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From: Igor Timkin <ivt@logger.gamma.ru>
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Date: Tue, 23 Sep 2003 17:47:52 +0400 (MSD)
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Subject: Re: Panic: Fatal trap 12: page fault while in kernel mode
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Another panic:
Fatal trap 12: page fault while in kernel mode
cpuid = 0; lapic.id = 01000000
fault virtual address   = 0x40
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc025a1f9
stack pointer           = 0x10:0xdc6bb984
frame pointer           = 0x10:0xdc6bba3c
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 15 (swi1: net)
trap number             = 12
panic: page fault
cpuid = 0; lapic.id = 01000000
boot() called on cpu#0

syncing disks, buffers remaining... ~Stopped at      siointr1+0xec:  jmp     siointr1+0x220
db> tr
siointr1(c2c69800,dc6c1adc,c2e873da,dc6c1ad4,c02f1ef1) at siointr1+0xec
siointr(c2c69800) at siointr+0x88
Xfastintr4() at Xfastintr4+0xba
--- interrupt, eip = 0xc01cf4c0, esp = 0xdc6c1b20, ebp = 0xdc6c1b50 ---
panic(c2e873da,6,0,c21a6000,c03535e0) at panic+0x60
freerq(c358a800,c2e873b2,e4,6,dc6c1bc4) at freerq+0x100
complete_rqe(c3434c24,396c,6e0d1def,1b90c284,dc6c1c14) at complete_rqe+0x6ca
bufdone(c3434c24,dc6c1c5c,c0198846,c0364e9c,c0364dc0) at bufdone+0x141
bufdonebio(c3434c24,dc6c1c44,c01983d2,c082a8c0,c2de8510) at bufdonebio+0x5e
biodone(c3434c24,c0318099,c2de8510,c3434c24,4000) at biodone+0xcc
g_dev_done(c2de8510,c0364dc8,0,0,4) at g_dev_done+0x8a
biodone(c2de8510,0,24c,c0311d4f,a) at biodone+0xcc
g_io_schedule_up(c21a6000,c21a4000,dc6c1d34,c01b7be1,0) at g_io_schedule_up+0xb8
g_up_procbody(0,dc6c1d48,0,0,0) at g_up_procbody+0x28
fork_exit(c0198d10,0,dc6c1d48) at fork_exit+0xb1
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xdc6c1d7c, ebp = 0 ---

Igor Timkin writes:
> I have panic:
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; lapic.id = 01000000
> fault virtual address   = 0x38
> fault code              = supervisor read, page not present
> instruction pointer     = 0x8:0xc025a224
> stack pointer           = 0x10:0xdc6b5b64
> frame pointer           = 0x10:0xdc6b5c1c
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, def32 1, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 13 (swi8: tty:sio clock)
> trap number             = 12
> panic: page fault
> cpuid = 0; lapic.id = 01000000
> boot() called on cpu#0
> 
> syncing disks, buffers remaining... (The system freeze there, enter break
> on serial console)~Stopped at      siointr1+0xec:  jmp     siointr1+0x220
> db> trace
> siointr1(c2c69800,c21a4974,c21a5980,dc6b2c90,c02f1ef1) at siointr1+0xec
> siointr(c2c69800) at siointr+0x88
> Xfastintr4() at Xfastintr4+0xba
> --- interrupt, eip = 0xc02e2254, esp = 0xdc6b2cdc, ebp = 0xdc6b2cdc ---
> cpu_idle(c03689c0,0,0,0,74d04) at cpu_idle+0x24
> idle_proc(0,dc6b2d48,6f726420,77732070,6d207061) at idle_proc+0x25
> fork_exit(c01b7fa0,0,dc6b2d48) at fork_exit+0xb1
> fork_trampoline() at fork_trampoline+0x8
> --- trap 0x1, eip = 0, esp = 0xdc6b2d7c, ebp = 0 ---
> db> panic
> panic: from debugger
> cpuid = 0; lapic.id = 01000000
> boot() called on cpu#0
> Uptime: 23h51m18s
> pfs_vncache_unload(): 1 entries remaining
> Automatic reboot in 15 seconds - press a key on the console to abort
> --> Press a key on the console to reboot,
> --> or switch off the system now.
> Rebooting...
