Hi all,

I am currently running a snapshot of the vimage source
(vimage_7_20090505.tgz) against FreeBSD 7.1 on a Soekris Net5501-70.  I am
running a small load on the Soekris board and periodically I will receive
the following error:


----------
Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0x8
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc068745b
stack pointer           = 0x28:0xc4362c18
frame pointer           = 0x28:0xc4362c44
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         = 13 (swi4: clock sio)
[thread pid 13 tid 100004 ]
Stopped at      send_pkt+0x1b:  movl    0x8(%eax),%eax

db> bt
Tracing pid 13 tid 100004 td 0xc4439690
send_pkt(3437336e,2,c4439af0,c4439690,c4362c64,...) at send_pkt+0x1b
ipfw_tick(c453b400,c4439690,0,c4362cbc,c05c1f93,...) at ipfw_tick+0x10e
softclock(0,0,c0838d87,4a1,aa55aa55,...) at softclock+0x247
ithread_loop(c4436020,c4362d38,aa55aa55,aa55aa55,aa55aa55,...) at
ithread_loop+0x1ab
fork_exit(c05986f0,c4436020,c4362d38) at fork_exit+0x96
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xc4362d70, ebp = 0 ---

db> show registers
cs                0x20
ds          0xc4430028
es          0xc4360028
fs                 0x8
ss                0x28
eax                  0
ecx         0x3065b7ee
edx         0xc4b45598
ebx         0xc4b4557c
esp         0xc4362c18
ebp         0xc4362c44
esi         0xc453b400
edi               0x70
eip         0xc068745b  send_pkt+0x1b
efl            0x10286
send_pkt+0x1b:  movl    0x8(%eax),%eax
----------

Any ideas?

Thanks,
-J
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