Date: Tue, 15 Jul 2008 22:51:29 +0300 From: Kostik Belousov <kostikbel@gmail.com> To: john@basicnets.co.uk Cc: freebsd-stable@freebsd.org Subject: Re: Fresh 7.0 Install: Fatal Trap 12 panic when put under load Message-ID: <20080715195129.GZ17123@deviant.kiev.zoral.com.ua> In-Reply-To: <20080715204703.1xshles8aogwksw4@mail.basicnets.co.uk> References: <854CADB9D95147CAB10BC35887A8E5DC@emea.hubersuhner.net> <20080715102135.GA18082@eos.sc1.parodius.com> <B23D0848E1304F719FEBDC3EDC54B914@emea.hubersuhner.net> <487C8486.1040904@FreeBSD.org> <20080715201915.8m5j3k1lw00k4gck@mail.basicnets.co.uk> <20080715193321.GX17123@deviant.kiev.zoral.com.ua> <20080715204703.1xshles8aogwksw4@mail.basicnets.co.uk>
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On Tue, Jul 15, 2008 at 08:47:03PM +0100, john@basicnets.co.uk wrote:
>=20
>=20
> >> #9=9A 0xffffffff8067d3ee in uma_zalloc_arg (zone=3D0xffffff00bfed07e=
0,
> >>udata=3D0x0,
> >>flags=3D-256) at /usr/src/sys/vm/uma_core.c:1835
> >From the frame #9, please do
> >p *zone
> >I am esp. interested in the value of the uz_ctor member.
> >
> >It seems that it becomes corrupted, it value should be 0, as this seems
> >to be ffs inode zone.=9A I suspect that gdb would show 0x6400000000 inst=
ead.
>=20
> I am afraid that you may need to spell out each step for me :-(
>=20
> (kgdb) p *zone
> No symbol "zone" in current context.
Do the "frame 9" before "p *zone".
> (kgdb) list *0xffffffff8067d3ee
> 0xffffffff8067d3ee is in uma_zalloc_arg (/usr/src/sys/vm/uma_core.c:1835).
> 1830=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=
=9A=9A=9A=9A=9A=9A=9A=9A ("uma_zalloc: Bucket pointer=20
> mangled."));
> 1831=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=
=9A=9A=9A=9A cache->uc_allocs++;
> 1832=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=
=9A=9A=9A=9A critical_exit();
> 1833=9A=9A=9A #ifdef INVARIANTS
> 1834=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=
=9A=9A=9A=9A ZONE_LOCK(zone);
> 1835=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=
=9A=9A=9A=9A uma_dbg_alloc(zone, NULL, item);
> 1836=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=
=9A=9A=9A=9A ZONE_UNLOCK(zone);
> 1837=9A=9A=9A #endif
> 1838=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=
=9A=9A=9A=9A if (zone->uz_ctor !=3D NULL) {
> 1839=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=
=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A=9A if (zone->uz_ctor(item, =20
> zone->uz_keg->uk_size,
>=20
> Is this that you were looking for?
No, see above.
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