Re: Stuck CLOSED sockets / sshd / zombies...
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On Wed, Apr 09, 2014 at 03:30:44PM +0100, Karl Pielorz wrote:
>=20
>=20
> --On 09 April 2014 14:19 +0300 Konstantin Belousov <kostikbel@gmail.com>=
=20
> wrote:
>=20
> > It is still mostly nonsensical, due to bad and missing debugging
> > information.
> >
> > First, my patch seems to be buggy, I miscalculated the offsets of the
> > saved registers. Hopefully, improved version is at the end of the
> > message. Also, I suspect that there is a mismatch between installed and
> > built rtld. Please do the clean build with DEBUG_FLAGS=3D-g and patch
> > applied and install (again with DEBUG_FLAGS=3D-g).
> >
> > Second, the debugging information in your libthr.so.3 is partial.
> > Could you, please rebuild it and install with DEBUG_FLAGS=3D-g from
> > the clean state ?
> >
> > Also, please rebuild you pam installation with '-g'.
> >
> > After this is done, reproduce the issue and take the backtrace once mor=
e.
> > Sorry, but the current backtrace is not useful.
>=20
> Ok, I tried all the above - I now get a minimal backtrace :(
I just rechecked with in-tree gdb and stock build of gdb 7.6,
I can see frames after _rtld_bind_start() properly.
>=20
> I have an identical 'clone' of this system (with the same issue) - is the=
re=20
> something I can put in '/etc/make.conf' and rebuild the world [with your=
=20
> patch] with debug stuff enabled everywhere, on that clone?
You should put DEBUG_FLAGS=3D-g either in make.conf or src.conf,
I am not sure which one is correct.
>=20
> It may be easier to rebuild with debug on everything, install it all, and=
=20
> reproduce the issue (knowing debug is on everywhere). I can do that leavi=
ng=20
> the other copy of this machine 'as-is'.
>=20
> Also, if we're doing that is it worth turning off optimisation's? (If so,=
=20
> how?)
No.
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