Date: Sun, 24 Dec 2017 15:16:59 +0100 From: Dimitry Andric <dimitry@andric.com> To: David Wolfskill <david@catwhisker.org> Cc: current <current@freebsd.org>, Warner Losh <imp@bsdimp.com> Subject: Re: Panic @ orm_identify+0x308 (kernel probes) after r327103 -> r327140 Message-ID: <FC1A3E5C-2B7E-42EF-BAE1-09DC96179F4B@andric.com> In-Reply-To: <20171224132710.GN1555@albert.catwhisker.org> References: <20171224132710.GN1555@albert.catwhisker.org>
next in thread | previous in thread | raw e-mail | index | archive | help
--Apple-Mail=_6A706B5A-3D91-4423-817B-719E0E1EC4D5
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
charset=us-ascii
On 24 Dec 2017, at 14:27, David Wolfskill <david@catwhisker.org> wrote:
>=20
> Had this on the laptop; fotunately, also got it on the build machine =
(as
> it's a lot easier to work with the serial console of the latter for
> this -- and it runs a GENERIC kernel):
...
> Fatal trap 9: general protection fault while in kernel mode
> cpuid =3D 2; apic id =3D 02
> instruction pointer =3D 0x20:0xffffffff81066968
> stack pointer =3D 0x28:0xffffffff82286a90
> frame pointer =3D 0x28:0xffffffff82286ad0
> code segment =3D base 0x0, limit 0xfffff, type 0x1b
> =3D DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags =3D interrupt enabled, resume, IOPL =3D 0
> current process =3D 0 (swapper)
> [ thread pid 0 tid 100000 ]
> Stopped at orm_identify+0x308: movq (%r14),%rax
> db> bt
> Tracing pid 0 tid 100000 td 0xffffffff81e94340
> orm_identify() at orm_identify+0x308/frame 0xffffffff82286ad0
> bus_generic_probe() at bus_generic_probe+0x74/frame 0xffffffff82286b00
> isa_probe_children() at isa_probe_children+0x19/frame =
0xffffffff82286b50
> mi_startup() at mi_startup+0x9c/frame 0xffffffff82286b70
> btext() at btext+0x2c
Since there is "isa" in the backtrace, I would consider r327120 ("Warn
when nonPNP ISA devices are attached in GENERIC that they are being
removed from GENERIC in 12") by Warner suspect...
Specifically, this change:
=
https://svnweb.freebsd.org/base/head/sys/x86/isa/orm.c?r1=3D327120&r2=3D32=
7119&pathrev=3D327120
-Dimitry
--Apple-Mail=_6A706B5A-3D91-4423-817B-719E0E1EC4D5
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename=signature.asc
Content-Type: application/pgp-signature;
name=signature.asc
Content-Description: Message signed with OpenPGP
-----BEGIN PGP SIGNATURE-----
Version: GnuPG/MacGPG2 v2.2
iF0EARECAB0WIQR6tGLSzjX8bUI5T82wXqMKLiCWowUCWj+22wAKCRCwXqMKLiCW
o4THAKDf4FGaImqP9nh+YpO1NHyPJTyixwCaA7yLv3QulxUJeMmpHTHJPnDA0DU=
=sUyi
-----END PGP SIGNATURE-----
--Apple-Mail=_6A706B5A-3D91-4423-817B-719E0E1EC4D5--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?FC1A3E5C-2B7E-42EF-BAE1-09DC96179F4B>