Kernel: Panic problem with TCPDUMP

[Guthemberg Silvestre]

Hi everyone,
I'm using the FreeBSD 5.2(FreeBSD 5.2-RELEASE #0: Sun Jan 11 04:21:45 GMT 
2004),default installation, to collect packets with TCPDUMP. The computer 
has:
-> CPU: AMD Athlon(tm) XP 2400+ (2004.56-MHz 686-class CPU)
-> real memory  = 536805376 (511 MB)
-> rl0: <RealTek 8139 10/100BaseTX> port 0xd400-0xd4ff mem 
0xdfffbf00-0xdfffbfff irq 18 at device 8.0 on pci0, etc.
The problem is when I start the program TCPDUMP to collect the packets from 
a 32Mb/s link (at the rl0 interface). After some time, the following log 
error messages appear:
"Mar 30 11:29:22 p2p kernel: panic: vm_fault: fault on nofault entry, addr: 
e0aae000
Mar 30 11:29:22 p2p kernel: cpuid = 0;
Mar 30 11:29:22 p2p kernel:
Mar 30 11:29:22 p2p kernel: syncing disks, buffers remaining... 3842 3842 
3842 3842 3842 3842 3842 3842 3842 3842 3842 3842 3842 3842 3842 38
42 3842 3842 3842 3842
Mar 30 11:29:22 p2p kernel: giving up on 26 buffers
Mar 30 11:29:22 p2p kernel: Uptime: 58m52s
Mar 30 11:29:22 p2p kernel: kernel trap 12 with interrupts disabled
Mar 30 11:29:22 p2p kernel:
Mar 30 11:29:22 p2p kernel:
Mar 30 11:29:22 p2p kernel: Fatal trap 12: page fault while in kernel mode
Mar 30 11:29:22 p2p kernel: cpuid = 0; apic id = 00
Mar 30 11:29:22 p2p kernel: fault virtual address       = 0x24
Mar 30 11:29:22 p2p kernel: fault code          = supervisor read, page not 
present
Mar 30 11:29:22 p2p kernel: instruction pointer = 0x8:0xc0654dae
Mar 30 11:29:22 p2p kernel: stack pointer               = 0x10:0xd77e4c0c
Mar 30 11:29:22 p2p kernel: frame pointer               = 0x10:0xd77e4c30
Mar 30 11:29:22 p2p kernel: code segment                = base 0x0, limit 
0xfffff, type 0x1b
Mar 30 11:29:22 p2p kernel: = DPL 0, pres 1, def32 1, gran 1
Mar 30 11:29:22 p2p kernel: processor eflags    = resume, IOPL = 0
Mar 30 11:29:22 p2p kernel: current process             = 36 (swi8: tty:sio 
clock)
Mar 30 11:29:22 p2p kernel: trap number         = 12
Mar 30 11:29:22 p2p kernel: panic: page fault
Mar 30 11:29:22 p2p kernel: cpuid = 0;
Mar 30 11:29:22 p2p kernel: Uptime: 58m52s
Mar 30 11:29:22 p2p kernel: Shutting down ACPI
Mar 30 11:29:22 p2p kernel: Automatic reboot in 15 seconds - press a key on 
the console to abort
Mar 30 11:29:22 p2p kernel: Rebooting...
Mar 30 11:29:22 p2p kernel: Copyright (c) 1992-2004 The FreeBSD Project."
What can I do to correct this problem?
Thanks in advance.
Guthemberg Silvestre

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