Date: Thu, 16 May 1996 06:53:45 -0700 From: erich@uruk.org To: freebsd-bugs@freebsd.org Cc: erich@uruk.org Subject: Post 2.1.0 FreeBSD bug in PCI code ?? Message-ID: <199605161353.GAA20179@uruk.org>
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I think there is a systematic problem with any version of FreeBSD after
2.1.0 I've tried. (I've tried most of the 2.2-SNAP releases and they
all exhibit this behavior)
When running on a PC with multiple PCI buses (and the EISA bus bring
bridged off of a PCI bus), buring the boot sequence, the machine crashes
with a page fault that always looks very similar (I hadn't carefully
written down the dump message from the earlier versions).
I've tried this on both an Intel Xtended Xpress (Pentium CPUs) and Intel
Alder (Pentium Pro CPUs). They have different chipsets, and are known
to work with other OSes just fine. They even work with 2.1.0 correctly.
A Pentium-Pro machine with the same chipset, but one PCI bus (and no
EISA bridge) works fine.
I wrote down the error message from 2.2-960501-SNAP. This occurs when
trying "boot.flp".
I will probably try to get the source code and do a real debug run of this
at some point soon...
---------------------------(error message)--------------------------
avail memory = 61763584 (60316K bytes)
eisa0: <INT31c0 (System Board)>
Probing for devices on the EISA bus
ep0: <3Com 3C579-TP EISA Network Adapter> at 0x3000-0x300f, 0x3c80-0x3c89 irq 5
ep0: on eisa0 slot 3
ep0: aui/utp[*AUI*] address 00:20:af:0b:7e:e0
Probing for devices on PCI bus 0:
chip0 <Intel 82375EB PCI-EISA bridge> rev 5 on pci0:14:0
pci0:15:0: Intel Corporation, device 0x0008, class=0xff
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x16d0d16c
fault code = supervisor read, page not present
instruction pointer = 0x8:0xf016d1aa
stack pointer = 0x10:0xefbfff0c
frame pointer = 0x10:0xefbfff1c
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 0 ()
interrupt mask = net tty bio
panic: page fault
---------------------------(error message)--------------------------
--
Erich Stefan Boleyn \_ E-mail (preferred): <erich@uruk.org>
Mad Genius wanna-be, CyberMuffin \__ (finger me for other stats)
Web: http://www.uruk.org/~erich/ Motto: "I'll live forever or die trying"
This is my home system, so I'm speaking only for myself, not for Intel.
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