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port-amd64/42631: Booting 5.0.1/amd64 (or 5.0.1/i386) install kernel gets page fault on Dell Inspiron 545s

>Number:         42631
>Category:       port-amd64
>Synopsis:       Booting 5.0.1/amd64 (or 5.0.1/i386) install kernel gets page 
>fault on Dell Inspiron 545s
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jan 17 13:05:00 +0000 2010
>Originator:     Dennis Ferguson
>Release:        amd64cd-5.0.1.iso
Not available.

Machine is a Dell Inspiron 545s.  It has a Core 2 Quad processor and a RAID 
controller, otherwise is an unexceptional, low end Dell desk top.
I wasn't sure which category to file this under since both the i386 and amd64 
install disks fail in about the same place.  I want to install an amd64 system, 
however, so I filed the bug here.

Booting the 5.0.1 installation iso image kernel results in a kernel page fault 
during, or just after, autoconfiguration.  When it stops it looks like this:

azalia0: codec[0]: Realtek ALC888 (rev. 2.2), HDA rev. 1.0
uvm_fault(0xffffffff8110eb40, 0xffff800007f37000, 1) -> e
trap type 6 code 0 rip ffffffff807169e5 cs 8 rflags 10207 cr2 ffff800007f37014 
cpl 0 rsp ffff80004e4df918
kernel: page fault trap, code=0
Stopped in pid 0.43 (system) at 0xffffffff807159e5: repe movsq (%rsi), 

This happens no matter which of the 3 boot options is selected. This also 
happens with the amd64 5.0 install disk kernel and the 5.0.1 i386 install disk 
kernel.  In the latter case the failure looks like:

azalia0: codec[0]: Realtek ALC888 (rev. 2.2), HDA rev. 1.0
uvm_fault(0xc060d5c0, , 0xc4ca3000, 1) -> 0xe
trap type 6 code 0 eip c07d9504 cs 8 eflags 10207 cr2 c4ca3014 ilevel 0
kernel: supervisor trap page fault, code=0
Stopped in pid 0.44 (system) at netbsd:memcpy+0x14: repe movsl (%esi), 

The amd64 4.0 iso image installation disk boots fine on the machine but lacks 
support for the disk controller so I can't make progress that way.

Boot the 5.0.1 install CD (either amd64 or i386) in a Dell Inspiron 545s.

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