>Number:         25388
>Category:       kern
>Synopsis:       After reboot dmesg shows old data from previous run
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 29 13:57:00 UTC 2004
>Closed-Date:
>Last-Modified:
>Originator:     Christian Hattemer
>Release:        1.6.2
>Organization:
>Environment:
NetBSD webster 1.6.2_STABLE NetBSD 1.6.2_STABLE (WEBSTER) #1: Wed Apr 28 18:20:03 CEST 2004     krille@webster:/usr/src/sys/arch/i386/compile/WEBSTER i386
>Description:
When doing a reboot dmesg shows data from the previous run in the first half of the buffer.

It isn't needed to change the kernel to make this effect happen, but it makes the origin of the old messages clear.

This is the first machine where I notice this strange issue. It does not happen on cold boot.

dmesg follows. The upper part is a leftover from the old kernel without audio and cardbus support. The lower part is from the new kernel with added audio and cardbus support.


movable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
pciide0: secondary channel interrupting at irq 15
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
Silicon Integrated System product 0x7012 (audio multimedia, revision 0xa0) at pci0 dev 2 function 7 not configured
ohci0 at pci0 dev 3 function 0: Silicon Integrated System 5597/5598 USB host controller (rev. 0x0f)
ohci0: interrupting at irq 11
ohci0: OHCI version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
uhub0 at usb0
uhub0: Silicon Integra OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1 at pci0 dev 3 function 1: Silicon Integrated System 5597/5598 USB host controller (rev. 0x0f)
ohci1: interrupting at irq 12
ohci1: OHCI version 1.0, legacy support
usb1 at ohci1: USB revision 1.0
uhub1 at usb1
uhub1: Silicon Integra OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 3 ports with 3 removable, self powered
Silicon Integrated System product 0x7002 (USB serial bus, interface 0x20) at pci0 dev 3 function 3 not configured
NEC product 0x00f2 (Firewire serial bus, interface 0x10, revision 0x01) at pci0 dev 12 function 0 not configured
O2 Micro Inc product 0x6933 (CardBus bridge, revision 0x01) at pci0 dev 14 function 0 not configured
O2 Micro Inc product 0x6933 (CardBus bridge, revision 0x01) at pci0 dev 14 function 1 not configured
rtk0 at pci0 dev 15 function 0: RealTek 8139 10/100BaseTX
rtk0: interrupting at irq 11
rtk0: Ethernet address 00:0c:76:85:37:34
ukphy0 at rtk0 phy 7: Generic IEEE 802.3u media interface
ukphy0: OUI 0x000000, model 0x0000, rev. 0
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
lpt0 at isa0 port 0x378-0x37b irq 7
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
apm0 at mainbus0: Power Management spec V1.2
biomask ff65 netmask ff65 ttymask ffe7
uhidev0 at uhub0 port 3 configuration 1 interface 0
uhidev0: Logitech Optical USB Mouse, rev 2.00/3.40, addr 2, iclass 3/1
ums0 at uhidev0: 3 buttons and Z dir.
wsmouse0 at ums0 mux 0
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)
syncing disks... done
NetBSD 1.6.2_STABLE (WEBSTER) #0: Wed Apr 28 15:07:14 CEST 2004
    krille@webster:/usr/src/sys/arch/i386/compile/WEBSTER
cpu0: Intel Pentium 4 (686-class), 2518.56 MHz
cpu0: D-cache 8 KB 64b/line 4-way
cpu0: features bfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu0: features bfebfbff<PGE,MCA,CMOV,FGPAT,PSE36,CFLUSH,DS,ACPI,MMX>
cpu0: features bfebfbff<FXSR,SSE,SSE2,SS,HTT,TM,B31>
total memory = 479 MB
avail memory = 442 MB
using 6144 buffers containing 24652 KB of memory
BIOS32 rev. 0 found at 0xfdb10
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 0 function 0
pchb0: Silicon Integrated System SiS 651 Host Bridge (rev. 0x02)
agp0 at pchb0: aperture at 0xe0000000, size 0x4000000
ppb0 at pci0 dev 1 function 0: Silicon Integrated System 86C201 (rev. 0x00)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