> cpu_reset called on cpu#0
> Console: serial port
> BIOS drive C: is disk0
> 
> 
> FreeBSD news.gamma.ru 5.1-CURRENT FreeBSD 5.1-CURRENT #1: Mon Sep 22 13:23:42 MSD 2003     ivt@news.gamma.ru:/usr/src/sys/i386/compile/NEWS  i386
> 
> The same problem with 10 Sep and 18 Sep kernels.
> Motherboard is P2B-DS, 2x800 PIII. News server with heavy disk load.
> 
> ivt@news:/home/ivt:2:505>dmesg
> Copyright (c) 1992-2003 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 5.1-CURRENT #1: Mon Sep 22 13:23:42 MSD 2003
>     ivt@news.gamma.ru:/usr/src/sys/i386/compile/NEWS
> Preloaded elf kernel "/boot/kernel/kernel" at 0xc0405000.
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Intel Pentium III (801.82-MHz 686-class CPU)
>   Origin = "GenuineIntel"  Id = 0x683  Stepping = 3
>   Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
> real memory  = 1073729536 (1023 MB)
> avail memory = 1038938112 (990 MB)
> Programming 24 pins in IOAPIC #0
> IOAPIC #0 intpin 2 -> irq 0
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
>  cpu0 (BSP): apic id:  1, version: 0x00040011, at 0xfee00000
>  cpu1 (AP):  apic id:  0, version: 0x00040011, at 0xfee00000
>  io0 (APIC): apic id:  2, version: 0x00170011, at 0xfec00000
> Pentium Pro MTRR support enabled
> npx0: <math processor> on motherboard
> npx0: INT 16 interface
> pcibios: BIOS version 2.10
> Using $PIR table, 7 entries at 0xc00f0d20
> pcib0: <Intel 82443BX (440 BX) host to PCI bridge> at pcibus 0 on motherboard
> pci0: <PCI bus> on pcib0
> IOAPIC #0 intpin 19 -> irq 2
> IOAPIC #0 intpin 18 -> irq 10
> IOAPIC #0 intpin 17 -> irq 11
> IOAPIC #0 intpin 16 -> irq 12
> pcib1: <PCI-PCI bridge> at device 1.0 on pci0
> pci1: <PCI bus> on pcib1
> isab0: <PCI-ISA bridge> at device 4.0 on pci0
> isa0: <ISA bus> on isab0
> atapci0: <Intel PIIX4 UDMA33 controller> port 0xd800-0xd80f at device 4.1 on pci0
> ata0: at 0x1f0 irq 14 on atapci0
> ata0: [MPSAFE]
> ata1: at 0x170 irq 15 on atapci0
> ata1: [MPSAFE]
> pci0: <serial bus, USB> at device 4.2 (no driver attached)
> piix0 port 0xe800-0xe80f at device 4.3 on pci0
> Timecounter "PIIX" frequency 3579545 Hz quality 0
> ahc0: <Adaptec aic7890/91 Ultra2 SCSI adapter> port 0xd000-0xd0ff mem 0xe1000000-0xe1000fff irq 2 at device 6.0 on pci0
> aic7890/91: Ultra2 Wide Channel A, SCSI Id=7, 32/253 SCBs
> ahc1: <Adaptec 2940 Ultra SCSI adapter> port 0xb800-0xb8ff mem 0xe0800000-0xe0800fff irq 2 at device 9.0 on pci0
> aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs
> ahc2: <Adaptec 2940 Ultra SCSI adapter> port 0xb400-0xb4ff mem 0xe0000000-0xe0000fff irq 10 at device 10.0 on pci0
> aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs
> fxp0: <Intel 82558 Pro/100 Ethernet> port 0xb000-0xb01f mem 0xdf800000-0xdf8fffff,0xe3000000-0xe3000fff irq 11 at device 11.0 on pci0
> fxp0: Ethernet address 00:a0:c9:a3:5a:85
> miibus0: <MII bus> on fxp0
> inphy0: <i82555 10/100 media interface> on miibus0
> inphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
> fxp1: <Intel 82558 Pro/100 Ethernet> port 0xa800-0xa81f mem 0xdf000000-0xdf0fffff,0xe2000000-0xe2000fff irq 12 at device 12.0 on pci0
> fxp1: Ethernet address 00:90:27:41:3d:89
> miibus1: <MII bus> on fxp1
> inphy1: <i82555 10/100 media interface> on miibus1
> inphy1:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
> orm0: <Option ROMs> at iomem 0xdc000-0xe17ff,0xd8000-0xd87ff,0xd0000-0xd6fff,0xc8000-0xcc7ff,0xc0000-0xc7fff on isa0
