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From: Harald Schmalzbauer <h.schmalzbauer@omnisec.de>
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Subject: kqemu crash (page fault) with -current
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Hello,

today I tried qemu for the first time and I love it.
Now I'd need some speed and tried kqemu, but it immediately reboots my 
machine.
Here is what I could transcribe:

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
faulkt virtual address  = 0x82
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc0670545
stack pointer           = 0x28:0xe71e5a3c
frame pointer           = 0x28:0xe71e5a50
code segment            = bas 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 1461 (qemu)
[thread pid 1461 tid 100088]
Stopped at      _vm_map_lock+0x10:      cmpb    $0,0x81(%ebx)
db> bt
Tracing pid 1461 tid 100088 td 0xc4995800
_vm_map_lock(1,c070cbb4,7ac,c07344c4,c0714b73,...) at _vm_map_lock+0x10
vm_map_wire(1,285f6000,285f7000,1,116,...) at vm_map_wire+0x33
kqemu_lock_user_page(e71e5af4,285f6000,f01d2000,285f6000,0,...) at 
kqemu_lock_user_page+0x38
mon_user_map() at mon_user_map+0xe7

Any help appreciated.

Thanks in advance,

-Harry