Panic in tulip_txprobe

[Bernd Walter]

Recent -current.
September -current worked fine.

FreeBSD/alpha SRM disk boot, Revision 1.2
(ticso at cicely4.cicely.de, Tue Dec 20 14:18:06 CET 2005)
Memory: 655360 k
Loading /boot/defaults/loader.conf 
/boot/kernel/kernel data=0x384220+0x1d8c0 syms=[0x8+0x49a40+0x8+0x3ded8]

Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel]...               
Entering /boot/kernel/kernel at 0xfffffc000033bfa0...
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD 7.0-CURRENT #0: Tue Dec 20 22:41:07 CET 2005
    ticso at cicely4.cicely.de:/usr/obj/var/d21/builder/c4-2005-12-20/src/sys/CICELY4
AlphaStation 500 or 600 (KN20AA)
Digital AlphaStation 600 5/266, 266MHz
8192 byte page size, 1 processor.
CPU: EV5 (21164) major=5 minor=0
OSF PAL rev: 0x1000000020116
real memory  = 668778496 (637 MB)
avail memory = 648364032 (618 MB)
cia0: <2117x Core Logic chipset>
cia0: ALCOR/ALCOR2, pass 2
pcib0: <2117x PCI host bus adapter> on cia0
pci0: <PCI bus> on pcib0
pcib1: <PCI-PCI bridge> at device 8.0 on pci0
pci1: <PCI bus> on pcib1
de0: <Digital 21040 Ethernet> mem 0x80222000-0x8022207f irq 16 at device 0.0 on pci1
de0: DEC 21040 [10Mb/s] pass 2.3

fatal kernel trap:

    trap entry     = 0x2 (memory management fault)
    cpuid          = 0
    faulting va    = 0x0
    type           = access violation
    cause          = load instructon
    pc             = 0xfffffc000053e7c8
    ra             = 0xfffffc000053e7ac
    sp             = 0xfffffc00007318a0
    usp            = 0x0
    curthread      = 0xfffffc00006896d8
        pid = 0, comm = swapper

[thread pid 0 tid 0 ]
Stopped at      tulip_txprobe+0x68:     ldq     t0,0(t0) <0x0>  <t0=0x0>
db> trace
Tracing pid 0 tid 0 td 0xfffffc00006896d8
tulip_txprobe() at tulip_txprobe+0x68
tulip_media_poll() at tulip_media_poll+0x488
tulip_media_select() at tulip_media_select+0x104
tulip_reset() at tulip_reset+0x32c
tulip_attach() at tulip_attach+0x1e4
tulip_pci_attach() at tulip_pci_attach+0xc74
device_attach() at device_attach+0x88
device_probe_and_attach() at device_probe_and_attach+0x13c
bus_generic_attach() at bus_generic_attach+0x28
pci_attach() at pci_attach+0xdc
device_attach() at device_attach+0x88
device_probe_and_attach() at device_probe_and_attach+0x13c
bus_generic_attach() at bus_generic_attach+0x28
pcib_attach() at pcib_attach+0x68
device_attach() at device_attach+0x88
device_probe_and_attach() at device_probe_and_attach+0x13c
bus_generic_attach() at bus_generic_attach+0x28
pci_attach() at pci_attach+0xdc
device_attach() at device_attach+0x88
device_probe_and_attach() at device_probe_and_attach+0x13c
bus_generic_attach() at bus_generic_attach+0x28
device_attach() at device_attach+0x88
device_probe_and_attach() at device_probe_and_attach+0x13c
bus_generic_attach() at bus_generic_attach+0x28
cia_attach() at cia_attach+0x190
device_attach() at device_attach+0x88
device_probe_and_attach() at device_probe_and_attach+0x13c
root_bus_configure() at root_bus_configure+0x38
configure() at configure+0x18
mi_startup() at mi_startup+0x144
locorestart() at locorestart+0x64
--- root of call graph ---

-- 
B.Walter                   BWCT                http://www.bwct.de
bernd at bwct.de                                  info at bwct.de