USB / VM-related panic (vm_fault)

From: Wesley Morgan <>
Date: Fri, 12 Sep 2003 12:31:02 -0400 (EDT)
When attempting to copy files from my digital camera I get this panic in
what appears to be the VM system, however I don't get a "traditional"
panic message or a kernel dump, just a ddb backtrace. This is copied by
hand so I hope there are no errors:

panic: vm_fault: fault on nofault entry, addr: d3b5c000

Stack backtrace:

backtrace(c0336a41, c038ac00, c03402ac, d677c9f8, 100) at backtrace+0x17
panic(c03402ac, d3b5c000, 2, d677cb0c, d677cafc) at panic+0xb7
vm_fault(c082f000, d3b50010, 10, d3b5c000, dcafa000) at trap+0x30f
calltrap at calltrap+0x5

--- trap 0xc eip=0xc02fad50, esp = 0xd677cc38, ebp = 0xd677cc64 ---

memcpy(c3f88300, c3fc4ed0, 0, 1, 0) at memcpy+0x14
ohci_softintr(c3e60000, d677ccc0, c018ff11, c3e60000, 1848ef30) at
usb_schedsoftintr(c3e60000, 1848ef30, d677cccc, 52, c3e06700) at
ohci_intr1(c3e6000, d677cd08, c01ce6c8, c3e60000, c630758b) at
ohci_intr(c3e6000, c630758b, 74740107, 8d14558b, c3e55000) at
ithread_loop(c3e6f680, d677ed48, 14558b3b, 8dc00c8d, 80028a4c) at
fork_exit(c01ce4f0, c3e6f680, d677cd48) at fork_exit+0xb1
fork_trampoline() at fork_trampoline+0x8

--- trap 0x1 eip=0, esp=0xd677cd7c, ebp = 0 ---

Debugger ("panic")
Stopped at   Debugger+0x54:    xchgl  %ebx,in_Debugger,0

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Received on Fri Sep 12 2003 - 07:31:06 UTC

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