kern/121955: [ipfw] [panic] freebsd 7.0 panic with mpd

[Alexander Shulikov]

I did tuning, that was in my other letters (net.isr.direct=0, tuning
in /boot/loader.conf)
And received panic after 12 minutes:
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0xf2a9864
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc7d1a95f
stack pointer           = 0x28:0xed8ccae4
frame pointer           = 0x28:0xed8ccbd8
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         = 12 (swi1: net)
trap number             = 12
panic: page fault
cpuid = 0
Uptime: 12m14s
Physical memory: 1015 MB
Dumping 67 MB: (CTRL-C to abort)  52 36 20 4

#0  doadump () at pcpu.h:195
195     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) backtrace
#0  doadump () at pcpu.h:195
#1  0xc055a0b7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2  0xc055a379 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:563
#3  0xc07ac59c in trap_fatal (frame=0xed8ccaa4, eva=254449764) at
/usr/src/sys/i386/i386/trap.c:899
#4  0xc07ac800 in trap_pfault (frame=0xed8ccaa4, usermode=0,
eva=254449764) at /usr/src/sys/i386/i386/trap.c:812
#5  0xc07ad182 in trap (frame=0xed8ccaa4) at /usr/src/sys/i386/i386/trap.c:490
#6  0xc079431b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#7  0xc7d1a95f in ?? ()
Previous frame inner to this frame (corrupt stack?)

Also I fix ipfw.sh and remove all queues from it. Used only pipes.