Re: page fault in RAMDISK_CD kernel on latest snapshot

[Jason Crawford <jasonrcrawford_(_at_)_gmail_(_dot_)_com>]

Further investigation into the problem, I have found a few interesting
things. Following the advice of someone who responded to me off list,
I installed 3.6-stable, which worked perfectly, then put that
snapshot's GENERIC kernel in / and booted that, got the same error,
and got dropped into a ddb> console. I then did a ps and trace, which
I only have a screen shot saved in .bmp format. I was going to do it
again with serial console recording, however the next time I booted
current GENERIC, it booted just fine. To make the matter more
confusing, RAMDISK_CD still gives the same error (and doesn't give me
a ddb> console), however GENERIC now works. I have the .bmp screen
shot of trace and ps, however this list strips attachments, so I'll
have to send it to whoever wants it off list.


On Tue, 1 Feb 2005 11:54:12 -0500, Jason Crawford
<jasonrcrawford_(_at_)_gmail_(_dot_)_com> wrote:
> I take it by the lack of response that at this point there is no
> workaround? I like keep up with current and test out any new features
> that I'd like to make sure are mature for 3.7, however I cannot seem
> to install current until I figure out a workaround for this.
> 
> 
> On Mon, 31 Jan 2005 17:56:35 -0500, Jason Crawford
> <jasonrcrawford_(_at_)_gmail_(_dot_)_com> wrote:
> > I am trying to install the latest snapshot from ftp.usa.openbsd.org
> > for i386, and I get a page fault before it shows the install menu. I
> > have 3.6-stable running fine on the exact same hardware, both dmesg's
> > below.
> >
> > here is serial output from latest snapshot:
> > >> OpenBSD/i386 CDBOOT 1.00
> > boot>
> > booting cd0a:/3.6/i386/bsd.rd: 4096324|+736940/ [52-+135184\+119142-]=0x4da310
> > entry point at 0x100120
> >
> > Copyright (c) 1982, 1986, 1989, 1991, 1993
> >         The Regents of the University of California.  All rights reserved.
> > Copyright (c) 1995-2005 OpenBSD. All rights reserved.  http://www.OpenBSD.org
> >
> > OpenBSD 3.6-current (RAMDISK_CD) #537: Fri Jan 28 22:14:33 MST 2005
> >     pvalchev_(_at_)_i386_(_dot_)_openbsd_(_dot_)_org:/usr/src/sys/arch/i386/compile/RAMDISK_CD
> > cpu0: Intel(R) Pentium(R) 4 CPU 3.20GHz ("GenuineIntel" 686-class) 3.20 GHz
> > cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,PNI
> > real mem  = 267952128 (261672K)
> > avail mem = 238997504 (233396K)
> > using 3296 buffers containing 13500416 bytes (13184K) of memory
> > mainbus0 (root)
> > bios0 at mainbus0: AT/286+(4f) BIOS, date 04/21/04, BIOS32 rev. 0 @ 0xfd880
> > apm0 at bios0: Power Management spec V1.2
> > pcibios0 at bios0: rev 2.1 @ 0xfd880/0x780
> > pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdf30/176 (9 entries)
> > pcibios0: PCI Interrupt Router at 000:07:0 ("Intel 82371FB ISA" rev 0x00)
> > pcibios0: PCI bus #1 is the last bus
> > bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1a00! 0xca000/0x1000
> > 0xdc000/0x4000! 0xe4000/0x4000!
> > cpu0 at mainbus0
> > pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
> > pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x01
> > ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x01
> > pci1 at ppb0 bus 1
> > pcib0 at pci0 dev 7 function 0 "Intel 82371AB PIIX4 ISA" rev 0x08
> > pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA,
> > channel 0 configured to compatibility, channel 1 configured to
> > compatibility
> > pciide0: channel 0 ignored (disabled)
> > atapiscsi0 at pciide0 channel 1 drive 0
> > scsibus0 at atapiscsi0: 2 targets
> > cd0 at scsibus0 targ 0 lun 0: <NECVMWar, VMware IDE CDR10, 1.00> SCSI0
> > 5/cdrom removable
> > cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
> > "Intel 82371AB Power Mgmt" rev 0x08 at pci0 dev 7 function 3 not configured
> > vga1 at pci0 dev 15 function 0 "VMware Virtual SVGA II" rev 0x00
> > wsdisplay0 at vga1: console (80x25, vt100 emulation)
> > bha3 at pci0 dev 16 function 0 "BusLogic MultiMaster" rev 0x01: irq 9,
> > BusLogic 9xxC SCSI
> > bha3: model BT-958, firmware 5.07B
> > bha3: sync, parity
> > scsibus1 at bha3: 8 targets
> > sd0 at scsibus1 targ 0 lun 0: <VMware,, VMware Virtual S, 1.0> SCSI2
> > 0/direct fixed
> > sd0: 4096MB, 1441794 cyl, 10 head, 0 sec, 512 bytes/sec, 8388608 sec total
> > le1 at pci0 dev 17 function 0 "AMD 79c970 PCnet-PCI" rev 0x10: irq 11
> > le1: address 00:0c:29:f2:e3:30
