NetBSD Problem Report #44417

From  Wed Jan 19 17:21:50 2011
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Date: Wed, 19 Jan 2011 17:21:31 +0000
Subject: immediate uvm_fault on boot w/ latest -current
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>Number:         44417
>Category:       kern
>Synopsis:       kernel faults immediately after/during hardware detection
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jan 19 17:25:00 +0000 2011
>Release:        NetBSD 5.99.43
	Method Logic Digital (
System: NetBSD kamloops 5.99.43 NetBSD 5.99.43 (kamloops) #157: Sat Jan 15 11:02:49 PST 2011 root@kamloops:/usr/obj/sys/arch/amd64/compile/kamloops amd64
Architecture: x86_64
Machine: amd64

Kernel has been failing for last ~30 hours: was initially failing on ehci hardware detection (hang), and did later fault w/ uvm failure as described here.

	Transcription of boot failure (boot -z):

	Detecting hardware... ifmedia_set: no match for 0x20/0xfffffff
	uvm_fault(oxffffffff80b41aa0, 0xfffffffffffff000,2)->e

	fatal page fault in supervisor mode
	trap type 6 code 2 rip ffffffff80625416 cd 8 rflags 10246 cr2 ffffffffffffffff
	cpl 8 rsp ffffffff80cb1360
	kernel: page fault trap, code=0
	Stopped in pid 0.1 (system) at netbsd: uvm_pglist_add+0x36: movq %rdx,0(%rax)

Backtrace (function names only) as follows:

Backtrace (function names only) as follows:

	Build kernel w/ latest code, reboot

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