Date: Mon, 15 Feb 1999 23:34:37 +0200 (SAST) From: Khetan Gajjar <khetan@chain.freebsd.os.org.za> To: current@FreeBSD.ORG Subject: Problems in VM structure ? Message-ID: <Pine.BSF.4.05.9902152325310.518-100000@chain.freebsd.os.org.za>
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Hi.
I saw that my 4-CURRENT box from 8 February dropped to ddb
after my last make world. I rebuilt world today, and the
same problem is occuring. These problems started occuring
after Matt Dillon's changes to the VM system.
What is worrying/troubling is that in single user mode,
the machine is stable, and manages to build world without
a problem. When booted into multi-user mode, it's stable
and usable for anywhere from 1 to 3 hours, and then
panics. There are no active users on at the time, and the
machine is not heavily loaded (0.0-0.2)
I suspected a hardware error, so swopped all the RAM from a
production machine, and it still produces the same fault.
The error is
panic: vm_fault: fault on nofault entry, addr : f2572000
Debugger ("panic")
Stopped at Debuger+0x37: movl $0,in_Debugger
When I hit c, I get this :
Syncing disks...
Fatal trap 12 : page fault while in kernel mode
fault virtual address = 0x100008
fault code = supervisor read, page not present
instruction pointer = 0x8:0xf0145d98
stack pointer = 0x10:0xf79b97fc
frame pointer = 0x10:0xf79b9810
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 = 2035 (sendmail)
interrupt mask = net tty bio cam
kernel: type 12 trap, code=0
stopped at softclock+0x48: cmpl %esi,0x8 (%ecx)
Does anyone know what this means ? The machine was idle
at the time - I'm the only user, and it isn't used as a
public access server. The process varies, sometimes httpd,
other times sendmail.
I am using CAM, softupdates and NFS (not heavily though).
I haven't seen anything like this on -current or -hackers,
and searching the mailing lists didn't reveal anything
relevant.
The only "non standard" thing I'm doing is disabling the
vfs reallockblks that was causing the machine to panic
months ago. I re-enabled it, and it still does the same
thing. So, that's not it. I'm doing this by issuing
/sbin/sysctl -w vfs.ffs.doreallocblks=0
on boot up.
My kernel config and dmesg is listed below.
TIA!
dmesg
-----
Copyright (c) 1992-1999 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 4.0-CURRENT #0: Mon Feb 15 12:50:24 SAST 1999
root@chain.freebsd.os.org.za:/usr/src/sys/compile/CHAIN
Timecounter "i8254" frequency 1193182 Hz
Timecounter "TSC" frequency 200455997 Hz
CPU: Pentium/P54C (200.46-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x52c Stepping=12
Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory = 67108864 (65536K bytes)
avail memory = 62050304 (60596K bytes)
Preloaded elf kernel "kernel" at 0xf02c9000.
ccd0-1: Concatenated disk drivers
Probing for devices on PCI bus 0:
chip0: <Host to PCI bridge (vendor=1039 device=5591)> rev 0x02 on pci0.0.0
ide_pci0: <PCI IDE controller (busmaster capable)> rev 0xd0 int a irq 14 on pci0.0.1
chip1: <SiS 85c503> rev 0x01 on pci0.1.0
chip2: <PCI to PCI bridge (vendor=1039 device=0001)> rev 0x00 on pci0.2.0
vga0: <S3 Trio graphics accelerator> rev 0x53 int a irq 10 on pci0.9.0
de0: <Digital 21041 Ethernet> rev 0x11 int a irq 5 on pci0.13.0
de0: SMC 21041 [10Mb/s] pass 1.1
de0: address 00:00:c0:f9:2f:c8
Probing for devices on PCI bus 1:
Probing for PnP devices:
Probing for devices on the ISA bus:
sc0 on isa
sc0: VGA color <16 virtual consoles, flags=0x0>
atkbdc0 at 0x60-0x6f on motherboard
atkbd0 irq 1 on isa
psm0 irq 12 on isa
psm0: model IntelliMouse, device ID 3
sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: FIFO enabled, 8 bytes threshold
fd0: 1.44MB 3.5in
wdc0 at 0x1f0-0x1f7 irq 14 flags 0xa0ffa0ff on isa
ide_pci: generic_dmainit 01f0:0: warning, IDE controller timing not set
wdc0: unit 0 (wd0): <WDC AC21000H>, DMA, 32-bit, multi-block-16
wd0: 1033MB (2116800 sectors), 2100 cyls, 16 heads, 63 S/T, 512 B/S
ide_pci: generic_dmainit 01f0:1: warning, IDE controller timing not set
wdc0: unit 1 (wd1): <QUANTUM FIREBALL1080A>, DMA, 32-bit, multi-block-8
wd1: 1039MB (2128896 sectors), 2112 cyls, 16 heads, 63 S/T, 512 B/S
wdc1 at 0x170-0x177 irq 15 flags 0xa0ffa0ff on isa
ide_pci: generic_dmainit 0170:0: warning, IDE controller timing not set
wdc1: unit 0 (wd2): <ST32140A>, DMA, 32-bit, multi-block-32
wd2: 2015MB (4127760 sectors), 4095 cyls, 16 heads, 63 S/T, 512 B/S