> > le1: 8 receive buffers, 2 transmit buffers
> > isa0 at pcib0
> > isadma0 at isa0
> > pckbc0 at isa0 port 0x60/5
> > pckbd0 at pckbc0 (kbd slot)
> > pckbc0: using irq 1 for kbd slot
> > wskbd0 at pckbd0 (mux 1 ignored for console): console keyboard, using wsdisplay0
> > npx0 at isa0 port 0xf0/16: using exception 16
> > pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> > pccom0: console
> > pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
> > fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
> > fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
> > biomask f7e5 netmask ffe5 ttymask ffe7
> > rd0: fixed, 3800 blocks
> > root on rd0a
> > rootdev=0x1100 rrootdev=0x2f00 rawdev=0x2f02
> > uvm_fault(0xd0501a00, 0x0, 0, 3) -> e
> > fatal page fault in supervisor mode
> > trap type 6 code 2 eip d017cff5 cs 8 eflags 10206 cr2 34 cpl 0
> > panic: trap type 6, code=2, pc=d017cff5
> > syncing disks... done
> >
> > dumping to dev 1101, offset 0
> > dump error 19
> >
> > rebooting...
> >
> > here is dmesg from 3.6-stable running just fine on same hardware:
> > OpenBSD 3.6-stable (GENERIC) #0: Mon Jan 31 15:37:51 EST 2005
> >     jason_(_at_)_obsd36patch_(_dot_)_hcpnet_(_dot_)_org:/usr/src/sys/arch/i386/compile/GENERIC
> > cpu0: Intel(R) Pentium(R) 4 CPU 3.20GHz ("GenuineIntel" 686-class) 3.20 GHz
> > cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CF
> > LUSH,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,PNI
> > real mem  = 267952128 (261672K)
> > avail mem = 237613056 (232044K)
> > using 3296 buffers containing 13500416 bytes (13184K) of memory
> > mainbus0 (root)
> > bios0 at mainbus0: AT/286+(6f) BIOS, date 04/21/04, BIOS32 rev. 0 @ 0xfd880
> > apm0 at bios0: Power Management spec V1.2
> > apm0: AC on, battery charge unknown
> > pcibios0 at bios0: rev 2.1 @ 0xfd880/0x780
> > pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdf30/176 (9 entries)
> > pcibios0: PCI Interrupt Router at 000:07:0 ("Intel 82371FB ISA" rev 0x00)
> > pcibios0: PCI bus #1 is the last bus
> > bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1a00! 0xca000/0x1000 0xdc000/0x4000! 0
> > xe4000/0x4000!
> > cpu0 at mainbus0
> > pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
> > pchb0 at pci0 dev 0 function 0 "Intel 82443BX AGP" rev 0x01
> > ppb0 at pci0 dev 1 function 0 "Intel 82443BX AGP" rev 0x01
> > pci1 at ppb0 bus 1
> > pcib0 at pci0 dev 7 function 0 "Intel 82371AB PIIX4 ISA" rev 0x08
> > pciide0 at pci0 dev 7 function 1 "Intel 82371AB IDE" rev 0x01: DMA, channel 0 co
> > nfigured to compatibility, channel 1 configured to compatibility
> > pciide0: channel 0 ignored (disabled)
> > atapiscsi0 at pciide0 channel 1 drive 0
> > scsibus0 at atapiscsi0: 2 targets
> > cd0 at scsibus0 targ 0 lun 0: <NECVMWar, VMware IDE CDR10, 1.00> SCSI0 5/cdrom r
> > emovable
> > cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
> > "Intel 82371AB Power Mgmt" rev 0x08 at pci0 dev 7 function 3 not configured
> > vga1 at pci0 dev 15 function 0 "VMware Virtual SVGA II" rev 0x00
> > wsdisplay0 at vga1: console (80x25, vt100 emulation)
> > wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> > bha3 at pci0 dev 16 function 0 "BusLogic MultiMaster" rev 0x01: irq 11, BusLogic
> >  9xxC SCSI
> > bha3: model BT-958, firmware 5.07B
> > bha3: sync, parity
> > scsibus1 at bha3: 8 targets
> > sd0 at scsibus1 targ 0 lun 0: <VMware,, VMware Virtual S, 1.0> SCSI2 0/direct fi
> > xed
> > sd0: 4096MB, 1441794 cyl, 10 head, 0 sec, 512 bytes/sec, 8388608 sec total
> > le1 at pci0 dev 17 function 0 "AMD 79c970 PCnet-PCI" rev 0x10: irq 10
> > le1: address 00:0c:29:99:14:83
> > le1: 8 receive buffers, 2 transmit buffers
> > isa0 at pcib0
> > isadma0 at isa0
> > 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
> > pmsi0 at pckbc0 (aux slot)
> > pckbc0: using irq 12 for aux slot
> > wsmouse0 at pmsi0 mux 0
> > pcppi0 at isa0 port 0x61
> > midi0 at pcppi0: <PC speaker>
> > sysbeep0 at pcppi0
> > lpt0 at isa0 port 0x378/4 irq 7
> > npx0 at isa0 port 0xf0/16: using exception 16
> > pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> > pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
> > fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
> > fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
> > biomask eb65 netmask ef65 ttymask ffe7
> > pctr: user-level cycle counter enabled
> > dkcsum: sd0 matched BIOS disk 80
> > root on sd0a
> > rootdev=0x400 rrootdev=0xd00 rawdev=0xd02