> pmtimer0 on isa0
> atkbdc0: <Keyboard controller (i8042)> at port 0x64,0x60 on isa0
> atkbd0: <AT Keyboard> irq 1 on atkbdc0
> kbd0 at atkbd0
> fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> at port 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
> sc0: <System console> at flags 0x100 on isa0
> sc0: VGA <16 virtual consoles, flags=0x100>
> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
> sio0: type 16550A, console
> sio1 at port 0x2f8-0x2ff irq 3 on isa0
> sio1: type 16550A
> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
> unknown: <PNP0501> can't assign resources (port)
> unknown: <PNP0501> can't assign resources (port)
> unknown: <PNP0700> can't assign resources (port)
> unknown: <PNP0303> can't assign resources (port)
> APIC_IO: Testing 8254 interrupt delivery
> APIC_IO: routing 8254 via IOAPIC #0 intpin 2
> 
> Timecounters tick every 10.000 msec
> ipfw2 initialized, divert disabled, rule-based forwarding enabled, default to deny, logging disabled
> GEOM: create disk ad0 dp=0xc2c85d70
> ad0: 12416MB <QUANTUM FIREBALL CR13.0A> [25228/16/63] at ata0-master UDMA33
> Waiting 2 seconds for SCSI devices to settle
> GEOM: create disk da0 dp=0xc2ddd450
> GEOM: create disk da1 dp=0xc2dbd850
> GEOM: create disk da2 dp=0xc2dbdc50
> GEOM: create disk da3 dp=0xc2dd0c50
> GEOM: create disk da4 dp=0xc2de5450
> GEOM: create disk da5 dp=0xc2dde450
> GEOM: create disk da6 dp=0xc2dbd450
> GEOM: create disk da7 dp=0xc2ddf450
> da6 at ahc2 bus 0 target 11 lun 0
> da6: <DEC RZ29B    (C) DEC 0014> Fixed Direct Access SCSI-2 device
> da6: 20.000MB/s transfers (10.000MHz, offset 8, 16bit), Tagged Queueing Enabled
> da6: 4091MB (8380080 512 byte sectors: 255H 63S/T 521C)
> da7 at ahc2 bus 0 target 15 lun 0
> da7: <SEAGATE ST15150W 0023> Fixed Direct Access SCSI-2 device
> da7: 20.000MB/s transfers (10.000MHz, offset 8, 16bit), Tagged Queueing Enabled
> da7: 4095MB (8388315 512 byte sectors: 255H 63S/T 522C)
> da4 at ahc0 bus 0 target 2 lun 0
> da4: <IBM DDYS-T36950N S80D> Fixed Direct Access SCSI-3 device
> da4: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing Enabled
> da4: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C)
> da5 at ahc0 bus 0 target 3 lun 0
> da5: <IBM DDYS-T36950N S96H> Fixed Direct Access SCSI-3 device
> da5: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing Enabled
> da5: 35003MB (71687340 512 byte sectors: 255H 63S/T 4462C)
> da3 at ahc0 bus 0 target 0 lun 0
> da3: <IBM DDRS-34560D DC1B> Fixed Direct Access SCSI-2 device
> da3: 80.000MB/s transfers (40.000MHz, offset 15, 16bit), Tagged Queueing Enabled
> da3: 4357MB (8925000 512 byte sectors: 255H 63S/T 555C)
> da0 at ahc1 bus 0 target 0 lun 0
> da0: <WDIGTL ENTERPRISE 1.80> Fixed Direct Access SCSI-2 device
> da0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
> da0: 4157MB (8515173 512 byte sectors: 255H 63S/T 530C)
> da1 at ahc1 bus 0 target 1 lun 0
> da1: <WDIGTL ENTERPRISE 1.80> Fixed Direct Access SCSI-2 device
> da1: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
> da1: 2077MB (4254819 512 byte sectors: 255H 63S/T 264C)
> da2 at ahc1 bus 0 target 2 lun 0
> da2: <WDIGTL ENTERPRISE 1.91> Fixed Direct Access SCSI-2 device
> da2: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
> da2: 2077MB (4254819 512 byte sectors: 255H 63S/T 264C)
> SMP: AP CPU #1 Launched!