vga0 at pci1 dev 0 function 0: Silicon Integrated System product 0x6325 (rev. 0x00)
pci_mem_find: void region
pci_mem_find: void region
pci_mem_find: void region
wsdisplay0 at vga0 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
pcib0 at pci0 dev 2 function 0
pcib0: Silicon Integrated System 85C503 or 5597/5598 ISA bridge (rev. 0x25)
pciide0 at pci0 dev 2 function 5: Silicon Integrated System 96X UDMA6651 IDE controller (rev. 0x00)
pciide0: bus-master DMA support present
pciide0: primary channel wired to compatibility mode
wd0 at pciide0 channel 0 drive 0: <WDC WD600BB-00CAA1>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 57241 MB, 116301 cyl, 16 head, 63 sec, 512 bytes/sect x 117231408 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
pciide0: primary channel interrupting at irq 14
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using DMA data transfers)
pciide0: secondary channel wired to compatibility mode
atapibus0 at pciide0 channel 1: 2 targets
cd0 at atapibus0 drive 0: <HL-DT-ST DVDRAM GSA-4040B, K223AEA1241, A301> type 5 cdrom removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
pciide0: secondary channel interrupting at irq 15
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
auich0 at pci0 dev 2 function 7: SiS 7012 AC-97 Audio
auich0: interrupting at irq 11
auich0: ALG32 codec; 20 bit DAC, 18 bit ADC, Realtek 3D
ohci0 at pci0 dev 3 function 0: Silicon Integrated System 5597/5598 USB host controller (rev. 0x0f)
ohci0: interrupting at irq 11
ohci0: OHCI version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
uhub0 at usb0
uhub0: Silicon Integra OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1 at pci0 dev 3 function 1: Silicon Integrated System 5597/5598 USB host controller (rev. 0x0f)
ohci1: interrupting at irq 12
ohci1: OHCI version 1.0, legacy support
usb1 at ohci1: USB revision 1.0
uhub1 at usb1
uhub1: Silicon Integra OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 3 ports with 3 removable, self powered
Silicon Integrated System product 0x7002 (USB serial bus, interface 0x20) at pci0 dev 3 function 3 not configured
NEC product 0x00f2 (Firewire serial bus, interface 0x10, revision 0x01) at pci0 dev 12 function 0 not configured
cbb0 at pci0 dev 14 function 0: O2 Micro Inc product 0x6933 (rev. 0x01)
cbb0: NOT USED because of unconfigured interrupt
cbb1 at pci0 dev 14 function 1: O2 Micro Inc product 0x6933 (rev. 0x01)
cbb1: NOT USED because of unconfigured interrupt
rtk0 at pci0 dev 15 function 0: RealTek 8139 10/100BaseTX
rtk0: interrupting at irq 11
rtk0: Ethernet address 00:0c:76:85:37:34
ukphy0 at rtk0 phy 7: Generic IEEE 802.3u media interface
ukphy0: OUI 0x000000, model 0x0000, rev. 0
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
lpt0 at isa0 port 0x378-0x37b irq 7
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
spkr0 at pcppi0
sysbeep0 at pcppi0
isapnp0 at isa0 port 0x279: ISA Plug 'n Play device support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
apm0 at mainbus0: Power Management spec V1.2
biomask ff65 netmask ff65 ttymask ffe7
auich0: measured ac97 link rate at 48002 Hz, will use 48000 Hz
audio0 at auich0: full duplex, mmap, independent
uhidev0 at uhub0 port 3 configuration 1 interface 0
uhidev0: Logitech Optical USB Mouse, rev 2.00/3.40, addr 2, iclass 3/1
ums0 at uhidev0: 3 buttons and Z dir.
wsmouse0 at ums0 mux 0
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
wsdisplay0: screen 1 added (80x25, vt100 emulation)
wsdisplay0: screen 2 added (80x25, vt100 emulation)
wsdisplay0: screen 3 added (80x25, vt100 emulation)
wsdisplay0: screen 4 added (80x25, vt100 emulation)


>How-To-Repeat:
Boot the machine
Reboot
Look at dmesg
See that there's old data which shouldn't be there
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: