John Walthall
2007-Jun-12 00:49 UTC
Panic: vm_fault: fault on nofault entry, addr: c1d9c000
For some time now, weeks, actually my FreeBSD box has been crashing aparrantly
randomly. It took me forever but I finally managed to capture a dump! Here is
what kgdb said:
-----------------------------------------------------------------------------
Script started on Mon Jun 11 19:56:46 2007
kgdb kernel.debug /var/crash/vmcore.0
kgdb: kvm_nlist(_stopped_cpus):
kgdb: kvm_nlist(_stoppcbs):
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so:
Undefined symbol "ps_pglobal_lookup"]
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:
panic: vm_fault: fault on nofault entry, addr: c1d9c000
Uptime: 2d1h27m41s
Dumping 351 MB (2 chunks)
chunk 0: 1MB (159 pages) ... ok
chunk 1: 351MB (89840 pages) 335 319 303 287 271 255 239 223 207 191 175 159
143 127 111 95 79 63 47 31 15
#0 doadump () at pcpu.h:165
165 __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) jhengis# ^D exit
Script done on Mon Jun 11 19:56:59 2007
-----------------------------------------------------------------------------
I have never had to debug a kernel dump before, and frankly am unfamiliar with
the procedure, Sorry if I have missed something obvious :(
The crashes started *around* the time that I upgraded to Xorg 7.2, however I
am unsure this is the cause, notwithstanding I *think* that something that
got rebuilt during that period is causing the crash. It does not seem,
however, to be Xorg itself; the crashes also occur when X is not in use. I
did not rebuild my kernel around that time.
I hope that I have provided enough information, if I have not, I can gladly
get more. I have attached my kernel configuration, my uname -a output is:
FreeBSD jhengis.vistua.com 6.2-RELEASE-p5 FreeBSD 6.2-RELEASE-p5 #3: Sat Jun
2 12:45:19 EDT 2007 root@jhengis.vistua.com:/usr/obj/usr/src/sys/BORODIN
i386
(The recent datestamp on this kernel is because I rebuilt it with debug
information, so I could catch the dump.)
You can get the complete contents of /var/crash from
ftp://anonymous@jhengis.vistua.com/pub/crash.tar.bz2
Any help would be greatly appreciated!
--John
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machine i386
cpu I686_CPU
ident BORODIN
# To statically compile in device wiring instead of /boot/device.hints
#hints "GENERIC.hints" # Default places to look for devices.
makeoptions DEBUG=-g
options SCHED_4BSD # 4BSD scheduler
options PREEMPTION # Enable kernel thread preemption
options INET # InterNETworking
options INET6 # IPv6 communications protocols
options FFS # Berkeley Fast Filesystem
options SOFTUPDATES # Enable FFS soft updates support
options UFS_ACL # Support for access control lists
options UFS_DIRHASH # Improve performance on big directories
options MD_ROOT # MD is a potential root device
options PROCFS # Process filesystem (requires PSEUDOFS)
options PSEUDOFS # Pseudo-filesystem framework
options GEOM_GPT # GUID Partition Tables.
options COMPAT_43 # Compatible with BSD 4.3 [KEEP THIS!]
options COMPAT_FREEBSD4 # Compatible with FreeBSD4
options COMPAT_FREEBSD5 # Compatible with FreeBSD5
options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
options KTRACE # ktrace(1) support
options SYSVSHM # SYSV-style shared memory
options SYSVMSG # SYSV-style message queues
options SYSVSEM # SYSV-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
options ADAPTIVE_GIANT # Giant mutex is adaptive.
device apic # I/O APIC
# Bus support.
device eisa
device pci
# Floppy drives
device fdc
# ATA and ATAPI devices
device ata
device atadisk # ATA disk drives
device atapicd # ATAPI CDROM drives
device atapifd # ATAPI floppy drives
options ATA_STATIC_ID # Static device numbering
device atapicam
# SCSI peripherals
device scbus # SCSI bus (required for SCSI)
device ch # SCSI media changers
device da # Direct Access (disks)
device cd # CD
device pass # Passthrough device (direct SCSI access)
device ses # SCSI Environmental Services (and SAF-TE)
device atkbdc # AT keyboard controller
device atkbd # AT keyboard
device psm # PS/2 mouse
device sc
device agp
device kbdmux # keyboard multiplexer
device vga # VGA video card driver
device splash # Splash screen and screen saver support
options VESA
options VGA_WIDTH90
options SC_PIXEL_MODE
# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these
NICs!
device miibus # MII bus support
device re # RealTek 8139C+/8169/8169S/8110S
device rl # RealTek 8129/8139
# Pseudo devices.
device loop # Network loopback
device random # Entropy device
device ether # Ethernet support
device ppp # Kernel PPP
device tun # Packet tunnel.
device pty # Pseudo-ttys (telnet etc)
device md # Memory "disks"
device gif # IPv6 and IPv4 tunneling
device faith # IPv6-to-IPv4 relaying (translation)
device bpf # Berkeley packet filter
# USB support
device ehci # EHCI PCI->USB interface (USB 2.0)
device usb # USB Bus (required)
device ugen # Generic
device uhid # "Human Interface Devices"
device ulpt # Printer
device umass # Disks/Mass storage - Requires scbus and da
# USB Ethernet, requires miibus
#device rue # RealTek RTL8150 USB Ethernet
device atapicam