[cups-devel] Add printer, pam with libprelude, core-dump/ANOM_ABEND

[tjoen]

On Mon, 2017-02-27 at 22:30 +0100, Helge Blischke wrote:
> > Am 27.02.2017 um 20:13 schrieb tjoen <tjoen at dds.nl>:
> > 
> > #0  0x00007ffff507c07f in raise () from /lib/libc.so.6
> > > #1  0x00007ffff507d4aa in abort () from /lib/libc.so.6
> > > #2  0x00007ffff37a20a6 in _prelude_thread_deinit () at \
> > >         prelude-thread.c:84
> > > #3  0x00007ffff378f3af in prelude_deinit () at prelude.c:268
> > > #4  0x00007ffff744a71f in prelude_send_alert \
> > >         (pamh=pamh at entry=0x555555853be0, 
> > >     authval=authval at entry=0) at pam_prelude.c:450
> > > #5  0x00007ffff74451f3 in pam_authenticate (pamh=0x555555853be0, 
> > >     flags=<optimized out>) at pam_auth.c:45
> > 
> > With --enable-debug (default is no) in Linux-PAM I get
> > 
> > #0  0x00007ffff507607f in raise () from /lib/libc.so.6
> > #1  0x00007ffff50774aa in abort () from /lib/libc.so.6
> > #2  0x00007ffff379c0a6 in _prelude_thread_deinit () at \
> > 	prelude-thread.c:84
> > #3  0x00007ffff37893af in prelude_deinit () at prelude.c:268
> > #4  0x00007ffff744792f in prelude_send_alert \
> > 	(pamh=pamh at entry=0x55555583c2a0, 
> >     authval=authval at entry=0) at pam_prelude.c:450
> > #5  0x00007ffff743f88c in pam_authenticate (pamh=0x555550583c2a0, 
> >     flags=<optimized out>) at pam_auth.c:45
> > 
> > How do I get rid of that "<optimized out>" ?
> > 
> > > #6  0x0000555555560c99 in cupsdAuthorize (con=0x555555839630) at
> > > \
> > >         auth.c:616

> First, I’d edit the Makefile (after running configure) and reduce the
> optimizing number by one
> (repeat this until the „optimized out“ disappears).
> If that does not help, ask your gcc for special options concerning
> optimizing
> (maybe: gcc —help=optimizers). Depending on the gcc release, there
> should be an option to 
> skip the „dead code eliminator“.

I looked at the source of #6 and found that the value of the flags
is PAM_SILENT see /usr/include/security/_pam_types.h
I did a grep for pam_authenticate in sources of shadow-utils
and the value of the flags there is 0=PAM_SUCCESS

Could that be the difference?