I'm running 7.1-PRERELEASE, with /usr/src and /usr/ports last csup-ed
just a few days ago. After being up for about a day or so the system
will panic because of a page fault. I'm not completely sure, but it
seems that the system is more stable when gdm and gnome are disabled in
rc.conf. At least it stayed up for several days when I did that.

I've run memtest several times, so I'm pretty confident it's not a
memory problem. Also the stack trace is always the same, so I'm
thinking it's not hardware related.

I've attached a stack trace from kgdb, and the output from dmesg. I'd
appreciate any help you could give me with this.

/var/crash# kgdb -n 5
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 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-marcel-freebsd"...

Unread portion of the kernel message buffer:
acd1: WARNING - READ_TOC read data overrun 18>12


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x188
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc0782714
stack pointer = 0x28:0xe52aec00
frame pointer = 0x28:0xe52aec18
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 = 18 (swi6: task queue)
trap number = 12
panic: page fault
cpuid = 0
Uptime: 8h10m38s
Physical memory: 1779 MB
Dumping 195 MB: 180 164 148 132 116 100 84 68 52 36 20 4

Reading symbols from /boot/kernel/sound.ko...Reading symbols from /boot/kernel/sound.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/sound.ko
Reading symbols from /boot/kernel/snd_cmi.ko...Reading symbols from /boot/kernel/snd_cmi.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/snd_cmi.ko
Reading symbols from /boot/kernel/acpi.ko...Reading symbols from /boot/kernel/acpi.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/acpi.ko
Reading symbols from /boot/kernel/linux.ko...Reading symbols from /boot/kernel/linux.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/linux.ko
Reading symbols from /usr/local/modules/fuse.ko...done.
Loaded symbols for /usr/local/modules/fuse.ko
Reading symbols from /boot/kernel/mach64.ko...Reading symbols from /boot/kernel/mach64.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/mach64.ko
Reading symbols from /boot/kernel/drm.ko...Reading symbols from /boot/kernel/drm.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/drm.ko
#0 doadump () at pcpu.h:196
196 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) backtrace
#0 doadump () at pcpu.h:196
#1 0xc078fae7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
#2 0xc078fda9 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:572
#3 0xc0aa174c in trap_fatal (frame=0xe52aebc0, eva=392)
at /usr/src/sys/i386/i386/trap.c:939
#4 0xc0aa19d0 in trap_pfault (frame=0xe52aebc0, usermode=0, eva=392)
at /usr/src/sys/i386/i386/trap.c:852
#5 0xc0aa238c in trap (frame=0xe52aebc0) at /usr/src/sys/i386/i386/trap.c:530
#6 0xc0a8827b in calltrap () at /usr/src/sys/i386/i386/exception.s:159
#7 0xc0782714 in _mtx_lock_sleep (m=0xc4ff804c, tid=3302734576, opts=0,
file=0x0, line=0) at /usr/src/sys/kern/kern_mutex.c:339
#8 0xc078ed66 in _sema_post (sema=0xc4ff804c, file=0x0, line=0)
at /usr/src/sys/kern/kern_sema.c:79
#9 0xc0513350 in ata_completed (context=0xc4ff8000, dummy=1)
at /usr/src/sys/dev/ata/ata-queue.c:481
#10 0xc07c2e15 in taskqueue_run (queue=0xc4dbab80)
at /usr/src/sys/kern/subr_taskqueue.c:282
#11 0xc07c3123 in taskqueue_swi_run (dummy=0x0)
at /usr/src/sys/kern/subr_taskqueue.c:324
#12 0xc076f8db in ithread_loop (arg=0xc4dadb30)
at /usr/src/sys/kern/kern_intr.c:1088
#13 0xc076c449 in fork_exit (callout=0xc076f720 ,
arg=0xc4dadb30, frame=0xe52aed38) at /usr/src/sys/kern/kern_fork.c:804
---Type to continue, or q to quit---
#14 0xc0a882f0 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:264
(kgdb) up 7
#7 0xc0782714 in _mtx_lock_sleep (m=0xc4ff804c, tid=3302734576, opts=0,
file=0x0, line=0) at /usr/src/sys/kern/kern_mutex.c:339
339 owner = (struct thread *)(v & ~MTX_FLAGMASK);
(kgdb) list
334 * If the owner is running on another CPU, spin until the
335 * owner stops running or the state of the lock changes.
336 */
337 v = m->mtx_lock;
338 if (v != MTX_UNOWNED) {
339 owner = (struct thread *)(v & ~MTX_FLAGMASK);
340 #ifdef ADAPTIVE_GIANT
341 if (TD_IS_RUNNING(owner)) {
342 #else
343 if (m != &Giant && TD_IS_RUNNING(owner)) {
(kgdb) q


