Date: Mon, 25 Mar 1996 18:21:40 -0500 (EST) From: Andrew Gallatin <gallatin@isds.Duke.EDU> To: current@freebsd.org Subject: 2.2-960323-SNAP: ibcs2 panic Message-ID: <199603252321.SAA25594@davinci.isds.duke.edu>
next in thread | raw e-mail | index | archive | help
Hi,
I'm managing to reliably crash a 486sx25 by running WP6.0 for SCO.
I'm running the 2.2-960323-SNAP.
When running a kernel built with the 'normal' fp emulator, many ibcs2
& linux programs (like xwp & executor) die with some sort of math
error (I get messages like: Unknown math-insns: 001f:005b8ffb 038d).
So as a work around for this, I built a kernel with GPL_MATH_EMULATE
in place of MATH_EMULATE. This makes executor work, but xwp panics.
I don't think the gpl math emulator is directly responsible for the
problem because I managed to panic the machine in a similar way
running another WP60 program.
I've appended a stack trace of the crash for your examination.
I'm hoping to find out if the ibcs2 stuff is currently broken, or if
my problems are simply a result of the junk hardware I'm running on.
If this crash is a result of the 486sx, that's wonderful news; I need
this to work on a couple of P90s..
Just as background info - I'm in a situation where I have been running
BSD/OS, but the university cash cow that had been paying for the
license decided not to renew the site license this year. I'm hoping
to replace BSD/OS with FreeBSD on our departmental machines & the home
machines of profs & grad students here. I absolutely have to have
ibcs2 working on a few of our PCs (mainly for WP), so that's why I'm
attempting to run -current. I'm making a dry run with this junk
486sx25 because its the only box I can tie up for a week or two while
I see if the conversion is feasable yet.
FYI - I know NetBSD quite well. I currently run NetBSD/i386 at home &
NetBSD/pmax on a few DECstations here; but I'd like to use FreeBSD for
our Intel boxes because of your installation process. I can hand a
stats prof a CD & have her install it at home, I just can't do that
with NetBSD. This is a huge win.
Drew
PS: I'm the guy who asked about NFSv3 at the USENIX FreeBSD BOF. So far,
your NFSv3 seems to be interoperating just fine with my alphas (DU
3.2c).
##############################################################################
# Andrew Gallatin, Computer Project Manager #
# Institute of Statistics and Decision Sciences #
# Box 90251, Duke University, Durham, NC 27708-0251 #
##############################################################################
% gdb -k
GDB is free software and you are welcome to distribute copies of it
under certain conditions; type "show copying" to see the conditions.
There is absolutely no warranty for GDB; type "show warranty" for details.
GDB 4.13 (i386-unknown-freebsd), Copyright 1994 Free Software Foundation, Inc.
(kgdb) symbol-file /sys/compile/SCRAPIRON/kernel
Reading symbols from /sys/compile/SCRAPIRON/kernel...done.
(kgdb) exec-file kernel.0
(kgdb) core-file vmcore.0
IdlePTD 1f7000
current pcb at 1cd98c
panic: from debugger
#0 boot (howto=256) at ../../i386/i386/machdep.c:935
935 dumppcb.pcb_ptd = rcr3();
(kgdb) bt
#0 boot (howto=256) at ../../i386/i386/machdep.c:935
#1 0xf0115827 in panic (fmt=0xf01011f8 "from debugger")
at ../../kern/subr_prf.c:130
#2 0xf0101215 in db_panic (dummy1=1, dummy2=0, dummy3=-1,
dummy4=0xefbffd8b "") at ../../ddb/db_command.c:395
#3 0xf01010fe in db_command (last_cmdp=0xf01bdb44, cmd_table=0xf01bd9a4)
at ../../ddb/db_command.c:288
#4 0xf010127d in db_command_loop () at ../../ddb/db_command.c:417
#5 0xf01035e8 in db_trap (type=12, code=0) at ../../ddb/db_trap.c:73
#6 0xf0190dfa in kdb_trap (type=12, code=0, regs=0xefbffee3)
at ../../i386/i386/db_interface.c:136
#7 0xf0198ef7 in trap_fatal (frame=0xefbffee3) at ../../i386/i386/trap.c:754
#8 0xf0198a74 in trap_pfault (frame=0xefbffee3, usermode=0)
at ../../i386/i386/trap.c:680
#9 0xf01986af in trap (frame={tf_es = 16, tf_ds = 16, tf_edi = 14,
tf_esi = -212479704, tf_ebp = -272629936, tf_isp = -272630005,
tf_ebx = -262016000, tf_edx = 1853783807, tf_ecx = 8192, tf_eax = 0,
tf_trapno = 12, tf_err = 65539, tf_eip = 1, tf_cs = 285081608,
tf_eflags = 66195, tf_esp = 285811443, tf_ss = 35753200})
at ../../i386/i386/trap.c:319
#10 0xf0191661 in calltrap ()
#11 0xf01992dc in syscall (frame={tf_es = 4259879, tf_ds = -272695257,
tf_edi = 0, tf_esi = 0, tf_ebp = -272639340, tf_isp = -272629788,
tf_ebx = 0, tf_edx = 140273, tf_ecx = 0, tf_eax = 4, tf_trapno = 12,
tf_err = 7, tf_eip = 140080, tf_cs = 31, tf_eflags = 663,
tf_esp = -272639396, tf_ss = 39}) at ../../i386/i386/trap.c:144
#12 0xf01916b5 in Xsyscall ()
#13 0x7cd in ?? ()
#14 0x10f in ?? ()
(kgdb) quit
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199603252321.SAA25594>