From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jann Horn <jann@thejh.net>
Subject: Re: wtf bug of the day.
Date: Sat, 29 Jun 2013 08:31:29 +0200
Message-ID: <20130629063129.GD13813@debjann.fritz.box>
References: <20130629022420.GA20808@redhat.com>
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On Fri, Jun 28, 2013 at 10:24:20PM -0400, Dave Jones wrote:
> I've beem holding off on cutting a new release of trinity until I've nail=
ed
> this one last bug[1].
>=20
> When it happens, the watchdog process is in Z state, and the child proces=
ses
> are all blocked on sockets (and no progress is made because the watchdog =
died).
>=20
> In the one case I've managed to catch a core from the watchdog, it makes =
no damn sense..
>=20
> Program terminated with signal 8, Arithmetic exception.
> #0  check_shm_sanity () at watchdog.c:47
> 	if (shm->running_childs =3D=3D 0)
>=20
> what the hell does that even mean ?
>=20
> 'shm' is valid, shm->running_childs is '4'.
>=20
> Any ideas ?

Could you post the disassembly of that functioni (including start address)?=
 Also, in case
you still have the coredump, could you post the exact address at which the =
error occured?

That signal is usually only triggered by errors with floating-point errors,=
 but maybe
trinity somehow ended up doing a kill(watchdog, 8) acidentially? I'm not ve=
ry familia with
trinity, so I don't know whether that's possible.

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