During the upgrade process from 9.0 to 9.1 (I fetched new sources via
svn) after booting the new kernel the system stops booting with error
above. Booting kernel.old (9.0) is still fine. The machine is virtual
on ESXi 5.1.

I found a post[0] related to NAS4Free that might describe a similiar
error but before trying that I'd like to ask what information or further
steps are required.

Thanks, Helmut

N.B.: freebsd-update failed with "cannot open files/.gz: No such file
or directory" so I compiled the kernel myself which I did many times
before in the past.

[0] http://forums.nas4free.org/viewtopic.php?f=16&t=1020

[helmut@BSDHelmut ~]$ dmesg -a
Copyright (c) 1992-2012 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 9.0-RELEASE-p5 #20 r244958M: Wed Jan  2 17:29:17 CET 2013
    root@BSDHelmut.charlieroot.de:/usr/obj/usr/src/sys/GENERIC-QUOTA-PF-ALTQ amd64
CPU: Intel(R) Xeon(R) CPU           E5420  @ 2.50GHz (2500.09-MHz K8-class CPU)
  Origin = "GenuineIntel"  Id = 0x10676  Family = 6  Model = 17  Stepping = 6
  Features=0xfa3fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,DTS,MMX,FXSR,SSE,SSE2,SS>
  Features2=0x80082201<SSE3,SSSE3,CX16,SSE4.1,HV>
  AMD Features=0x20100800<SYSCALL,NX,LM>
  AMD Features2=0x1<LAHF>
  TSC: P-state invariant
real memory  = 2147483648 (2048 MB)
avail memory = 2046697472 (1951 MB)
Event timer "LAPIC" quality 400
ACPI APIC Table: <PTLTD          APIC  >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 4 package(s) x 1 core(s)
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
 cpu2 (AP): APIC ID:  2
 cpu3 (AP): APIC ID:  3
MADT: Forcing active-low polarity and level trigger for SCI
ioapic0 <Version 1.1> irqs 0-23 on motherboard
kbd1 at kbdmux0
acpi0: <INTEL 440BX> on motherboard
acpi0: Power Button (fixed)
Timecounter "HPET" frequency 14318180 Hz quality 950
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 UDMA33 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x10c0-0x10cf at device 7.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
pci0: <bridge> at device 7.3 (no driver attached)
pci0: <base peripheral> at device 7.7 (no driver attached)
vgapci0: <VGA-compatible display> port 0x10d0-0x10df mem 0xd8000000-0xdbffffff,0xd0800000-0xd0ffffff irq 16 at device 15.0 on pci0
pcib2: <ACPI PCI-PCI bridge> at device 17.0 on pci0
pci2: <ACPI PCI bus> on pcib2
em0: <Intel(R) PRO/1000 Legacy Network Connection 1.0.3> port 0x2000-0x203f mem 0xd1020000-0xd103ffff,0xd1000000-0xd100ffff irq 18 at device 0.0 on pci2
em0: Memory Access and/or Bus Master bits were not set!
em0: Ethernet address: 00:0c:29:94:76:2c
uhci0: <UHCI (generic) USB controller> port 0x2040-0x205f irq 16 at device 2.0 on pci2
usbus0: <UHCI (generic) USB controller> on uhci0
ehci0: <EHCI (generic) USB 2.0 controller> mem 0xd1010000-0xd1010fff irq 17 at device 3.0 on pci2
usbus1: EHCI version 1.0
usbus1: <EHCI (generic) USB 2.0 controller> on ehci0
pcib3: <ACPI PCI-PCI bridge> at device 21.0 on pci0
pci3: <ACPI PCI bus> on pcib3
mpt0: <LSILogic SAS/SATA Adapter> port 0x4000-0x40ff mem 0xd2410000-0xd2413fff,0xd2400000-0xd240ffff irq 18 at device 0.0 on pci3
mpt0: MPI Version=1.5.0.0
pcib4: <ACPI PCI-PCI bridge> at device 21.1 on pci0
pci4: <ACPI PCI bus> on pcib4
pcib5: <ACPI PCI-PCI bridge> at device 21.2 on pci0
pci5: <ACPI PCI bus> on pcib5
pcib6: <ACPI PCI-PCI bridge> at device 21.3 on pci0
pci6: <ACPI PCI bus> on pcib6
pcib7: <ACPI PCI-PCI bridge> at device 21.4 on pci0
pci7: <ACPI PCI bus> on pcib7
pcib8: <ACPI PCI-PCI bridge> at device 21.5 on pci0