ppc0 at 0x378 irq 7 on isa
ppc0: Winbond chipset (NIBBLE-only) in COMPATIBLE mode
plip0: <PLIP network interface> on ppbus 0
ppi0: <generic parallel i/o> on ppbus 0
aha0 at 0x330-0x333 irq 11 drq 6 on isa
aha0: AHA-1542CF FW Rev. C.0 (ID=45) SCSI Host Adapter, SCSI ID 7, 16 CCBs
npx0 on motherboard
npx0: INT 16 interface
vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 on isa
de0: enabling 10baseT port
Intel Pentium detected, installing workaround for F00F bug
IP packet filtering initialized, divert enabled, rule-based forwarding disabled, logging limited to 100 packets/entry
de0 XXX: driver didn't set ifq_maxlen
lo0 XXX: driver didn't set ifq_maxlen
Waiting 2 seconds for SCSI devices to settle
changing root device to wd1s1a
da0 at aha0 bus 0 target 2 lun 0
da0: <QUANTUM LPS540S 5900> Fixed Direct Access SCSI-2 device
da0: 3.300MB/s transfers
da0: 516MB (1057616 512 byte sectors: 64H 32S/T 516C)
da1 at aha0 bus 0 target 4 lun 0
da1: <CONNER CFA540S 14B1> Fixed Direct Access SCSI-2 device
da1: 3.300MB/s transfers
da1: 515MB (1056708 512 byte sectors: 64H 32S/T 515C)
WARNING: / was not properly dismounted
cd0 at aha0 bus 0 target 6 lun 0
cd0: <YAMAHA CRW4260 1.0q> Removable CD-ROM SCSI-2 device
cd0: 3.300MB/s transfers
cd0: Attempt to query device size failed: NOT READY, Medium not present - tray closed
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
ffs_mountfs: superblock updated for soft updates
Kernel config
-------------
#bus devices
controller isa0
controller pnp0
controller pci0
#scsi code + adapter
controller aha0 at isa? port ? cam irq ?
controller scbus0
#processor stuff
machine "i386"
cpu "I386_CPU"
cpu "I486_CPU"
cpu "I586_CPU"
cpu "I686_CPU"
ident CHAIN
options MATH_EMULATE #Support for x87 emulation
options "PQ_LARGECACHE" #enable 512kb+ l2 cache support
device npx0 at isa? port IO_NPX irq 13
#performance stuff
maxusers 256
options "NMBCLUSTERS=4096"
options FAILSAFE #Be conservative
options "CMD640" # work around CMD640 chip deficiency
#networking
pseudo-device loop
pseudo-device ether
pseudo-device tun 1
options INET #InterNETworking
#filesystems
options FFS #Berkeley Fast Filesystem
options NFS #Network Filesystem
options PROCFS #Process filesystem
options "COMPAT_43" #Compatible with BSD 4.3 [KEEP THIS!]
options SOFTUPDATES
#console stuff
pseudo-device splash
pseudo-device pty 128
options UCONSOLE #Allow users to grab the console
options SYSVSHM
options SYSVSEM
options SYSVMSG
options VESA
options XSERVER # support for X server
controller atkbdc0 at isa? port IO_KBD tty
device atkbd0 at isa? tty irq 1
device psm0 at isa? tty irq 12
device vga0 at isa? port ? conflicts
device sc0 at isa? tty
#misc kernel tie ins
pseudo-device gzip # Exec gzipped a.out's
options USERCONFIG #boot -c editor
options VISUAL_USERCONFIG #visual boot -c editor
options KTRACE
options DDB
options SPX_HACK
options "IBCS2" #build ibcs2 into kernel
options "COMPAT_LINUX" #build linux into kernel
options "VM86"
#posix code
options "P1003_1B"
options "_KPOSIX_PRIORITY_SCHEDULING"
options "_KPOSIX_VERSION=199309L"
#security stuff
options IPFIREWALL #firewall
options IPFIREWALL_VERBOSE #print information about
# dropped packets
options "IPFIREWALL_VERBOSE_LIMIT=100" #limit verbosity
options IPDIVERT
options "ICMP_BANDLIM"
options "MD5"
pseudo-device bpfilter 2 #Berkeley packet filter
pseudo-device snp 2
#disk stuff
pseudo-device ccd 2
config kernel root on wd0
#floppy
controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2
disk fd0 at fdc0 drive 0
#primary ide channel
controller wdc0 at isa? port "IO_WD1" bio irq 14 flags 0xa0ffa0ff
disk wd0 at wdc0 drive 0
disk wd1 at wdc0 drive 1
#secondary ide channel
controller wdc1 at isa? port "IO_WD2" bio irq 15 flags 0xa0ffa0ff
disk wd2 at wdc1 drive 0
disk wd3 at wdc1 drive 1
#scsi devices
device da0
device cd0
device pass0
#other devices
#network card
device de0
#serial port
device sio0 at isa? port "IO_COM1" flags 0x10 tty irq 4
device sio1 at isa? port "IO_COM2" tty irq 3
#parallel port
device ppc0 at isa? port? net irq 7
controller ppbus0
device nlpt0 at ppbus?
device plip0 at ppbus?
device ppi0 at ppbus?
---
Khetan Gajjar (!kg1779) * khetan@iafrica.com ; khetan@os.org.za
http://www.os.org.za/~khetan * Talk/Finger khetan@chain.freebsd.os.org.za
FreeBSD enthusiast * http://www2.za.freebsd.org/
Security-wise, NT is a OS with a "kick me" sign taped to it
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