AHC Panic

Wed Apr 19 02:21:43 UTC 2006

I've finally been able to capture the panic, as now it occurs even with DDB 
configured. Of the six machines I have running 6.1-RC (CVSupped today), 
this is the only one that does this.

/boot/kernel/kernel text=0x30c488 data=0x3b6a0+0x3170c syms=[0x4+0x46430+0x4+0x58da4]
no such file or directory
-
Hit [Enter] to boot immediately, or any other key for command prompt.
Booting [/boot/kernel/kernel]...
GDB: no debug ports present
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2006 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 6.1-RC #0: Tue Apr 18 17:26:44 PDT 2006
    root at cwsys:/export/obj/opt/src/cvs-stable6/src/sys/DEBUG
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Pentium/P54C (119.75-MHz 586-class CPU)
  Origin = "GenuineIntel"  Id = 0x52c  Stepping = 12
  Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory  = 83886080 (80 MB)
avail memory = 72531968 (69 MB)
Intel Pentium detected, installing workaround for F00F bug
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
cpu0 on motherboard
pcib0: <Host to PCI bridge> pcibus 0 on motherboard
pci0: <PCI bus> on pcib0
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX3 WDMA2 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xf000-0xf00f at device 7.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
ahc0: <Adaptec 2940 SCSI adapter> port 0x6000-0x60ff mem 0xe1000000-0xe1000fff irq 12 at device 19.0 on pci0
ahc0: [GIANT-LOCKED]
aic7870: Single Channel A, SCSI Id=7, 16/253 SCBs
pci0: <display, VGA> at device 20.0 (no driver attached)
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xc7fff,0xc8000-0xca7ff,0xdc000-0xdffff on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
ed0 at port 0x280-0x29f iomem 0xd8000 irq 10 on isa0
ed0: Ethernet address: 00:40:05:55:fe:74
ed0: type NE2000 (16 bit)
fdc0: <Enhanced floppy controller> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
fd1: <1200-KB 5.25" drive> on fdc0 drive 1
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppbus0: <Parallel port bus> on ppc0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
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: <PNP0303> can't assign resources (port)
unknown: <PNP0c01> can't assign resources (memory)
unknown: <PNP0501> can't assign resources (port)
unknown: <PNP0700> can't assign resources (port)
unknown: <PNP0400> can't assign resources (port)
unknown: <PNP0501> can't assign resources (port)
ed1: <SMC EZ Card (1660)> at port 0x220-0x23f irq 5 on isa0
ed1: Ethernet address: 00:e0:29:7d:84:0b
ed1: type RTL8019 (16 bit)
Timecounter "TSC" frequency 119752915 Hz quality 800
Timecounters tick every 10.000 msec
ad0: 408MB <Seagate ST3491A 07.07.01> at ata0-master WDMA1
ad2: 76351MB <SAMSUNG SP0802N TK100-24> at ata1-master WDMA2
acd0: CDROM <MATSHITA CR-588/LS13> at ata1-slave PIO4
Waiting 5 seconds for SCSI devices to settle
da0 at ahc0 bus 0 target 0 lun 0
da0: <CONNER CFP1080S 4649> Fixed Direct Access SCSI-2 device
da0: 10.000MB/s transfers (10.000MHz, offset 15), Tagged Queueing Enabled
da0: 1030MB (2110812 512 byte sectors: 64H 32S/T 1030C)
da1 at ahc0 bus 0 target 2 lun 0
da1: <QUANTUM TRB850S 043C> Fixed Direct Access SCSI-2 device
da1: 10.000MB/s transfers (10.000MHz, offset 8)
da1: 810MB (1660299 512 byte sectors: 64H 32S/T 810C)
cd0 at ata1 bus 0 target 1 lun 0
cd0: <MATSHITA CD-ROM CR-588 LS13> Removable CD-ROM SCSI-0 device
cd0: 16.000MB/s transfers
cd0: Attempt to query device size failed: NOT READY, Medium not present
Trying to mount root from ufs:/dev/ad0s1a
Loading configuration files.
kernel dumps on /dev/ad2s1b
Entropy harvesting: interrupts ethernet point_to_point kickstart.
swapon: adding /dev/ad0s1b as swap device
swapon: adding /dev/da0s1b as swap device
swapon: adding /dev/da1s1b as swap device
swapon: adding /dev/ad2s1b as swap device
Starting file system checks:
/dev/ad0s1a: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad0s1a: clean, 103068 free (772 frags, 12787 blocks, 0.2% fragmentation)
fsck: /dev/da1s1a in fstab more than once!