> Mounting root from ufs:/dev/da0s1a
> WARNING: / was not properly dismounted
> /news/dsk/04: correcting fs_sblockloc from 65536 to 8192
> fxp0: Microcode loaded, int_delay: 1000 usec  bundle_max: 0
> fxp0: Microcode loaded, int_delay: 1000 usec  bundle_max: 0
> fxp0: Microcode loaded, int_delay: 1000 usec  bundle_max: 0
> fxp0: Microcode loaded, int_delay: 1000 usec  bundle_max: 0
> fxp1: Microcode loaded, int_delay: 1000 usec  bundle_max: 0
> ivt@news:/home/ivt:2:505>mptable -verbose
> 
> ===============================================================================
> 
> MPTable, version 2.0.15
> 
>  looking for EBDA pointer @ 0x040e, NOT found
>  searching CMOS 'top of mem' @ 0x0009fc00 (639K)
>  searching BIOS @ 0x000f0000
> 
>  MP FPS found in BIOS @ physical addr: 0x000f6e90
> 
> -------------------------------------------------------------------------------
> 
> MP Floating Pointer Structure:
> 
>   location:                     BIOS
>   physical address:             0x000f6e90
>   signature:                    '_MP_'
>   length:                       16 bytes
>   version:                      1.4
>   checksum:                     0xa7
>   mode:                         Virtual Wire
> 
> -------------------------------------------------------------------------------
> 
> MP Config Table Header:
> 
>   physical address:             0x000f6a80
>   signature:                    'PCMP'
>   base table length:            260
>   version:                      1.4
>   checksum:                     0x09
>   OEM ID:                       'OEM00000'
>   Product ID:                   'PROD00000000'
>   OEM table pointer:            0x00000000
>   OEM table size:               0
>   entry count:                  24
>   local APIC address:           0xfee00000
>   extended table length:        124
>   extended table checksum:      178
> 
> -------------------------------------------------------------------------------
> 
> MP Config Base Table Entries:
> 
> --
> Processors:     APIC ID Version State           Family  Model   Step    Flags
>                  1       0x11    BSP, usable     6       8       3       0x387fbff
>                  0       0x11    AP, usable      6       8       3       0x383fbff
> --
> Bus:            Bus ID  Type
>                  0       PCI
>                  1       ISA
> --
> I/O APICs:      APIC ID Version State           Address
>                  2       0x11    usable          0xfec00000
> --
> I/O Ints:       Type    Polarity    Trigger     Bus ID   IRQ    APIC ID PIN#
>                 ExtINT   conforms    conforms        1     0          2    0
>                 INT      conforms    conforms        1     1          2    1
>                 INT      conforms    conforms        1     0          2    2
>                 INT      conforms    conforms        1     3          2    3
>                 INT      conforms    conforms        1     4          2    4
>                 INT      conforms    conforms        1     5          2    5
>                 INT      conforms    conforms        1     6          2    6
>                 INT      conforms    conforms        1     7          2    7
>                 INT      conforms    conforms        1     8          2    8
>                 INT      conforms    conforms        1     9          2    9
>                 INT      conforms    conforms        1    14          2   14
>                 INT     active-lo       level        0   4:D          2   19
>                 INT     active-lo       level        0   6:A          2   19
>                 INT     active-lo       level        0   9:A          2   19
>                 INT     active-lo       level        0  10:A          2   18
>                 INT     active-lo       level        0  11:A          2   17
>                 INT     active-lo       level        0  12:A          2   16
> --
> Local Ints:     Type    Polarity    Trigger     Bus ID   IRQ    APIC ID PIN#
>                 ExtINT  active-hi        edge        1     0        255    0
>                 NMI     active-hi        edge        1     0        255    1
> 
> -------------------------------------------------------------------------------
> 
> MP Config Extended Table Entries:
> 
> --
> System Address Space
>  bus ID: 0 address type: I/O address
>  address base: 0x0
>  address range: 0x10000
> --
> System Address Space
>  bus ID: 0 address type: memory address
>  address base: 0x40000000
>  address range: 0xa1f00000
> --
> System Address Space
>  bus ID: 0 address type: prefetch address
>  address base: 0xe1f00000
>  address range: 0x6100000
> --
> System Address Space
>  bus ID: 0 address type: memory address
>  address base: 0xe8000000
>  address range: 0x18000000
> --
> System Address Space
>  bus ID: 0 address type: memory address
>  address base: 0xa0000
>  address range: 0x20000
> --
> Bus Heirarchy
>  bus ID: 1 bus info: 0x01 parent bus ID: 0
> --
> Compatibility Bus Address
>  bus ID: 0 address modifier: add
>  predefined range: 0x00000000
> --
> Compatibility Bus Address
>  bus ID: 0 address modifier: add
>  predefined range: 0x00000001
> 
> ===============================================================================
> 
> ivt@news:/home/ivt:2:506>strings /boot/kernel/kernel  | grep ^___ | sed -e 's/^___//'
> #
> # GENERIC -- Generic kernel configuration file for FreeBSD/i386
> #
> # For more information on this file, please read the handbook section on
> # Kernel Configuration Files:
> #
> #    http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
> #
> # The handbook is also available locally in /usr/share/doc/handbook
> # if you've installed the doc distribution, otherwise always see the
> # FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
> # latest information.
