, but my suggestion would be to replace the
> > WriteFile in dbg_outputA with a call to wine_dbg_printf, something
> > like:
> >
> > wine_dbg_printf("%.*s", i, line_buff);
> >
> > On Tue, Sep 6, 2016 at 7:18 PM, Austin English  wrote:
> > > Howdy all,
> > >
> > > I asked this in #winehackers, but got no reply.
> > >
> > > I have a program:
> > >
> > > http://www.cressi.com/software
> > > http://www.cressi.com/easyUp/software/CressiPcInterface_2_0_1_37_Installer.z...
> > >
> > > that installs some device drivers that crash when it is starting up.
> > > If I have the crash dialog enabled, I can save their backtraces. If I
> > > disable it, all I see is something like:
> > > wine: Unhandled page fault on write access to 0x0078d000 at address
> > > 0x7bc55e7f (thread 00a1), starting debugger...
> > >
> > > Is there some way for me to get the backtraces to print to a console
> > > (either of the first wine process or of the later running programs? If
> > > the dialog is enabled, there are several crashes, which makes that
> > > inconvenient.
> > > Thanks!
> > >
> > > -Austin
> > > GPG: 14FB D7EA A041 937B
>
> Thanks Vincent.
>
> The backtraces were interspersed with fixme's (not unexpected), but
> other than that, worked great, thanks.
>
> --
> -Austin
> GPG: 14FB D7EA A041 937B

FYI, I documented this at https://wiki.winehq.org/Winedbg

Thanks again!