Date: Tue, 24 Sep 1996 12:44:11 -0400 (EDT) From: Brian Tao <taob@io.org> To: FREEBSD-CURRENT-L <freebsd-current@freebsd.org> Subject: Kernel panic in exit1() in /sys/kern/kern_exit.c Message-ID: <Pine.NEB.3.92.960924122649.415A-100000@zap.io.org>
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I've seen this a couple times on a 2-2960801-SNAP system. It is a
shell server, typically with 50+ concurrent logins. The first time,
'uptime' caused the kernel panic. This time, 'vi' caused it.
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x429e64
fault code = supervisor write, page not present
instruction pointer = 0x8:0xf0105a7d
stack pointer = 0x10:0xefbfff3c
frame pointer = 0x10:0xefbfff48
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 = 5529 (vi)
interrupt mask =
panic: page fault
# nm -a /kernel | sort | fgrep f0105
f01054a8 T _exec_new_vmspace
f0105520 T _exec_extract_strings
f01055e8 t _exec_copyout_strings
f010573c t _exec_check_permissions
f0105850 F kern_exit.o
f0105850 T _exit
f01058a4 T _exit1 <====
f0105ba4 T _owait
f0105bdc T _wait4
f0105bf8 t _wait1
f0105eb0 T _proc_reparent
f0105f00 F kern_fork.o
f0105f00 T _fork
f0105f14 T _vfork
f0105f28 T _rfork
f0105f4c t _fork1
FreeBSD 2.2-960801-SNAP #0: Sun Aug 25 17:00:05 EDT 1996
taob@feh.io.org:/u/src/sys/compile/SHELL
Calibrating clock(s) relative to mc146818A clock...
i586 clock: 132618543 Hz, i8254 clock: 1193065 Hz
CPU: Pentium (132.62-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x52b Stepping=11
Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8>
real memory = 134217728 (131072K bytes)
avail memory = 130273280 (127220K bytes)
Probing for devices on PCI bus 0:
chip0 <Intel 82437 (Triton) PCI cache memory controller> rev 2 on pci0:0
chip1 <Intel 82371 (Triton) PCI-ISA bridge> rev 2 on pci0:7:0
pci0:7:1: Intel Corporation, device=0x1230, class=storage (ide) [no driver assigned]
ncr0 <ncr 53c810 scsi> rev 2 int a irq 11 on pci0:10
ncr0 waiting for scsi devices to settle
(ncr0:0:0): "QUANTUM FIREBALL1080S 1Q09" type 0 fixed SCSI 2
sd0(ncr0:0:0): Direct-Access
sd0(ncr0:0:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
1042MB (2134305 512 byte sectors)
sd0(ncr0:0:0): with 3835 cyls, 4 heads, and an average 139 sectors/track
de0 <Digital DC21140 Fast Ethernet> rev 18 int a irq 14 on pci0:11
de0: SMC 9332 DC21140 [10-100Mb/s] pass 1.2
de0: address 00:00:c0:84:46:c8
de0: enabling 10baseT port
vga0 <VGA-compatible display device> rev 227 int a irq ?? on pci0:12
Probing for devices on the ISA bus:
pcvt: doreset() - got KEYB_R_RESEND response ... [one time only msg]
pcvt: doreset() - Caution - no PC keyboard detected!
vt0 at 0x60-0x6f irq 1 on motherboard
vt0: unknown trident, 80 col, color, 8 scr, unknown kbd, [R3.20-b24]
sio0 at 0x3f8-0x3ff irq 4 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: NEC 72065B
fd0: 1.44MB 3.5in
npx0 on motherboard
npx0: INT 16 interface
machine "i386"
cpu "I586_CPU"
ident SHELL
maxusers 128
options INET
options FFS
options NFS
options MSDOSFS
options PROCFS
options QUOTA
options "COMPAT_43"
options "SCSI_DELAY=5"
options SCSIDEBUG
options SCSI_REPORT_GEOMETRY
options UCONSOLE
options SYSVSHM
options SYSVSEM
options SYSVMSG
options PROBE_VERBOSE
options "NMBCLUSTERS=4096"
options "MAXMEM=131072"
config kernel root on sd0
controller isa0
controller pci0
controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr
disk fd0 at fdc0 drive 0
controller ncr0
controller scbus0
device sd0
device vt0 at isa? port "IO_KBD" tty irq 1 vector pcrint
options "PCVT_FREEBSD=210"
options "PCVT_META_ESC"
device npx0 at isa? port "IO_NPX" irq 13 vector npxintr
device sio0 at isa? port "IO_COM1" tty irq 4 vector siointr
device sio1 at isa? port "IO_COM2" tty irq 3 vector siointr
device de0
pseudo-device loop
pseudo-device ether
pseudo-device log
pseudo-device pty 256
pseudo-device bpfilter 4
pseudo-device snp 4
--
Brian Tao (BT300, taob@io.org, taob@ican.net)
Senior Systems and Network Administrator, Internet Canada Corp.
"Though this be madness, yet there is method in't"
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