Kernel panic with 4.99.64 kernel on an iBook SE

["David H. Gutteridge" <dhgutteridge%sympatico.ca@localhost>]

> Hi all,
>
> I thought I'd test the latest -current kernel, per Michael's request to
> check things out in anticipation of the 5.0 branch.  A kernel from last
> night's releng build panics on boot during disk activity, like so:

I'm not sure if this is much more useful, but I built a kernel with
some debugging enabled/added for envsys (and I commented out the
panic() call so I could actually save a dmesg), as below.

So it looks like the CPU is getting picked up in the sensor framework.
The final messages are from the envsys_data record that's actually
triggering the panic, the device string "M-@" (probably just
gibberish?) isn't too helpful.  I haven't delved too deeply into the
code, but I infer the final messages are related to the cpu0 device,
given it's the only device that gets referenced and the sensor numbers
are quite similar.

Dave

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NetBSD 4.99.64 (GENERIC) #1: Thu Jun  5 23:54:09 EDT 2008
    
disciple@arcusvi:/Volumes/NetBSD-current_Tracking/usr/src/sys/arch/macppc/compile/obj/GENERIC
total memory = 320 MB
avail memory = 299 MB
timecounter: Timecounters tick every 10.000 msec
found openpic PIC at 80040000
OpenPIC Version 1.2: Supports 4 CPUs and 64 interrupt sources.
bootpath: /pci@f2000000/mac-io@17/ata-4@1f000/disk@0:10,/netbsd
mainbus0 (root)
cpu0 at mainbus0: 750 (Revision 3.0), ID 0 (primary)
cpu0: HID0 8090c0a4<EMCP,DOZE,DPM,ICE,DCE,SGE,BTIC,BHT>, powersave: 1
cpu0: 366.67 MHz, no-parity 512KB WB L2 cache (PB SRAM) at 2.5:1 ratio
uni_n0 at mainbus0 address 0xf8000000
ki2c0 at uni_n0 address 0xf8001000
iic0 at ki2c0: I2C bus
uninorth0 at mainbus0
pci0 at uninorth0 bus 0
pci0: i/o space, memory space enabled
pchb0 at pci0 dev 11 function 0
pchb0: Apple Computer UniNorth AGP Interface (rev. 0x00)
genfb0 at pci0 dev 16 function 0: ATI Technologies Rage L Mobility
genfb0: framebuffer at 0x91000000, size 800x600, depth 8, stride 800
wsdisplay0 at genfb0 kbdmux 1: console (default, vt100 emulation)
wsmux1: connecting to wsdisplay0
drm at genfb0 not configured
uninorth1 at mainbus0
pci1 at uninorth1 bus 0
pci1: i/o space, memory space enabled
pchb1 at pci1 dev 11 function 0
pchb1: Apple Computer UniNorth Host-PCI Bridge (rev. 0x00)
obio0 at pci1 dev 23 function 0: addr 0x80000000
obio0: enabling KeyLargo internal modem
i2s at obio0 offset 0x10000 not configured
zsc0 at obio0: irq 22,50
zstty0 at zsc0 channel 0
zstty1 at zsc0 channel 1
pmu0 at obio0 offset 0x16000 irq 47:  rev. 12
pmu0: initializing RTC
pmu0: initializing ADB
nadb0 at pmu0: Apple Desktop Bus
pmu0: power-mgt not configured
ki2c1 at obio0
iic1 at ki2c1: I2C bus
wdc0 at obio0 offset 0x1f000 irq 19, level triggered: DMA transfer
atabus0 at wdc0 channel 0
wdc1 at obio0 offset 0x20000 irq 20, level triggered: DMA transfer
atabus1 at wdc1 channel 0
wdc2 at obio0 offset 0x21000 irq 21, level triggered: DMA transfer
atabus2 at wdc2 channel 0
ohci0 at pci1 dev 24 function 0: Apple Computer KeyLargo USB Controller 
(rev. 0x00)
ohci0: interrupting at irq 27
ohci0: OHCI version 1.0
usb0 at ohci0: USB revision 1.0
ohci1 at pci1 dev 25 function 0: Apple Computer KeyLargo USB Controller 
(rev. 0x00)
ohci1: can't map mem space
uninorth2 at mainbus0
pci2 at uninorth2 bus 0
pci2: i/o space, memory space enabled
pchb2 at pci2 dev 11 function 0
pchb2: Apple Computer UniNorth Host-PCI Bridge (rev. 0x00)
gem0 at pci2 dev 15 function 0: Apple Computer GMAC Ethernet (rev. 0x00)
gem0: interrupting at irq 41
bmtphy0 at gem0 phy 0: BCM5201 10/100 media interface, rev. 2
bmtphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
gem0: Ethernet address 00:30:65:6b:e3:f2, 10KB RX fifo, 9KB TX fifo
biomask 80001fe netmask 80001fe ttymask 80001fe
timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
timecounter: Timecounter "mftb" frequency 16644884 Hz quality 100
sme_event_register: (cpu0) event registered (sensor= snum=8907424 type=110 
critval=0)
sme_events_init: events framework initialized for 'cpu0'
sme_event_register: (cpu0) event registered (sensor= snum=8907424 type=190 
critval=0)
uhub0 at usb0: Apple Computer OHCI root hub, class 9/0, rev 1.00/1.00, addr 
1
uhub0: 2 ports with 2 removable, self powered
adbkbd0 at nadb0 addr 2: PowerBook G3 keyboard
wskbd0 at adbkbd0: console keyboard, using wsdisplay0
wsmouse0 at adbkbd0 mux 0
adbms0 at nadb0 addr 3: EMP trackpad <tpad> 2-button, 400 dpi
wsmouse1 at adbms0 mux 0
adbbt0 at nadb0 addr 7: button device
wd0 at atabus0 drive 0: <TOSHIBA MK6014MAP>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 5729 MB, 12416 cyl, 15 head, 63 sec, 512 bytes/sect x 11733120 sectors
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66)
wd0(wdc0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66) 
(using DMA)
atapibus0 at atabus1: 2 targets
cd0 at atapibus0 drive 0: <MATSHITA CR-175, , 5AAE> cdrom removable
cd0: drive supports PIO mode 4, DMA mode 2
cd0(wdc1:0:0): using PIO mode 4, DMA mode 2 (using DMA)
Kernelized RAIDframe activated
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
sysmon: sensor 8907440, units 2616160, state 0, flags 0, device M-@
sysmon: sensor 8907440, units 2616160, state 0, flags 0, device M-@