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5.0RC3 fatal trap in supervisor mode


FWIW, I just connected a serial cable on a soekris net4501 running
5.0RC3, booted a few minute ago. Surprisingly enough, I got a DDB

db{0}> dmesg
Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 5.0_RC3 (GENERIC) #0: Fri Mar 20 12:47:10 UTC 2009
total memory = 65148 KB
avail memory = 52364 KB
timecounter: Timecounters tick every 10.000 msec
timecounter: Timecounter "i8254" frequency 1193182 Hz quality 100
Generic PC
mainbus0 (root)
ACPI Error (tbxfroot-0308): A valid RSDP was not found [20080321]
ACPI: unable to initialize ACPI tables: AE_NOT_FOUND
cpu0 at mainbus0: AMD 486-class, id 0x494
fatal breakpoint trap in supervisor mode
trap type 1 code 0 eip c053c55c cs c63b0008 eflags 202 cr2 bbae1000 ilevel 8

db{0}> bt
breakpoint(0,3f8,5,c047654b,7,c63f9780,c63edf6c,c0f53000,c0f54000,800) at netbsd
aa55aa55,aa55aa55) at netbsd:comintr+0x575
DDB lost frame for netbsd:Xintr_legacy4+0xbb, trying 0xc63edf74
Xintr_legacy4() at netbsd:Xintr_legacy4+0xbb
--- interrupt ---
--- switch to interrupt stack ---
 at netbsd:x86_stihlt+0x5
idle_loop(c5fc7c80,0,c01002cd,0,c01002cd,0,0,0,0,0) at netbsd:idle_loop+0xe6

the comintr() args looks bogus, but I didn't dig more yet.

 - Arnaud

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