/var/crash# dmesg
Copyright (c) 1992-2008 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 is a registered trademark of The FreeBSD Foundation.
FreeBSD 7.1-PRERELEASE #3: Tue Sep 23 00:01:44 EDT 2008
root@tigger:/usr/obj/usr/src/sys/GENERIC
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(TM) XP2000+ (1666.74-MHz 686-class CPU)
Origin = "AuthenticAMD" Id = 0x662 Stepping = 2
Features=0x383f9ff
AMD Features=0xc0400800
real memory = 1878966272 (1791 MB)
avail memory = 1828048896 (1743 MB)
kbd1 at kbdmux0
ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
acpi0: on motherboard
acpi0: [ITHREAD]
acpi0: Power Button (fixed)
acpi0: reservation of 0, a0000 (3) failed
acpi0: reservation of 100000, 6ff00000 (3) failed
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0xe408-0xe40b on acpi0
acpi_button0: on acpi0
pcib0: port 0xcf8-0xcff on acpi0
pci0: on pcib0
agp0: on hostb0
agp0: aperture size is 256M
pcib1: at device 1.0 on pci0
pci1: on pcib1
pcm0: port 0xd800-0xd8ff irq 10 at device 5.0 on pci0
pcm0: [ITHREAD]
ohci0: mem 0xf9000000-0xf9000fff irq 5 at device 12.0 on pci0
ohci0: [GIANT-LOCKED]
ohci0: [ITHREAD]
usb0: OHCI version 1.0, legacy support
usb0: on ohci0
usb0: USB revision 1.0
uhub0: on usb0
uhub0: 3 ports with 3 removable, self powered
ohci1: mem 0xf8800000-0xf8800fff irq 11 at device 12.1 on pci0
ohci1: [GIANT-LOCKED]
ohci1: [ITHREAD]
usb1: OHCI version 1.0, legacy support
usb1: on ohci1
usb1: USB revision 1.0
uhub1: on usb1
uhub1: 2 ports with 2 removable, self powered
ehci0: mem 0xf8000000-0xf80000ff irq 10 at device 12.2 on pci0
ehci0: [GIANT-LOCKED]
ehci0: [ITHREAD]
usb2: EHCI version 1.0
usb2: companion controllers, 3 ports each: usb0 usb1
usb2: on ehci0
usb2: USB revision 2.0
uhub2: on usb2
uhub2: 5 ports with 5 removable, self powered
umass0: on uhub2
uhub3: on uhub2
uhub3: single transaction translator
uhub3: 4 ports with 4 removable, self powered
dc0: port 0xd400-0xd4ff mem 0xf7800000-0xf78003ff irq 11 at device 13.0 on pci0
miibus0: on dc0
ukphy0: PHY 1 on miibus0
ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
dc0: Ethernet address: 00:14:bf:5d:74:f6
dc0: [ITHREAD]
vgapci0: port 0xd000-0xd0ff mem 0xfa000000-0xfaffffff,0xf7000000-0xf7000fff irq 10 at device 14.0 on pci0
ahc0: port 0xb800-0xb8ff mem 0xf6800000-0xf6800fff irq 15 at device 15.0 on pci0
ahc0: [ITHREAD]
aic7890/91: Ultra2 Wide Channel A, SCSI Id=7, 32/253 SCBs
isab0: at device 17.0 on pci0
isa0: on isab0
atapci0: port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xb400-0xb40f at device 17.1 on pci0
ata0: on atapci0
ata0: [ITHREAD]
ata1: on atapci0
ata1: [ITHREAD]
fdc0: port 0x3f2-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: [FILTER]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio0: [FILTER]
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
sio1: [FILTER]
atkbdc0: port 0x60,0x64 irq 1 on acpi0
atkbd0: irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
atkbd0: [ITHREAD]
psm0: flags 0x200 irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: [ITHREAD]
psm0: model Generic PS/2 mouse, device ID 0
cpu0: on acpi0
pmtimer0 on isa0
orm0: at iomem 0xc0000-0xc7fff,0xc8000-0xcd7ff pnpid ORM0000 on isa0
ppc0: at port 0x378-0x37f irq 7 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/9 bytes threshold
ppbus0: on ppc0
ppbus0: [ITHREAD]
plip0: on ppbus0
plip0: WARNING: using obsoleted IFF_NEEDSGIANT flag
lpt0: on ppbus0
lpt0: Interrupt-driven port
ppi0: on ppbus0
ppc0: [GIANT-LOCKED]
ppc0: [ITHREAD]
sc0: at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
ugen0: on uhub0
ulpt0: on uhub1
ulpt0: using bi-directional mode
Timecounter "TSC" frequency 1666738536 Hz quality 800
Timecounters tick every 1.000 msec
acd0: DVDROM at ata0-master UDMA33
acd1: DVDR at ata0-slave UDMA66
Waiting 5 seconds for SCSI devices to settle
da1 at ahc0 bus 0 target 0 lun 0
da1: Fixed Direct Access SCSI-3 device
da1: 40.000MB/s transfers (20.000MHz, offset 63, 16bit)
da1: Command Queueing Enabled
da1: 8755MB (17930694 512 byte sectors: 255H 63S/T 1116C)
da2 at ahc0 bus 0 target 12 lun 0
da2: Fixed Direct Access SCSI-3 device
da2: 40.000MB/s transfers (20.000MHz, offset 127, 16bit)
da2: Command Queueing Enabled
da2: 35074MB (71833096 512 byte sectors: 255H 63S/T 4471C)
cd0 at ahc0 bus 0 target 6 lun 0
cd0: 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
da0 at umass-sim0 bus 0 target 0 lun 0
da0: Fixed Direct Access SCSI-2 device
da0: 40.000MB/s transfers
da0: 305245MB (625142448 512 byte sectors: 255H 63S/T 38913C)
GEOM_LABEL: Label for provider da0s2 is msdosfs/ .
Trying to mount root from ufs:/dev/da2s4a
WARNING: / was not properly dismounted
WARNING: /tmp was not properly dismounted
WARNING: /usr was not properly dismounted
WARNING: /var was not properly dismounted
fuse4bsd: version 0.3.9-pre1, FUSE ABI 7.8
drm0: <3D Rage Pro 215GP> on vgapci0
info: [drm] Initialized mach64 1.0.0 20020904

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