> #
> # An exhaustive list of options and more detailed explanations of the
> # device lines is also present in the ../../conf/NOTES and NOTES files.
> # If you are in doubt as to the purpose or necessity of a line, check first
> # in NOTES.
> #
> # $FreeBSD: src/sys/i386/conf/GENERIC,v 1.392 2003/09/19 20:04:55 joerg Exp $
> machine         i386
> #cpu            I486_CPU
> #cpu            I586_CPU
> cpu             I686_CPU
> ident           NEWS
> #To statically compile in device wiring instead of /boot/device.hints
> #hints          "GENERIC.hints"         #Default places to look for devices.
> makeoptions     DEBUG=-g                #Build kernel with gdb(1) debug symbols
> options         SCHED_4BSD              #4BSD scheduler
> options         INET                    #InterNETworking
> #options        INET6                   #IPv6 communications protocols
> options         FFS                     #Berkeley Fast Filesystem
> options         SOFTUPDATES             #Enable FFS soft updates support
> #options        UFS_ACL                 #Support for access control lists
> #options        UFS_DIRHASH             #Improve performance on big directories
> #options        MD_ROOT                 #MD is a potential root device
> #options        NFSCLIENT               #Network Filesystem Client
> #options        NFSSERVER               #Network Filesystem Server
> #options        NFS_ROOT                #NFS usable as /, requires NFSCLIENT
> #options        MSDOSFS                 #MSDOS Filesystem
> #options        CD9660                  #ISO 9660 Filesystem
> options         PROCFS                  #Process filesystem (requires PSEUDOFS)
> options         PSEUDOFS                #Pseudo-filesystem framework
> options         COMPAT_43               #Compatible with BSD 4.3 [KEEP THIS!]
> options         COMPAT_FREEBSD4         #Compatible with FreeBSD4
> options         SCSI_DELAY=2000         #Delay (in ms) before probing SCSI
> options         KTRACE                  #ktrace(1) support
> options         SYSVSHM                 #SYSV-style shared memory
> options         SYSVMSG                 #SYSV-style message queues
> options         SYSVSEM                 #SYSV-style semaphores
> options         _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
> options         KBD_INSTALL_CDEV        # install a CDEV entry in /dev
> options         AHC_REG_PRETTY_PRINT    # Print register bitfields in debug
>                                         # output.  Adds ~128k to driver.
> options         AHD_REG_PRETTY_PRINT    # Print register bitfields in debug
>                                         # output.  Adds ~215k to driver.