/dev/ad2s1e: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad2s1e: clean, 2532761 free (6993 frags, 315721 blocks, 0.3% fragmentation)/dev/ad2s1g: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/da1s1a: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad2s1g: clean, 35322687 free (74535 frags, 4406019 blocks, 0.1% fragmentation)
/dev/da1s1a: clean, 508234 free (6146 frags, 62761 blocks, 0.8% fragmentation)
/dev/da0s1a: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/da0s1a: clean, 224734 free (670 frags, 28008 blocks, 0.1% fragmentation)
/dev/ad2s1a: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/ad2s1a: clean, 123038 free (1206 frags, 15229 blocks, 0.3% fragmentation)
/dev/da0s1e: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/da0s1e: clean, 177737 free (1441 frags, 22037 blocks, 0.3% fragmentation)
Setting hostname: cwtest.
vfs.nfsrv.async: 0 -> 1
ed0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet6 fe80::240:5ff:fe55:fe74%ed0 prefixlen 64 tentative scopeid 0x1
        inet 10.1.1.2 netmask 0xffffff00 broadcast 10.1.1.255
        ether 00:40:05:55:fe:74
ed1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet6 fe80::2e0:29ff:fe7d:840b%ed1 prefixlen 64 tentative scopeid 0x2
        inet 10.1.2.2 netmask 0xffffff00 broadcast 10.1.2.255
        ether 00:e0:29:7d:84:0b
        media: Ethernet autoselect (10baseT/UTP)
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
        inet 127.0.0.1 netmask 0xff000000
add net default: gateway 10.1.2.254
Additional routing options:.
Starting devd.
Mounting NFS file systems:.
Creating and/or trimming log files:.
Starting syslogd.
Checking for core dump on /dev/ad2s1b...
savecore: reboot after panic: page fault
Apr 18 18:50:06 cwtest savecore: reboot after panic: page fault
savecore: no dump, not enough free space on device (75202 available, need 81542)savecore: unsaved dumps found but not saved
Initial i386 initialization:.
Additional ABI support: linux/compat/linux/sbin/ldconfig: Can't create temporary cache file /etc/ld.so.cache~: Read-only file system
.
Starting rpcbind.
Setting NIS domain: cwsent.com.
Starting ypxfrd.
Starting ypserv.
Starting ypbind.
NFS access cache time=0
Starting amd.
Clearing /tmp.
ELF ldconfig path: /lib /usr/lib /usr/lib/compat /usr/X11R6/lib /usr/local/lib /usr/local/krb5/lib /usr/local/libdata/ldconfig/graphviz /usr/local/libdata/ldconfig/mysql
a.out ldconfig path: /usr/lib/aout /usr/lib/compat/aout /usr/X11R6/lib/aout /usr/local/lib/aout /usr/local/krb5/lib/aout
ldconfig: /usr/lib/aout: No such file or directory
Starting mountd.
Apr 18 18:50:23 cwtest mountd[422]: bad exports list line /dsk02
Starting nfsd.
Starting timed.
Starting local daemons:removing old files: /var/preserve /tmp /var/tmp.
loading kernel modules: aout.
starting local daemons:.
.
Starting lpd.
Updating motd.
Configuring syscons: keyrate blanktime screensaver.
Starting sshd.
Starting sendmail.
Starting cron.
Local package initialization:.
Additional TCP options:.
/etc/rc.d/sysctl: WARNING: sysctl debug.watchdog.timeout does not exist.
Starting inetd.
Starting background file system checks in 60 seconds.

Tue Apr 18 18:50:35 PDT 2006
Access to, or unauthorized use of data on this computer by any person other
than authorized person(s) or owner(s) of an account is strictly prohibited
and may result in legal action against such person.

FreeBSD/i386 (cwtest) (console)

login: Apr 18 19:05:08 cwtest rA  AAWaiting (max 60 seconds) for system process `vnlru' to stop...done
Waiting (max 60 seconds) for system process `bufdaemon' to stop...done
Waiting (max 60 seconds) for system process `syncer' to stop...
Syncing disks, vnodes remaining...1 1 0 0 0 0 done
All buffers synced.
Uptime: 15m49s
(da0:ahc0:0:0:0): SYNCHRONIZE CACHE. CDB: 35 0 0 0 0 0 0 0 0 0
(da0:ahc0:0:0:0): Sense Error Code 0xa0 at block no. -1073741792 (decimal)

Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0x4
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc043ee58
stack pointer           = 0x28:0xc6aadc40
frame pointer           = 0x28:0xc6aadc40
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         = 22 (irq12: ahc0)
[thread pid 22 tid 100024 ]
Stopped at      xpt_freeze_devq+0x18:   movl    0x4(%eax),%eax
db> tr
Tracing pid 22 tid 100024 td 0xc1619600
xpt_freeze_devq(c16c8300,1) at xpt_freeze_devq+0x18
ahc_handle_seqint(c1583800,71) at ahc_handle_seqint+0x224
ahc_platform_intr(c1583800) at ahc_platform_intr+0x20a
ithread_execute_handlers(c1618624,c1589780) at ithread_execute_handlers+0x125
ithread_loop(c16156a0,c6aadd38) at ithread_loop+0x56
fork_exit(c0524560,c16156a0,c6aadd38) at fork_exit+0x6f
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xc6aadd6c, ebp = 0 ---
db> show registers
cs                0x20
ds                0x28
es                0x28
fs                 0x8
ss                0x28
eax                  0
ecx         0xc16c8300
edx         0xc16c6634
ebx         0xc6abd200
esp         0xc6aadc40
ebp         0xc6aadc40
esi         0xc1583800
edi         0xc161e1c0
eip         0xc043ee58  xpt_freeze_devq+0x18
efl            0x90282
dr0                  0
dr1                  0
dr2                  0
dr3                  0
dr4         0xffff0ff0
dr5              0x400
dr6         0xffff0ff0
dr7              0x400
xpt_freeze_devq+0x18:   movl    0x4(%eax),%eax
db>

-- 
Cheers,
Cy Schubert <Cy.Schubert at komquats.com>
FreeBSD UNIX:  <cy at FreeBSD.org>   Web:  http://www.FreeBSD.org

			e**(i*pi)+1=0