From owner-freebsd-stable@FreeBSD.ORG  Wed Dec 15 08:03:31 2004
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From: Christian Laursen <xi@borderworlds.dk>
Date: 15 Dec 2004 09:03:28 +0100
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Subject: Dummynet related panic in 5.3-RELEASE-p1
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We are experiencing a panic about once a day that seems related to
dummynet.

Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0xc
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc04d8b8f
stack pointer           = 0x10:0xc74dbb6c
frame pointer           = 0x10:0xc74dbb90
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         = 27 (swi5: clock sio)
[thread 100021]
Stopped at      m_copym+0x2f:   cmpl    %esi,0xc(%edx)
db> trace
m_copym(0,3ffc,3fe8,1,14) at m_copym+0x2f
ip_fragment(c0ccf80e,c74dbc48,4000,0,1) at ip_fragment+0x214
ip_output(c0cbac00,0,c74dbc14,0,0,0) at ip_output+0x6e8
transmit_event(c0bcda00) at transmit_event+0xa9
ready_event(c0d14300) at ready_event+0x150
dummynet(0) at dummynet+0xeb
softclock(0) at softclock+0x217
ithread_loop(c0ac3580,c74dbd48) at ithread_loop+0x155
fork_exit(c04917f0,c0ac3580,c74dbd48) at fork_exit+0x75
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xc74dbd7c, ebp = 0 ---

I have put the kernel configuration at at <http://hoegaarden.pil.dk/~cfsl/NS3>
and the boot output at <http://hoegaarden.pil.dk/~cfsl/ns3-dmesg>.

Thanks in adavnce for any help solving this.

-- 
Christian Laursen