> # Debugging for use in -current
> options         DDB                     #Enable the kernel debugger
> #options        INVARIANTS              #Enable calls of extra sanity checking
> #options        INVARIANT_SUPPORT       #Extra sanity checks of internal structures, required by INVARIANTS
> #options        WITNESS                 #Enable checks to detect deadlocks and cycles
> options         WITNESS_SKIPSPIN        #Don't run witness on spinlocks for speed
> # To make an SMP kernel, the next two are needed
> options         SMP                     # Symmetric MultiProcessor Kernel
> options         APIC_IO                 # Symmetric (APIC) I/O
> device          isa
> #device         eisa
> device          pci
> # Floppy drives
> device          fdc
> # ATA and ATAPI devices
> device          ata
> device          atadisk                 # ATA disk drives
> #device         ataraid                 # ATA RAID drives
> #device         atapicd                 # ATAPI CDROM drives
> #device         atapifd                 # ATAPI floppy drives
> #device         atapist                 # ATAPI tape drives
> options         ATA_STATIC_ID           #Static device numbering
> # SCSI Controllers
> #device         ahb             # EISA AHA1742 family
> device          ahc             # AHA2940 and onboard AIC7xxx devices
> #device         ahd             # AHA39320/29320 and onboard AIC79xx devices
> #device         amd             # AMD 53C974 (Tekram DC-390(T))
> #device         isp             # Qlogic family
> #device         mpt             # LSI-Logic MPT-Fusion
> #device         ncr             # NCR/Symbios Logic
> #device         sym             # NCR/Symbios Logic (newer chipsets + those of `ncr')
> #device         trm             # Tekram DC395U/UW/F DC315U adapters
> #device         adv             # Advansys SCSI adapters
> #device         adw             # Advansys wide SCSI adapters
> #device         aha             # Adaptec 154x SCSI adapters
> #device         aic             # Adaptec 15[012]x SCSI adapters, AIC-6[23]60.
> #device         bt              # Buslogic/Mylex MultiMaster SCSI adapters
> #device         ncv             # NCR 53C500
> #device         nsp             # Workbit Ninja SCSI-3
> #device         stg             # TMC 18C30/18C50
> # SCSI peripherals
> device          scbus           # SCSI bus (required for SCSI)
> #device         ch              # SCSI media changers
> device          da              # Direct Access (disks)
> #device         sa              # Sequential Access (tape etc)
> #device         cd              # CD
> device          pass            # Passthrough device (direct SCSI access)
> device          ses             # SCSI Environmental Services (and SAF-TE)
> # RAID controllers interfaced to the SCSI subsystem
> #device         amr             # AMI MegaRAID
> #device         asr             # DPT SmartRAID V, VI and Adaptec SCSI RAID
> #device         ciss            # Compaq Smart RAID 5*
> #device         dpt             # DPT Smartcache III, IV - See NOTES for options
> #device         iir             # Intel Integrated RAID
> #device         ips             # IBM (Adaptec) ServeRAID
> #device         mly             # Mylex AcceleRAID/eXtremeRAID
> # RAID controllers
> #device         aac             # Adaptec FSA RAID
> #device         aacp            # SCSI passthrough for aac (requires CAM)
> #device         ida             # Compaq Smart RAID
> #device         mlx             # Mylex DAC960 family
> #device         pst             # Promise Supertrak SX6000
> #device         twe             # 3ware ATA RAID
> # atkbdc0 controls both the keyboard and the PS/2 mouse
> device          atkbdc          # AT keyboard controller
> device          atkbd           # AT keyboard
> #device         psm             # PS/2 mouse
> device          vga             # VGA video card driver
> device          splash          # Splash screen and screen saver support
> # syscons is the default console driver, resembling an SCO console
> device          sc
> # Enable this for the pcvt (VT220 compatible) console driver
> #device         vt
> #options        XSERVER                 # support for X server on a vt console
> #options        FAT_CURSOR              # start with block cursor
> #device         agp             # support several AGP chipsets
> # Floating point support - do not disable.
> device          npx
> # Power management support (see NOTES for more options)
> #device         apm
> # Add suspend/resume support for the i8254.
> device          pmtimer
> # PCCARD (PCMCIA) support
> # Pcmcia and cardbus bridge support
> #device         cbb                     # cardbus (yenta) bridge
> #device         pcic                    # ExCA ISA and PCI bridges
> #device         pccard                  # PC Card (16-bit) bus
> #device         cardbus                 # CardBus (32-bit) bus
> # Serial (COM) ports
> device          sio             # 8250, 16[45]50 based serial ports
> # Parallel port
> #device         ppc
> #device         ppbus           # Parallel port bus (required)
> #device         lpt             # Printer
> #device         plip            # TCP/IP over parallel
> #device         ppi             # Parallel port interface device
> #device         vpo             # Requires scbus and da
> # If you've got a "dumb" serial or parallel PCI card that is
> # supported by the puc(4) glue driver, uncomment the following
> # line to enable it (connects to the sio and/or ppc drivers):
> #device         puc
> # PCI Ethernet NICs.
