kernel: FreeBSD 4.8-STABLE #0: Mon Aug 25 19:26:01 CDT 2003
compiler: gcc version 2.95.4 20020320 [FreeBSD]
computer: IBM ThinkPad 600E
My /etc/make.conf file:
# This make.conf file nust have it's entries indented by one space
CFLAGS= -O -pipe
NOPROFILE= true
USA_RESIDENT= YES
HAVE_MOTIF= YES
NO_LPR= true # The CUPS printing system is installed
# eof
Hi:
My FreeBSD started crashing under heavy load about a week ago. I normally do
portupgrade while I am using Kde. This has not been a problem until recently.
To duplicate the conditions, I ran 3 Octave sessions, each inverting a
2000x2000 random floating point matrix (4,000,000 floats for each Octave
program). I also had Kde up and had portsd -Uu running at the same time.
Here is the kernel backtrace from the crash:
bash-2.05b$ gdb -k kernel.debug vmcore.0
GNU gdb 4.18 (FreeBSD)
<gdb info cut>
IdlePTD at phsyical address 0x0046e000
initial pcb at physical address 0x003b2320
panicstr: from debugger
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xe
fault code = supervisor write, page not present
instruction pointer = 0x8:0xca706cc3
stack pointer = 0x10:0xca706ba4
frame pointer = 0x10:0xca706ba0
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 = 15472 (sh)
interrupt mask = none
panic: from debugger
Fatal trap 3: breakpoint instruction fault while in kernel mode
instruction pointer = 0x8:0xc02e5a10
stack pointer = 0x10:0xca7069b8
frame pointer = 0x10:0xca7069c0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, IOPL = 0
current process = 15472 (sh)
interrupt mask = none
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xe
fault code = supervisor write, page not present
instruction pointer = 0x8:0xca706cc3
stack pointer = 0x10:0xca706ba4
frame pointer = 0x10:0xca706ba0
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 = 15472 (sh)
interrupt mask = none
panic: from debugger
Uptime: 38m9s
dumping to dev #ad/0x20001, offset 492512
dump ata0: resetting devices .. done
63 62 61 60 59 58 57 56 55 <snip>
I did a "where" and this is what I get:
(kgdb) where
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc01abda7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:316
#2 0xc01ac1e5 in panic (fmt=0xc031e8c4 "from debugger") at
/usr/src/sys/kern/kern_shutdown.c:595
#3 0xc0134f0d in db_panic (addr=-898601789, have_addr=0, count=-1,
modif=0xca706a34 "") at /usr/src/sys/ddb/db_command.c:435
#4 0xc0134ead in db_command (last_cmdp=0xc03703c0, cmd_table=0xc0370200,
aux_cmd_tablep=0xc03acdf8) at /usr/src/sys/ddb/db_command.c:333
#5 0xc0134f72 in db_command_loop () at /usr/src/sys/ddb/db_command.c:457
#6 0xc01370af in db_trap (type=12, code=0) at /usr/src/sys/ddb/db_trap.c:71
#7 0xc02e57c2 in kdb_trap (type=12, code=0, regs=0xca706b64) at
/usr/src/sys/i386/i386/db_interface.c:158
#8 0xc02f500c in trap_fatal (frame=0xca706b64, eva=14) at
/usr/src/sys/i386/i386/trap.c:969
#9 0xc02f4a1a in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16, tf_edi = 0,
tf_esi = -1069833940, tf_ebp = -898602080,
tf_isp = -898602096, tf_ebx = -898455944, tf_edx = -901929760, tf_ecx =
1, tf_eax = 14, tf_trapno = 12, tf_err = 2,
tf_eip = -898601789, tf_cs = 8, tf_eflags = 66118, tf_esp = -1071020156,
tf_ss = -898455944}) at /usr/src/sys/i386/i386/trap.c:636
#10 0xca706cc3 in ?? ()
#11 0xc0298784 in vm_fault (map=Cannot access memory at address 0x1024e.
) at /usr/src/sys/vm/vm_fault.c:292
Cannot access memory at address 0x10246.
(kgdb)
Any advice on what I may have misconfigured would be greatly appreciated. I
followed Michael Lucas' tutorial on preparing a kernel.debug here:
http://www.onlamp.com/pub/a/bsd/2002/04/04/Big_Scary_Daemons.html
As I say, the laptop worked great until about a week ago, when it
mysteriously locked up, while doing a portupgrade. Since then I get crashes
under heavy loads. I did a memtest and a system check and the laptop checked
out OK.
Kind regards
Jonathan
(a FreeBSD newbie)