pci8: <ACPI PCI bus> on pcib8
pcib9: <ACPI PCI-PCI bridge> at device 21.6 on pci0
pci9: <ACPI PCI bus> on pcib9
pcib10: <ACPI PCI-PCI bridge> at device 21.7 on pci0
pci10: <ACPI PCI bus> on pcib10
pcib11: <ACPI PCI-PCI bridge> at device 22.0 on pci0
pci11: <ACPI PCI bus> on pcib11
pcib12: <ACPI PCI-PCI bridge> at device 22.1 on pci0
pci12: <ACPI PCI bus> on pcib12
pcib13: <ACPI PCI-PCI bridge> at device 22.2 on pci0
pci13: <ACPI PCI bus> on pcib13
pcib14: <ACPI PCI-PCI bridge> at device 22.3 on pci0
pci14: <ACPI PCI bus> on pcib14
pcib15: <ACPI PCI-PCI bridge> at device 22.4 on pci0
pci15: <ACPI PCI bus> on pcib15
pcib16: <ACPI PCI-PCI bridge> at device 22.5 on pci0
pci16: <ACPI PCI bus> on pcib16
pcib17: <ACPI PCI-PCI bridge> at device 22.6 on pci0
pci17: <ACPI PCI bus> on pcib17
pcib18: <ACPI PCI-PCI bridge> at device 22.7 on pci0
pci18: <ACPI PCI bus> on pcib18
pcib19: <ACPI PCI-PCI bridge> at device 23.0 on pci0
pci19: <ACPI PCI bus> on pcib19
pcib20: <ACPI PCI-PCI bridge> at device 23.1 on pci0
pci20: <ACPI PCI bus> on pcib20
pcib21: <ACPI PCI-PCI bridge> at device 23.2 on pci0
pci21: <ACPI PCI bus> on pcib21
pcib22: <ACPI PCI-PCI bridge> at device 23.3 on pci0
pci22: <ACPI PCI bus> on pcib22
pcib23: <ACPI PCI-PCI bridge> at device 23.4 on pci0
pci23: <ACPI PCI bus> on pcib23
pcib24: <ACPI PCI-PCI bridge> at device 23.5 on pci0
pci24: <ACPI PCI bus> on pcib24
pcib25: <ACPI PCI-PCI bridge> at device 23.6 on pci0
pci25: <ACPI PCI bus> on pcib25
pcib26: <ACPI PCI-PCI bridge> at device 23.7 on pci0
pci26: <ACPI PCI bus> on pcib26
pcib27: <ACPI PCI-PCI bridge> at device 24.0 on pci0
pci27: <ACPI PCI bus> on pcib27
pcib28: <ACPI PCI-PCI bridge> at device 24.1 on pci0
pci28: <ACPI PCI bus> on pcib28
pcib29: <ACPI PCI-PCI bridge> at device 24.2 on pci0
pcib29: failed to allocate initial I/O port window: 0xf000-0xffff
pci29: <ACPI PCI bus> on pcib29
pcib30: <ACPI PCI-PCI bridge> at device 24.3 on pci0
pci30: <ACPI PCI bus> on pcib30
pcib31: <ACPI PCI-PCI bridge> at device 24.4 on pci0
pci31: <ACPI PCI bus> on pcib31
pcib32: <ACPI PCI-PCI bridge> at device 24.5 on pci0
pci32: <ACPI PCI bus> on pcib32
pcib33: <ACPI PCI-PCI bridge> at device 24.6 on pci0
pci33: <ACPI PCI bus> on pcib33
pcib34: <ACPI PCI-PCI bridge> at device 24.7 on pci0
pci34: <ACPI PCI bus> on pcib34
acpi_acad0: <AC Adapter> on acpi0
attimer0: <AT timer> port 0x40-0x43 irq 0 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
atrtc0: <AT realtime clock> port 0x70-0x71 irq 8 on acpi0
Event timer "RTC" frequency 32768 Hz quality 0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model IntelliMouse, device ID 3
ppc0: <Parallel port> port 0x378-0x37f irq 7 on acpi0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
uart1: <16550 or compatible> port 0x2f8-0x2ff irq 3 on acpi0
fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
acpi_throttle0: <ACPI CPU Throttling> on cpu0
acpi_throttle1: <ACPI CPU Throttling> on cpu1
acpi_throttle1: failed to attach P_CNT
device_attach: acpi_throttle1 attach returned 6
acpi_throttle2: <ACPI CPU Throttling> on cpu2
acpi_throttle2: failed to attach P_CNT
device_attach: acpi_throttle2 attach returned 6
acpi_throttle3: <ACPI CPU Throttling> on cpu3
acpi_throttle3: failed to attach P_CNT
device_attach: acpi_throttle3 attach returned 6
Timecounters tick every 10.000 msec
usbus0: 12Mbps Full Speed USB v1.0
usbus1: 480Mbps High Speed USB v2.0
ugen0.1: <0x15ad> at usbus0
uhub0: <0x15ad UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
