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port-amd64/42128: page fault trap installing NetBSD/amd64 5.0.1 under Xen

>Number:         42128
>Category:       port-amd64
>Synopsis:       page fault trap installing NetBSD/amd64 5.0.1 under Xen
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Sep 26 10:35:00 +0000 2009
>Release:        NetBSD 5.0.1
Architecture: x86_64
Machine: amd64
Installing as a Xen guest using the amd64cd-5.0.1.iso.  When it
got to the untar step in sysinst (extracting kern-GENERIC.tgz), it
aborted with:

kernel: page fault trap, code=0
Stopped in pid 0.4 (system) at  0xffffffff804f163e:    repe insl      
db{0}> bt
?() at 0xffffffff804f163e
?() at 0xffffffff804fefc7
?() at 0xffffffff802c3207
?() at 0xffffffff804e0e4d
?() at 0xffffffff80105a4f
Bad frame pointer: 0xffff800001215ac40

(No symbols on that install kernel.)

This was also reported by someone else in January 2008

My Xen dom0 is a Debian Linux server with Linux 2.6.26-1-xen-amd64
kernel running xenwatch, xenbus, xenrestored, xend, xenconsoled,
and many qemu-dm processes. I think that is xen-3.2-1. (It is
hosting OpenSolaris, OpenBSD, Windows, Debian, and others.)

If you need dmesg output from when I am running 5.99.18, please
let me know.
I was able to repeat by using sysinst.
Something appears to be fixed.
I am able to install and use NetBSD/amd64 5.99.18.
I don't know what the fix for 5.0.1 is.

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