>Synopsis: wtmp should be zero'd too, according to time_t change
>Category: documentation
>Environment:
System : OpenBSD 5.4
Details : OpenBSD 5.4-current (GENERIC.MP) #30: Thu Aug 29 08:54:57
JST 2013
[email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
Architecture: OpenBSD.amd64
Machine : amd64
>Description:
<http://www.openbsd.org/faq/current.html#20130813> explains
> 5. BEFORE REBOOTING, run the following using that root shell from two steps
back:
>
> pwd_mkdb /etc/master.passwd
> cp /dev/null /var/log/lastlog
> cp /dev/null /var/run/utmp
Here we should add "cp /dev/null /var/log/wtmp".
Without clearing old contents of wtmp, last command outputs garbage.
>How-To-Repeat:
>Fix:
dmesg:
OpenBSD 5.4-current (GENERIC.MP) #30: Thu Aug 29 08:54:57 JST 2013
yozo@openbsd-running-on-kvm:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 2130694144 (2031MB)
avail mem = 2065940480 (1970MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0x7ffffe90 (12 entries)
bios0: vendor Seabios version "0.5.1" date 01/01/2007
bios0: Red Hat KVM
acpi0 at bios0: rev 0
acpi0: sleep states S5
acpi0: tables DSDT FACP SSDT APIC
acpi0: wakeup devices
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
acpiprt0 at acpi0: bus 0 (PCI0)
mpbios0 at bios0: Intel MP Specification 1.4
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz, 2594.10 MHz
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SS,SSE3,SSSE3,CX16,NXE,LONG,LAHF
cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line
16-way L2 cache
cpu0: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: smt 0, core 0, package 0
cpu0: apic clock running at 1000MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz, 2593.91 MHz
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SS,SSE3,SSSE3,CX16,NXE,LONG,LAHF
cpu1: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line
16-way L2 cache
cpu1: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu1: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu1: smt 0, core 0, package 0
cpu2 at mainbus0: apid 2 (application processor)
cpu2: Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz, 2593.99 MHz
cpu2:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SS,SSE3,SSSE3,CX16,NXE,LONG,LAHF
cpu2: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB 64b/line
16-way L2 cache
cpu2: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu2: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu2: smt 0, core 0, package 0
mpbios0: bus 0 is type PCI
mpbios0: bus 1 is type ISA
ioapic0 at mainbus0: apid 3 pa 0xfec00000, version 11, 24 pins
ioapic0: misconfigured as apic 0, remapped to apid 3
pci0 at mainbus0 bus 0
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
atapiscsi0 at pciide0 channel 0 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(pciide0:0:0): using PIO mode 4, DMA mode 2
wd0 at pciide0 channel 1 drive 0: <QEMU HARDDISK>
wd0: 16-sector PIO, LBA48, 20480MB, 41943040 sectors
wd1 at pciide0 channel 1 drive 1: <QEMU HARDDISK>
wd1: 16-sector PIO, LBA48, 184320MB, 377487360 sectors
wd0(pciide0:1:0): using PIO mode 4, DMA mode 2
wd1(pciide0:1:1): using PIO mode 4, DMA mode 2
uhci0 at pci0 dev 1 function 2 "Intel 82371SB USB" rev 0x01: apic 3 int 11
piixpm0 at pci0 dev 1 function 3 "Intel 82371AB Power" rev 0x03: apic 3 int 9
iic0 at piixpm0
iic0: addr 0x4c 48=00 words 00=0000 01=0000 02=0000 03=0000 04=0000 05=0000
06=0000 07=0000
iic0: addr 0x4e 48=00 words 00=0000 01=0000 02=0000 03=0000 04=0000 05=0000
06=0000 07=0000
vga1 at pci0 dev 2 function 0 "Cirrus Logic CL-GD5446" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
em0 at pci0 dev 3 function 0 "Intel 82540EM" rev 0x03: apic 3 int 11, address
02:16:3e:1c:c5:27
isa0 at pcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: 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
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
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
nvram: invalid checksum
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
uhidev0 at uhub0 port 1 configuration 1 interface 0 "QEMU 0.15.0 QEMU USB
Tablet" rev 1.00/0.00 addr 2
uhidev0: iclass 3/0
uhid0 at uhidev0: input=6, output=0, feature=0
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on wd0a (73d07c0063a5c08e.a) swap on wd0b dump on wd0b
clock: unknown CMOS layout
usbdevs:
