I have
2 x Intel XEON 3.06 with 2GB RAM
system work stable wherefore upgrade 17 junuary 20005 FreeBSD-EN-05:03.ipi

but now I want to have 8GB RAM and I have new problem kernel fatal trap 12
any idea or solution?

kernel config is
----
machine i386
cpu I486_CPU
cpu I586_CPU
cpu I686_CPU
ident POWER8GBRAM

options PAE
device acpi

makeoptions NO_MODULES=yes

options SCHED_4BSD # 4BSD scheduler
options INET # InterNETworking
#options INET6 # IPv6 communications protocols
options FFS # Berkeley Fast Filesystem
options SOFTUPDATES # Enable FFS soft updates support
options UFS_ACL # Support for access control lists
options UFS_DIRHASH # Improve performance on big directories
options MD_ROOT # MD is a potential root device
options NFSCLIENT # Network Filesystem Client
options NFSSERVER # Network Filesystem Server
options NFS_ROOT # NFS usable as /, requires NFSCLIENT
options MSDOSFS # MSDOS Filesystem
options CD9660 # ISO 9660 Filesystem
options PROCFS # Process filesystem (requires PSEUDOFS)
options PSEUDOFS # Pseudo-filesystem framework
options GEOM_GPT # GUID Partition Tables.
options COMPAT_43 # Compatible with BSD 4.3 [KEEP THIS!]
options COMPAT_FREEBSD4 # Compatible with FreeBSD4
options SCSI_DELAY=10000 # Delay (in ms) before probing SCSI
options KTRACE # ktrace(1) support
options SYSVSHM # SYSV-style shared memory
options SYSVMSG # SYSV-style message queues
options SYSVSEM # SYSV-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
options AHC_REG_PRETTY_PRINT # Print register bitfields in debug
# output. Adds ~128k to driver.
options AHD_REG_PRETTY_PRINT # Print register bitfields in debug
# output. Adds ~215k to driver.
options ADAPTIVE_GIANT # Giant mutex is adaptive.

device apic # I/O APIC

options SMP

# Bus support. Do not remove isa, even if you have no isa slots

device isa
device eisa
device pci

# Floppy drives
device fdc

# ATA and ATAPI devices
device ata
device atadisk # ATA disk drives
device ataraid # ATA RAID drives
device atapicd # ATAPI CDROM drives
device atapifd # ATAPI floppy drives
device atapist # ATAPI tape drives
options ATA_STATIC_ID # Static device numbering

# SCSI Controllers
device ahd # AHA39320/29320 and onboard AIC79xx devices

# SCSI peripherals
device scbus # SCSI bus (required for SCSI)
device ch # SCSI media changers
device da # Direct Access (disks)
device sa # Sequential Access (tape etc)
device cd # CD
device pass # Passthrough device (direct SCSI access)
device ses # SCSI Environmental Services (and SAF-TE)

# RAID controllers interfaced to the SCSI subsystem
device amr # AMI MegaRAID

# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc # AT keyboard controller
device atkbd # AT keyboard
device psm # PS/2 mouse

device vga # VGA video card driver

device splash # Splash screen and screen saver support

# syscons is the default console driver, resembling an SCO console
device sc

device agp # support several AGP chipsets

# Floating point support - do not disable.
device npx

# Power management support (see NOTES for more options)
device apm
# Add suspend/resume support for the i8254.
device pmtimer
# Serial (COM) ports
device sio # 8250, 16[45]50 based serial ports

# Parallel port
device ppc
device ppbus # Parallel port bus (required)
device lpt # Printer
device plip # TCP/IP over parallel
device ppi # Parallel port interface device

# PCI Ethernet NICs.
device em # Intel PRO/1000 adapter Gigabit Ethernet Card

# Pseudo devices.
device loop # Network loopback
device mem # Memory and kernel memory devices
device io # I/O device
device random # Entropy device
device ether # Ethernet support
device sl # Kernel SLIP
device ppp # Kernel PPP
device tun # Packet tunnel.
device pty # Pseudo-ttys (telnet etc)
device md # Memory "disks"
device gif # IPv6 and IPv4 tunneling

# The `bpf' device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
device bpf # Berkeley packet filter

options QUOTA

options SYSVSHM
options SYSVSEM
options SYSVMSG
options SHMMAXPGS=65536
options SEMMNI=40
options SEMMNS=240
options SEMUME=40
options SEMMNU=12

options IPFIREWALL
options IPFIREWALL_VERBOSE
#options IPFIREWALL_FORWARD
options IPFIREWALL_VERBOSE_LIMIT=300
options IPFIREWALL_DEFAULT_TO_ACCEPT
options IPDIVERT