> #device         de              # DEC/Intel DC21x4x (``Tulip'')
> #device         em              # Intel PRO/1000 adapter Gigabit Ethernet Card
> #device         txp             # 3Com 3cR990 (``Typhoon'')
> #device         vx              # 3Com 3c590, 3c595 (``Vortex'')
> # PCI Ethernet NICs that use the common MII bus controller code.
> # NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
> device          miibus          # MII bus support
> #device         bfe             # Broadcom BCM440x 10/100 ethernet
> #device         bge             # Broadcom BCM570xx Gigabit Ethernet
> #device         dc              # DEC/Intel 21143 and various workalikes
> device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)
> #device         pcn             # AMD Am79C97x PCI 10/100 (precedence over 'lnc')
> #device         re              # RealTek 8139C+/8169/8169S/8110S
> #device         rl              # RealTek 8129/8139
> #device         sf              # Adaptec AIC-6915 (``Starfire'')
> #device         sis             # Silicon Integrated Systems SiS 900/SiS 7016
> #device         sk              # SysKonnect SK-984x and SK-982x gigabit ethernet
> #device         ste             # Sundance ST201 (D-Link DFE-550TX)
> #device         ti              # Alteon Networks Tigon I/II gigabit ethernet
> #device         tl              # Texas Instruments ThunderLAN
> #device         tx              # SMC EtherPower II (83c170 ``EPIC'')
> #device         vr              # VIA Rhine, Rhine II
> #device         wb              # Winbond W89C840F
> #device         xl              # 3Com 3c90x (``Boomerang'', ``Cyclone'')
> # ISA Ethernet NICs.  pccard nics included.
> #device         cs              # Crystal Semiconductor CS89x0 NIC
> # 'device ed' requires 'device miibus'
> #device         ed              # NE[12]000, SMC Ultra, 3c503, DS8390 cards
> #device         ex              # Intel EtherExpress Pro/10 and Pro/10+
> #device         ep              # Etherlink III based cards
> #device         fe              # Fujitsu MB8696x based cards
> #device         ie              # EtherExpress 8/16, 3C507, StarLAN 10 etc.
> #device         lnc             # NE2100, NE32-VL Lance Ethernet cards
> #device         sn              # SMC's 9000 series of ethernet chips
> #device         xe              # Xircom pccard ethernet
> # ISA devices that use the old ISA shims
> #device         le
> # Wireless NIC cards
> #device         wlan            # 802.11 support
> #device         an              # Aironet 4500/4800 802.11 wireless NICs.
> #device         awi             # BayStack 660 and others
> #device         wi              # WaveLAN/Intersil/Symbol 802.11 wireless NICs.
> #device         wl              # Older non 802.11 Wavelan wireless NIC.
> # Pseudo devices - the number indicates how many units to allocate.
> device          random          # Entropy device
> device          loop            # Network loopback
> device          ether           # Ethernet support
> #device         sl              # Kernel SLIP
> #device         ppp             # Kernel PPP
> #device         tun             # Packet tunnel.
> device          pty             # Pseudo-ttys (telnet etc)
> #device         md              # Memory "disks"
> #device         gif             # IPv6 and IPv4 tunneling
> #device         faith           # IPv6-to-IPv4 relaying (translation)
> # The `bpf' device enables the Berkeley Packet Filter.
> # Be aware of the administrative consequences of enabling this!
> device          bpf             # Berkeley packet filter
> # USB support
> #device         uhci            # UHCI PCI->USB interface
> #device         ohci            # OHCI PCI->USB interface
> #device         usb             # USB Bus (required)
> #device         udbp            # USB Double Bulk Pipe devices
> #device         ugen            # Generic
> #device         uhid            # "Human Interface Devices"
> #device         ukbd            # Keyboard
> #device         ulpt            # Printer
> #device         umass           # Disks/Mass storage - Requires scbus and da
> #device         ums             # Mouse
> #device         urio            # Diamond Rio 500 MP3 player
> #device         uscanner        # Scanners
> # USB Ethernet, requires mii
> #device         aue             # ADMtek USB ethernet
> #device         axe             # ASIX Electronics USB ethernet
> #device         cue             # CATC USB ethernet
> #device         kue             # Kawasaki LSI USB ethernet
> # FireWire support
> #device         firewire        # FireWire bus code
> #device         sbp             # SCSI over FireWire (Requires scbus and da)
> #device         fwe             # Ethernet over FireWire (non-standard!)
