Hi!

Trying to upgrade to 5.0 fails with a kernel panic
(vmt0, see dmesg below). Previous 4.9 worked fine,
also 5.0 bsd.rd boots (dmesg below too).

The VMware Tools driver seems to miss something -
"vmt0: failed to open backdoor RPC channel (TCLO protocol)" -
which is correct, as OpenBSD is _not_ run inside a VMware
virtual machine but in a Linux KVM (Kernel 3.0.4,
qemu-kvm 0.15.1).

Is this a known problem? Searching for vmt on misc@
did not show anything. 

Below is the dmesg output, captured via a virtual 
serial device.

Regards,
Walter

dmesg of failed boot of GENERIC 5.0 (i386):

booting hd0a:/bsd: 8192892+1088776 [61+367888+353319]=0x98a398
entry point at 0x200120

[ using 721684 bytes of bsd ELF symbol table ]
Copyright (c) 1982, 1986, 1989, 1991, 1993
        The Regents of the University of California.  All rights reserved.
Copyright (c) 1995-2011 OpenBSD. All rights reserved.  http://www.OpenBSD.org

OpenBSD 5.0 (GENERIC) #43: Wed Aug 17 10:10:52 MDT 2011
    dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: AMD Phenom(tm) II X6 1100T Processor ("AuthenticAMD" 686-class, 512KB L2 
cache) 3.31 GHz
cpu0: 
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,CX16,POPCNT
real mem  = 402178048 (383MB)
avail mem = 385548288 (367MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 06/23/99, BIOS32 rev. 0 @ 0xff046, SMBIOS 
rev. 2.4 @ 0x17fffef0 (10 entries)
bios0: vendor Bochs version "Bochs" date 01/01/2007
bios0: Bochs Bochs
acpi0 at bios0: rev 0
acpi0: sleep states S3 S4 S5
acpi0: tables DSDT FACP SSDT APIC HPET
acpi0: wakeup devices
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
acpihpet0 at acpi0: 100000000 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpicpu0 at acpi0
mpbios0 at bios0: Intel MP Specification 1.4
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: apic clock running at 1000MHz
mpbios0: bus 0 is type PCI
mpbios0: bus 1 is type ISA
ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 11, 24 pins
ioapic0: misconfigured as apic 0, remapped to apid 1
bios0: ROM list: 0xc0000/0x9e00 0xca000/0xa00 0xcb000/0xa00 0xcc000/0x600 
0xcc800/0x2400
vmt0 at mainbus0
vmware: open failed, eax=564d5868, ecx=0000001e, edx=00005658
vmt0: failed to open backdoor RPC channel (TCLO protocol)
kernel: protection fault trap, code=0
Stopped at      k1x_init+0x56:  rdmsr
k1x_init(d0ad7540,d09ae620,d0b8ce58,d059ce20,30000002) at k1x_init+0x56
mainbus_attach(0,d130bfc0,0,d09aafc0,0) at mainbus_attach+0xc1
config_attach(0,d09aafc0,0,0,d0a1bc40) at config_attach+0x1bb
config_rootfound(d08cde8c,0,0,d03d8b51,0) at config_rootfound+0x46
cpu_configure(d0ad7540,1,1000,cff3f000,1) at cpu_configure+0x29
main(d02004ba,d02004c2,0,0,0) at main+0x3ea
ddb> 


dmesg of successful boot of RAMDISK_CD 5.0 (i386),
just as a system configuration reference.

booting hd0a:bsd.rd: 5961320+946088 [61+228000+215962]=0x702e28
entry point at 0x200120

Copyright (c) 1982, 1986, 1989, 1991, 1993
        The Regents of the University of California.  All rights reserved.
Copyright (c) 1995-2011 OpenBSD. All rights reserved.  http://www.OpenBSD.org

OpenBSD 5.0 (RAMDISK_CD) #36: Wed Aug 17 10:27:31 MDT 2011
    dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/RAMDISK_CD
cpu0: AMD Phenom(tm) II X6 1100T Processor ("AuthenticAMD" 686-class, 512KB L2 
cache) 3.31 GHz
cpu0: 
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3,CX16,POPCNT
real mem  = 402178048 (383MB)
avail mem = 388599808 (370MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 06/23/99, BIOS32 rev. 0 @ 0xff046, SMBIOS 
rev. 2.4 @ 0x17fffef0 (10 entries)
bios0: vendor Bochs version "Bochs" date 01/01/2007
bios0: Bochs Bochs
acpi0 at bios0: rev 0
acpi0: sleep states S3 S4 S5
acpi0: tables DSDT FACP SSDT APIC HPET
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
acpiprt0 at acpi0: bus 0 (PCI0)  
mpbios at bios0 function 0x0 not configured
bios0: ROM list: 0xc0000/0x9e00 0xca000/0xa00 0xcb000/0xa00 0xcc000/0x600 
0xcc800/0x2400
cpu0 at mainbus0: (uniprocessor) 
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02
pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00
pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA, channel 0 
wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <QEMU HARDDISK>
wd0: 16-sector PIO, LBA48, 12288MB, 25165824 sectors
wd0(pciide0:0:0): using PIO mode 4, DMA mode 2
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <QEMU, QEMU DVD-ROM, 0.15> ATAPI 5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2
uhci0 at pci0 dev 1 function 2 "Intel 82371SB USB" rev 0x01: irq 11
"Intel 82371AB Power" rev 0x03 at pci0 dev 1 function 3 not configured
vga1 at pci0 dev 2 function 0 unknown vendor 0x1234 product 0x1111 rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
em0 at pci0 dev 3 function 0 "Intel PRO/1000MT (82540EM)" rev 0x03: irq 11, 
address 00:50:5a:03:81:46
em1 at pci0 dev 4 function 0 "Intel PRO/1000MT (82540EM)" rev 0x03: irq 11, 
address 00:50:5a:74:db:68
"Qumranet Virtio Memory" rev 0x00 at pci0 dev 5 function 0 not configured
"Intel 6300ESB WDT" rev 0x00 at pci0 dev 6 function 0 not configured
isa0 at pcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com0: console
com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot 
wskbd0 at pckbd0: console keyboard, using wsdisplay0
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: density unknown
fd1 at fdc0 drive 1: density unknown
usb0 at uhci0: USB revision 1.0  
uhub0 at usb0 "Intel UHCI root hub" rev 1.00/1.00 addr 1
uhidev0 at uhub0 port 1 configuration 1 interface 0 "QEMU 0.15.1 QEMU USB 
Tablet" rev 1.00/0.00 addr 2
uhidev0: iclass 3/0
uhid at uhidev0 not configured   
softraid0 at root
scsibus1 at softraid0: 256 targets
root on rd0a swap on rd0b dump on rd0b
erase ^?, werase ^W, kill ^U, intr ^C, status ^T

Welcome to the OpenBSD/i386 5.0 installation program.
(I)nstall, (U)pgrade or (S)hell? 

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