options TCP_DROP_SYNFIN
options DUMMYNET
------------------

dmesg with this kernel is:
---------
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 5.3-STABLE #4: Sat Jan 22 16:06:31 CET 2005
xxxx@bleble.pl:/usr/src/sys/i386/compile/POWER
ACPI APIC Table:
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Xeon(TM) CPU 3.06GHz (3065.81-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf29 Stepping = 9
Features=0xbfebfbff
Hyperthreading: 2 logical CPUs
real memory = 4160225280 (3967 MB)
avail memory = 4073287680 (3884 MB)
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 6
cpu3 (AP): APIC ID: 7
ioapic0 irqs 0-23 on motherboard
ioapic1 irqs 24-47 on motherboard
ioapic2 irqs 48-71 on motherboard
ioapic3 irqs 72-95 on motherboard
ioapic4 irqs 96-119 on motherboard
npx0: [FAST]
npx0: on motherboard
npx0: INT 16 interface
acpi0: on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0
cpu0: on acpi0
cpu1: on acpi0
cpu2: on acpi0
cpu3: on acpi0
pcib0: port 0xcf8-0xcff on acpi0
pci0: on pcib0
pci0: at device 0.1 (no driver attached)
pcib1: at device 2.0 on pci0
pci1: on pcib1
pci1: at device 28.0 (no driver attached)
pcib2: at device 29.0 on pci1
pci2: on pcib2
pci1: at device 30.0 (no driver attached)
pcib3: at device 31.0 on pci1
pci3: on pcib3
em0: port 0x3000-0x303f mem 0xfc200000-0xfc21ffff irq 28 at device 2.
0 on pci3
em0: Ethernet address: 00:30:48:2a:c8:18
em0: Speed:N/A Duplex:N/A
em1: port 0x3040-0x307f mem 0xfc220000-0xfc23ffff irq 29 at device 2.
1 on pci3
em1: Ethernet address: 00:30:48:2a:c8:19
em1: Speed:N/A Duplex:N/A
pcib4: at device 3.0 on pci0
pci4: on pcib4
pci4: at device 28.0 (no driver attached)
pcib5: at device 29.0 on pci4
pci5: on pcib5
amr0: mem 0xfe200000-0xfe20ffff irq 96 at device 1.0 on pci5
amr0: [GIANT-LOCKED]
amr0: Firmware 1L37, BIOS G119, 64MB RAM
pci4: at device 30.0 (no driver attached)
pcib6: at device 31.0 on pci4
pci6: on pcib6
ahd0: port 0x4000-0x40ff,0x4400-0x44ff mem 0xfc400000-0xfc401fff irq 76 at device 2.0
on pci6
ahd0: [GIANT-LOCKED]
aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 101-133Mhz, 512 SCBs
ahd1: port 0x4800-0x48ff,0x4c00-0x4cff mem 0xfc402000-0xfc403fff irq 77 at device 2.1
on pci6
ahd1: [GIANT-LOCKED]
aic7902: Ultra320 Wide Channel B, SCSI Id=7, PCI-X 101-133Mhz, 512 SCBs
uhci0: port 0x2000-0x201f irq 16 at device 29.0 on pci0
uhci0: [GIANT-LOCKED]
usb0: on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1: port 0x2020-0x203f irq 19 at device 29.1 on pci0
uhci1: [GIANT-LOCKED]
usb1: on uhci1
usb1: USB revision 1.0
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2: port 0x2040-0x205f irq 18 at device 29.2 on pci0
uhci2: [GIANT-LOCKED]
usb2: on uhci2
usb2: USB revision 1.0
uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
pcib7: at device 30.0 on pci0
pci7: on pcib7
pci7: at device 1.0 (no driver attached)
isab0: at device 31.0 on pci0
isa0: on isab0
atapci0: port 0x2060-0x206f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0
ata0: channel #0 on atapci0
ata1: channel #1 on atapci0
pci0: at device 31.3 (no driver attached)
acpi_button0: on acpi0
atkbdc0: port 0x64,0x60 irq 1 on acpi0
atkbd0: irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model Generic PS/2 mouse, device ID 0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
fdc0: port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on acpi0
fdc0: [FAST]
ppc0: port 0x778-0x77f,0x378-0x37f irq 7 drq 3 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/9 bytes threshold
ppbus0: on ppc0
plip0: on ppbus0
lpt0: on ppbus0
lpt0: Interrupt-driven port
ppi0: on ppbus0
pmtimer0 on isa0
orm0: at iomem 0xe0000-0xe3fff,0xc8000-0xc8fff,0xc0000-0xc7fff on isa0
sc0: at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounters tick every 10.000 msec
ipfw2 initialized, divert enabled, rule-based forwarding disabled, default to accept, logging limited to 300 packets/entry by
default
acd0: CDROM at ata0-master PIO4
Waiting 10 seconds for SCSI devices to settle
amrd0: on amr0
amrd0: 280026MB (573493248 sectors) RAID 1 (optimal)
sa0 at ahd1 bus 0 target 3 lun 0
sa0: Removable Sequential Access SCSI-3 device
sa0: 40.000MB/s transfers (20.000MHz, offset 32, 16bit)
ses0 at amr0 bus 0 target 6 lun 0
ses0: Fixed Processor SCSI-2 device
ses0: SAF-TE Compliant Device
SMP: AP CPU #3 Launched!
SMP: AP CPU #1 Launched!
SMP: AP CPU #2 Launched!
Mounting root from ufs:/dev/amrd0s1a
em0: Link is up 100 Mbps Full Duplex

---------