Date: Wed, 1 Sep 1999 11:39:29 +0200 (CEST) From: talon@lpthe.jussieu.fr (Michel TALON) To: freebsd-stable@freebsd.org Subject: panic Message-ID: <199909010939.LAA11699@niobe.lpthe.jussieu.fr>
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Hello,
I encountered a strange panic, apparently related to the vm system
during the holidays. The machine was running but mostly idle. It paniced
and rebooted without notable symptoms in the logs. This is a 3.2
stable system (from end of May): from uname -a
FreeBSD 3.2-STABLE #0: Thu May 27
The machine has always worked very well and has standard components.
The filesystems are mounted with softupdates. Here is the gdb trace
of the coredump:
Script started on Wed Sep 1 11:11:16 1999
sh-2.02# gdb -k kernel /var/crash/vmcore.3
GNU gdb 4.18
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-unknown-freebsd"...
IdlePTD 2969600
initial pcb at 258aac
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x1e9030
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01d188f
stack pointer = 0x10:0xc8ff5f08
frame pointer = 0x10:0xc8ff5f38
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 = 4 (syncer)
interrupt mask =
trap number = 12
panic: page fault
syncing disks... 2 done
dumping to dev 20401, offset 90112
dump 256 255 254 253 252 251 250 249 248 247 246 245 244 243 242 241
240 239 238 237 236 235 234 233 232 231 230 229 228 227 226 225 224
223 222 221 220 219 218 217 216 215 214 213 212 211 210 209 208 207
206 205 204 203 202 201 200 199 198 197 196 195 194 193 192 191 190
189 188 187 186 185 184 183 182 181 180 179 178 177 176 175 174 173
172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156
155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139
138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122
121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105
104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84
83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38
37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15
14 13 12 11 10 9 8 7 6 5 4 3 2 1
---
#0 boot (howto=256) at ../../kern/kern_shutdown.c:285
285 dumppcb.pcb_cr3 = rcr3();
(kgdb) where
#0 boot (howto=256) at ../../kern/kern_shutdown.c:285
#1 0xc0141ac0 in at_shutdown (
function=0xc0235867 <__set_sysinit_set_sym_memdev_sys_init+1115>,
arg=0xc8fe9a40, queue=-922788148) at ../../kern/kern_shutdown.c:446
#2 0xc01ff1cd in trap_fatal (frame=0xc8ff5ecc, eva=2002992)
at ../../i386/i386/trap.c:942
#3 0xc01feeab in trap_pfault (frame=0xc8ff5ecc, usermode=0, eva=2002992)
at ../../i386/i386/trap.c:835
#4 0xc01feb4e in trap (frame={tf_es = -922812400, tf_ds = -921763824,
tf_edi = -922838464, tf_esi = -920569920, tf_ebp = -922788040,
tf_isp = -922788108, tf_ebx = -920787328, tf_edx = -922787960,
tf_ecx = -1071178848, tf_eax = 2002944, tf_trapno = 12, tf_err = 0,
tf_eip = -1071834993, tf_cs = 8, tf_eflags = 66050, tf_esp = 0,
tf_ss = -1058014208}) at ../../i386/i386/trap.c:437
#5 0xc01d188f in ffs_sync (mp=0xc0effc00, waitfor=3, cred=0xc0a9b000,
p=0xc8fe9a40) at ../../ufs/ffs/ffs_vfsops.c:976
#6 0xc0167d91 in sync_fsync (ap=0xc8ff5f88) at ../../kern/vfs_subr.c:2776
#7 0xc01662fd in sched_sync () at vnode_if.h:499
#8 0xc0134742 in kproc_start (udata=0xc0246a38) at ../../kern/init_main.c:303
#9 0xc01f5a1a in fork_trampoline ()
(kgdb) quit
sh-2.02# exit
Script done on Wed Sep 1 11:12:10 1999
And for reference here is 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 3.2-STABLE #0: Thu May 27 11:12:03 CEST 1999
talon@niobe.lpthe.jussieu.fr:/usr/src/sys/compile/NIOBE
Timecounter "i8254" frequency 1193182 Hz
Timecounter "TSC" frequency 300682946 Hz
CPU: Pentium II (300.68-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x634 Stepping=4
Features=0x80f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,MMX>
real memory = 268435456 (262144K bytes)
config> pnp 1 0 os enable port0 0x220 irq0 5 drq0 1 drq1 3
config> quit
avail memory = 258322432 (252268K bytes)
Preloaded elf kernel "kernel" at 0xc02cb000.
Preloaded userconfig_script "/kernel.config" at 0xc02cb09c.
Preloaded splash_image_data "/boot/splash.bmp" at 0xc02cb0e8.
Preloaded elf module "splash_bmp.ko" at 0xc02cb138.
Probing for devices on PCI bus 0:
chip0: <Host to PCI bridge (vendor=8086 device=7180)> rev 0x03 on pci0.0.0
chip1: <PCI to PCI bridge (vendor=8086 device=7181)> rev 0x03 on pci0.1.0
chip2: <Intel 82371AB PCI to ISA bridge> rev 0x01 on pci0.4.0
chip3: <Intel 82371AB Power management controller> rev 0x01 on pci0.4.3
xl0: <3Com 3c905B-TX Fast Etherlink XL> rev 0x30 int a irq 11 on pci0.10.0
xl0: Ethernet address: 00:10:5a:3b:ae:03
xl0: autoneg complete, link status good (half-duplex, 100Mbps)
ncr0: <ncr 53c875 fast20 wide scsi> rev 0x03 int a irq 10 on pci0.11.0
Probing for devices on PCI bus 1:
vga0: <Matrox model 051f graphics accelerator> rev 0x00 int a irq 9 on pci1.0.0
Probing for PnP devices:
CSN 1 Vendor ID: CTL00f0 [0xf0008c0e] Serial 0xffffffff Comp ID: PNPb02f [0x2fb0d041]
pcm1 (SB16pnp <Vibra16X> sn 0xffffffff) at 0x220-0x22f irq 5 drq 1 flags 0x13 on isa
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 not found
sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
ppc0 at 0x378 irq 7 on isa
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/9 bytes threshold
ppi0: <generic parallel i/o> on ppbus 0
plip0: <PLIP network interface> on ppbus 0
pcm0 not probed due to drq conflict with pcm1 at 1
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 0xa0ff on isa
wdc0: unit 0 (atapi): <CD-56E/1.0D>, removable, accel, dma, iordis
acd0: drive speed 1033KB/sec, 128KB cache
acd0: supported read types: CD-DA
acd0: Audio: play, 256 volume levels
acd0: Mechanism: ejectable tray
acd0: Medium: no/blank disc inside, unlocked
vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 on isa
npx0 on motherboard
npx0: INT 16 interface
Waiting 5 seconds for SCSI devices to settle
changing root device to da0s1a
da0 at ncr0 bus 0 target 0 lun 0
da0: <QUANTUM FIREBALL ST3.2S 0F0C> Fixed Direct Access SCSI-2 device
da0: 20.000MB/s transfers (20.000MHz, offset 15), Tagged Queueing Enabled
da0: 3090MB (6328861 512 byte sectors: 255H 63S/T 393C)
WARNING: / was not properly dismounted
da1 at ncr0 bus 0 target 5 lun 0
da1: <IOMEGA ZIP 100 J.03> Removable Direct Access SCSI-2 device
da1: 3.300MB/s transfers
da1: 96MB (196608 512 byte sectors: 64H 32S/T 96C)
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
I hope this may have some use to the people trying to chase vm bugs
at the moment.
--
Michel TALON
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