Date: Fri, 31 May 2013 16:45:53 -0700 From: Sean Bruno <sean_bruno@yahoo.com> To: "Justin T. Gibbs" <gibbs@scsiguy.com> Cc: "FreeBSD-scsi@freebsd.org" <FreeBSD-scsi@freebsd.org> Subject: Re: ahd(4) reliable panic Message-ID: <1370043953.1300.0.camel@localhost> In-Reply-To: <838492F2-0197-4279-8397-ED4C0F320941@scsiguy.com> References: <1370013140.1347.1.camel@localhost> <D0079385-4C40-40E9-A53E-4A26AFA536F0@scsiguy.com> <1370026659.2163.1.camel@localhost> <838492F2-0197-4279-8397-ED4C0F320941@scsiguy.com>
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--=-tTAm7UbKv4tZ19gAYOwz Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable On Fri, 2013-05-31 at 13:52 -0600, Justin T. Gibbs wrote:=20 > On May 31, 2013, at 12:57 PM, Sean Bruno <sean_bruno@yahoo.com> wrote: >=20 > > On Fri, 2013-05-31 at 09:23 -0600, Justin T. Gibbs wrote: > >> On May 31, 2013, at 9:12 AM, Sean Bruno <sean_bruno@yahoo.com> wrote: > >>=20 > >>> ports building seems to be able to panic ahd(4) pretty reliably. > >>>=20 > >>>=20 > >>>> db> whe > >>>> Tracing pid 12 tid 100040 td 0xfffffe0015b53000 > >>>> ahd_freeze_devq() at ahd_freeze_devq+0x16/frame 0xffffff800039da60 > >>>> ahd_handle_seqint() at ahd_handle_seqint+0xf11/frame 0xffffff800039d= b00 > >>>> ahd_platform_intr() at ahd_platform_intr+0x242/frame 0xffffff800039d= b20 > >>>> intr_event_execute_handlers() at intr_event_execute_handlers+0xfd/fr= ame 0xffffff800039db50 > >>>> ithread_loop() at ithread_loop+0x9b/frame 0xffffff800039dba0 > >>>> fork_exit() at fork_exit+0x11f/frame 0xffffff800039dbf0 > >>>> fork_trampoline() at fork_trampoline+0xe/frame 0xffffff800039dbf0 > >>>> --- trap 0, rip =3D 0, rsp =3D 0xffffff800039dcb0, rbp =3D 0 --- > >>>=20 > >>> This looks like a symptom that was reported in a lot of PR reports. = =20 > >>>=20 > >>> I'm assuming that I need more information? > >>>=20 > >>> Sean > >>=20 > >> The panic string would be useful. So might the msgbuf output. > >>=20 > >> -- > >> Justin > >=20 > >=20 > > Full dmesg from boot, then everything that melts down until the panic. = =20 > >=20 > > http://people.freebsd.org/~sbruno/package12.log > >=20 > > sean >=20 > Can you attempt to reproduce this with AHD_REG_PRETTY_PRINT > enabled in your kernel? >=20 Will do. =20 > Also, do you still have the panic string? >=20 > -- > Justin Huh, I didn't do a good job of showing the panic. Sorry about that. Fatal trap 12: page fault while in kernel mode=20 cpuid =3D 2; apic id =3D 02 fault virtual address =3D 0x0 fault code =3D supervisor read data, page not present instruction pointer =3D 0x20:0xffffffff803f5ec6 stack pointer =3D 0x28:0xffffff800039da40 frame pointer =3D 0x28:0xffffff800039da60 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 12 (irq30: ahd0) [ thread pid 12 tid 100040 ] Stopped at ahd_freeze_devq+0x16: movq (%rsi),%rax db> [-- sbruno@conserver.nyi.freebsd.org attached -- Fri May 31 15:09:31 20= 13] db>=20 db>=20 db> last No such command db> whe Tracing pid 12 tid 100040 td 0xfffffe0015b53000 ahd_freeze_devq() at ahd_freeze_devq+0x16/frame 0xffffff800039da60 ahd_handle_seqint() at ahd_handle_seqint+0xf11/frame 0xffffff800039db00 ahd_platform_intr() at ahd_platform_intr+0x242/frame 0xffffff800039db20 intr_event_execute_handlers() at intr_event_execute_handlers+0xfd/frame 0xf= fffff800039db50 ithread_loop() at ithread_loop+0x9b/frame 0xffffff800039dba0 fork_exit() at fork_exit+0x11f/frame 0xffffff800039dbf0 fork_trampoline() at fork_trampoline+0xe/frame 0xffffff800039dbf0 --- trap 0, rip =3D 0, rsp =3D 0xffffff800039dcb0, rbp =3D 0 --- db> reset cpu_reset: Restarting BSP cpu_reset_proxy: Stopped CPU 2 --=-tTAm7UbKv4tZ19gAYOwz Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (FreeBSD) iQEcBAABAgAGBQJRqTYnAAoJEBkJRdwI6BaHJwsH/iXG/+TPNLD4icSXShlUaRMe 7uPEG8BSWwh2yNX+dCC0gnDrZC4e3ZgDfwiSFRZktrHaLd/DpvS2POfswwtrfxQ2 vkrt9Ur7tNgEotz19qJZ7TrbjNjIasVvE7YjrKMxpEAfOETkPfw7AOlwXQ5qUwRy PM0vLa5QPbOmCMMp0RjsC9pvUFLBLxs9K3lNjtuK/2IcbReVH6i0syB4mQpOD0dN k8zau/k4bRRM2X6HwWcs2n+vHBjsBoQqFBMMiQR9Zo3GH2njI58quk0XqSyFUrGc +yjbQe+d8qYeAE7fIWkSuJ5oUo5mLXLPS23VDBn7SfGvDynfE9VKX6Tt7kdIaMU= =svXn -----END PGP SIGNATURE----- --=-tTAm7UbKv4tZ19gAYOwz--
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