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UHCI Kernel Panic on Acer Travelmate 290

From: Andreas Kohn <andreas.kohn@xxxxxxxxx>
Date: Tue, 7 Dec 2004 12:16:12 +0100


Yesterday I had the chance to try DF (2004-11-15 2CSNAP, ... I know,
old) on an Acer Travelmate 290.

Got this panic (manually transcribed):

. ..
uhci0: <Intel 82801DB (ICH4) USB Controller USB-A> port 0x1200-0x121f
at device 29.0 on pci0

Fatal trap 12: page fault while in kernel mode

fault virtual address = 0xe7e02
fault code               = supervisor read, page not present
instruction pointer = 0x8:0xc00e9d05
stack pointer = 0x10:0xc062db10
frame pointer = 0x10:0xc062db10
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 (swapper)
current thread = pri 12
interrupt mask = net tty bio cam
kernel = type 12, code 0
stopped at 0xc00e9d05 cmpb %cs:0x1(%esi), %bl
db> where
kernbase (cc98b620, c0415cea, c062dbc4, 50a, e8) at 0xc00e9d05
_end(cb9d08c4, c4f6ec8b, 81067540, ffffe5, e67f2400) at 0xc062db7c

With verbose mode, there was only one additional line between uhci0
and the panic about
pci_cfg_intr_virgin(?) using routable interrupt 5.
Same panic.

With enabled ACPI, the machine froze after printing
acpi0: <INSYDE RSDT_000> on motherboard
installed MI handler for int 9

Machine in question is Acer Travelmate 290 with Pentium M 1400, 512M ram. 
I assume the panic comes from the strange way the CD-ROM drive is
attached. It's removable and apparently connected via USB.

Anyways, unfortunately I will not be able to do any other testing on
this machine, so this is merely an FYI, perhaps someone sees something
Sorry for not being more helpful.


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