> device          vlan            #VLAN support
> options         INCLUDE_CONFIG_FILE     # Include this file in kernel
> options         IPFIREWALL              #firewall
> options         IPFIREWALL_FORWARD      #enable transparent proxy support
> options         NMBCLUSTERS=4096
> options         DDB_UNATTENDED
> options         BREAK_TO_DEBUGGER       #a BREAK on a comconsole goes to
>                                         #DDB, if available.
> makeoptions     MODULES_OVERRIDE="vinum"
> 
> Kernel config is GENERIC without unused devices and with SMP.
> 
> 
> 
> Markus Brueffer writes:
> > Hi,
> > 
> > I was playing around with CAM and got this reproducible panic:
> > 
> > Fatal trap 12: page fault while in kernel mode
> > fault virtual address   = 0x46
> > fault code              = supervisor read, page not present
> > instruction pointer     = 0x:0xc03962fe
> > stack pointer           = 0x10:0xd835b9b4
> > frame pointer           = 0x10:0xd835ba24
> > code segment            = base 0x0, limit 0xfffff, type 0x1b
> >                         = DPL 0, pres 1, def32 1, gran 1
> > processor eflags        = interrupt enabled, resume, IOPL = 0
> > current process         = 585 (dvdtest)
> > kernel: type 12 trap, code=0
> > Stoppes at generic_bcopy+0x1a: repe mocsl (%esi),%es:(%edi)
> > db> tr
> > generic_bcopy(c4034780,c4205000,d835ba58,c0136c42,c4034780) at 
> > generic_bcopy+0x1a
> > sbp_action(c4034780,c4205000,c0136953,c41f1400,c4205000) at sbp_action+0x18
> > xpt_run_dev_sendq(c4034740,c41f1418,0,d835ba8c,c027895f)at 
> > xpt_run_dev_dendq+0x192
> > xtp_action(c4205000,0,c41f1430,c4202000,c4205000) at xpt_action+0x238
> > cam_periph_runccb(c4205000,0,2,1,c40fb960) at cam_periph_runccb+0x48
> > passsendcbb(c41e6500,c4205000,c4203400,c462920) at passsendccb+0xc7
> > passioctl(c4213100,c2601502,c4203400,3,c401fbe0) at passioctl+0xf0
> > spec_ioctl(d835bb7c,d835bc28,c02c34a1,d835bb7c,c025454d) at spec_ioctl+0x19e
> > spec_vnoperate(d835bb7c,c025454d,c0460ea0,1,c0447b00) at spec_vnoperate+0x18
> > vn_ioctl(c422c330,c2601502,c4203400,c42c9480,c401fbe0) at vn_ioctl+0x1a1
> > ioctl(c401fbe0,d835bd10,c03f9491,3ec,3) at ioctl+0x475
> > syscall(2f,2f,2f,bfbffb90,bfbff910) at syscall+0x273
> > Xint0x80_syscall() at Xint0x80_syscall+0x1d
> > --- syscall (54, FreeBSD ELF32, ioctl), eip = 0x281a354f, esp = 0xbfbff8dc, 
> > ebp = 0xbfbff8f8 ---
> > db >
> > 
> > Kernel is from this morning with up to date sources and ATAPICAM built in:
> > 
> > FreeBSD cheops.phoenix 5.1-CURRENT FreeBSD 5.1-CURRENT #7: Sun Sep 21 14:05:38 
> > CEST 2003     brueffer@cheops.phoenix:/usr/obj/usr/src/sys/CHEOPS  i386
> > 
> > If you need further information or the source that caused the panic, please 
> > let me know.
> > 
> > Regards,
> > 
> > Markus
> > 
> > -- 
> > GPG Pub-Key    : http://www.phoenix-systems.de/mbrueffer.asc
> > GPG Fingerprint: 3F9B EBE8 F290 E5CC 1447 8760 D48D 1072 78F8 A8D4
> > GPG Key ID     : 0x78F8A8D4
> -- End of PGP section, PGP failed!
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