ugen1.1: <0x15ad> at usbus1
uhub1: <0x15ad EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus1
uhub0: 2 ports with 2 removable, self powered
ugen0.2: <VMware> at usbus0
uhid0: <VMware> on usbus0
ums0: <VMware> on usbus0
ums0: 16 buttons and [XYZT] coordinates ID=0
uhub1: 6 ports with 6 removable, self powered
ugen0.3: <vendor 0x0e0f> at usbus0
uhub2: <VMware Virtual USB Hub> on usbus0
uhub2: 7 ports with 7 removable, self powered
da0 at mpt0 bus 0 scbus2 target 0 lun 0
da0: <ATA ST380817AS 3.42> Fixed Direct Access SCSI-5 device
da0: 300.000MB/s transfers
da0: 76319MB (156301488 512 byte sectors: 255H 63S/T 9729C)
da1 at mpt0 bus 0 scbus2 target 1 lun 0
da1: <ATA ST380817AS 3.42> Fixed Direct Access SCSI-5 device
da1: 300.000MB/s transfers
da1: 76319MB (156301488 512 byte sectors: 255H 63S/T 9729C)
#################################
######## This is where 9.1 halts.
#################################
cd0 at ata1 bus 0 scbus1 target 0 lun 0
cd0: <NECVMWar VMware IDE CDR10 1.00> Removable CD-ROM SCSI-0 device
cd0: 33.300MB/s transfers (UDMA2, ATAPI 12bytes, PIO 65534bytes)
cd0: Attempt to query device size failed: NOT READY, Medium not present
SMP: AP CPU #1 Launched!
SMP: AP CPU #2 Launched!
SMP: AP CPU #3 Launched!
GEOM_MIRROR: Device mirror/gm0 launched (2/2).
Trying to mount root from ufs:/dev/mirror/gm0p2 [rw]...
Setting hostuuid: 564d9fa5-3d8a-0076-a894-6b8b0f4c8654.
Setting hostid: 0x70173553.
Entropy harvesting: interrupts ethernet point_to_point kickstart.
Starting file system checks:
/dev/mirror/gm0p2: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p2: clean, 276610 free (1106 frags, 34438 blocks, 0.1% fragmentation)
/dev/mirror/gm0p15: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p15: clean, 1706896 free (2376 frags, 213065 blocks, 0.1% fragmentation)
/dev/mirror/gm0p14: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p14: clean, 1013005 free (61 frags, 126618 blocks, 0.0% fragmentation)
/dev/mirror/gm0p4: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p4: clean, 1170274 free (86162 frags, 135514 blocks, 1.7% fragmentation)
/dev/mirror/gm0p5: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p5: clean, 339791 free (6087 frags, 41713 blocks, 0.6% fragmentation)
/dev/mirror/gm0p7: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p7: clean, 100829 free (61 frags, 12596 blocks, 0.0% fragmentation)
/dev/mirror/gm0p12: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p12: clean, 778599 free (1383 frags, 97152 blocks, 0.1% fragmentation)
/dev/mirror/gm0p6: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p6: clean, 834727 free (199 frags, 104316 blocks, 0.0% fragmentation)
/dev/mirror/gm0p9: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p9: clean, 993315 free (123 frags, 124149 blocks, 0.0% fragmentation)
/dev/mirror/gm0p8: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p8: clean, 1012401 free (81 frags, 126540 blocks, 0.0% fragmentation)
/dev/mirror/gm0p10: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p10: clean, 1506359 free (45575 frags, 182598 blocks, 2.2% fragmentation)
/dev/mirror/gm0p13: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p13: clean, 5896961 free (281 frags, 737085 blocks, 0.0% fragmentation)
/dev/mirror/gm0p11: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mirror/gm0p11: clean, 2396541 free (1813 frags, 299341 blocks, 0.0% fragmentation)
Mounting local file systems:
WARNING: TMPFS is considered to be a highly experimental feature in FreeBSD.