Kernel built with new GCC panics immediately
truckman at FreeBSD.org
Fri Jul 11 11:44:51 PDT 2003
On 11 Jul, Shizuka Kudo wrote:
> --- Lukas Ertl <l.ertl at univie.ac.at> wrote:
>> Hi there,
>> just wanted to report that a kernel built with the new gcc panics
>> immediately when booting. I've seen this on two machines. Panic and reboot
>> happens fast that I couldn't get the panic message.
> Same here for an AMD Athlon & a Pentium III. The panic message for AMD is:
> Copyright (c) 1992-2003 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 5.1-CURRENT #20030712: Sat Jul 12 01:35:44 HKT 2003
> root at shizuka.gundumv.com:/usr/obj/usr/src/sys/SHIZUKA
> Preloaded elf kernel "/boot/kernel/kernel" at 0xc058a000.
> Preloaded elf module "/boot/kernel/acpi.ko" at 0xc058a1f4.
> Timecounter "i8254" frequency 1193182 Hz
> CPU: AMD Unknown (286-class CPU)
That's quite a downgrade ;-)
This smells like a problem in either printcpuinfo(), lowcore.s, or the
interface between them.
> Origin = "AuthenticAMD" Stepping = 0
> panic: CPU class not configured
> Stopped at Debugger+0x54: xchgl %ebx,in_Debugger.0
> db> trace
> Debugger(c03f6b71,c0470000,c0408af7,c05acd4c,100) at Debugger+0x54
> panic(c0408af7,c05acd80,c03aaff7,c0262967,c0577880) at panic+0xd5
> panicifcpuunsupported(c0262967,c0577880,0,c040705f,c05acd68) at panicifcpuunsup
> cpu_startup(0,5a9000,5a9c00,5a9000,0) at cpu_startup+0x17
> mi_startup() at mi_startup+0xb5
> begin() at begin+0x2c
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