Date: Mon, 26 Aug 2002 09:39:41 -0700 From: Daniel Rudy <dcrudy@pacbell.net> To: FreeBSD-Hackers@FreeBSD.org Subject: System Panic: Trap 12 - Page Fault Message-ID: <3D6A59CD.7C90CA57@pacbell.net>
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Hello,
I'm trying to figure out why my system paniced. Below is some of the
details that I have come up with so far. This is the SECOND kernel
panic in a row. The first one is unusable.
strata:/usr/backup/crash 1034 ### ->gdb -k kernel.debug vmcore.1
GNU gdb 4.18 (FreeBSD)
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GDB is free software, covered by the GNU General Public License, and you
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This GDB was configured as "i386-unknown-freebsd"...
IdlePTD at phsyical address 0x00311000
initial pcb at physical address 0x00283960
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x644f0680
fault code = supervisor read, page not present
instruction pointer = 0x8:0x644f0680
stack pointer = 0x10:0xc0263634
frame pointer = 0x10:0xc05fc006
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 = Idle
interrupt mask = net
trap number = 12
panic: page fault
syncing disks...
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x30
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01de0f8
stack pointer = 0x10:0xc0263428
frame pointer = 0x10:0xc0263430
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 = Idle
interrupt mask = net bio cam
trap number = 12
panic: page fault
Uptime: 1m44s
dumping to dev #ad/0x20001, offset 131072
dump ata0: resetting devices .. done
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 2
7 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 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
487 if (dumping++) {
(kgdb) where
#0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
#1 0xc01529df in boot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:316
#2 0xc0152e1d in panic (fmt=0xc025ccac "%s") at
/usr/src/sys/kern/kern_shutdown.c:595
#3 0xc0224a5f in trap_fatal (frame=0xc02633e8, eva=48) at
/usr/src/sys/i386/i386/trap.c:966
#4 0xc022470d in trap_pfault (frame=0xc02633e8, usermode=0, eva=48) at
/usr/src/sys/i386/i386/trap.c:859
#5 0xc0224287 in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16,
tf_edi = 0, tf_esi = -1067713536,
tf_ebp = -1071238096, tf_isp = -1071238124, tf_ebx = -1071164132,
tf_edx = 6864960, tf_ecx = -970933824,
tf_eax = 0, tf_trapno = 12, tf_err = 0, tf_eip = -1071783688,
tf_cs = 8, tf_eflags = 66050,
tf_esp = -1067713536, tf_ss = -1067713536}) at
/usr/src/sys/i386/i386/trap.c:458
#6 0xc01de0f8 in acquire_lock (lk=0xc027551c) at
/usr/src/sys/ufs/ffs/ffs_softdep.c:266
#7 0xc01e21f8 in softdep_update_inodeblock (ip=0xc05bfc00,
bp=0xc1cef15c, waitfor=0)
at /usr/src/sys/ufs/ffs/ffs_softdep.c:3813
#8 0xc01dd159 in ffs_update (vp=0xc620b9c0, waitfor=0) at
/usr/src/sys/ufs/ffs/ffs_inode.c:106
#9 0xc01e6e64 in ffs_fsync (ap=0xc02634dc) at
/usr/src/sys/ufs/ffs/ffs_vnops.c:273
#10 0xc01e5673 in ffs_sync (mp=0xc0930e00, waitfor=2, cred=0xc05cf880,
p=0xc029c2c0) at vnode_if.h:558
#11 0xc0182e53 in sync (p=0xc029c2c0, uap=0x0) at
/usr/src/sys/kern/vfs_syscalls.c:576
#12 0xc0152752 in boot (howto=256) at
/usr/src/sys/kern/kern_shutdown.c:235
#13 0xc0152e1d in panic (fmt=0xc025ccac "%s") at
/usr/src/sys/kern/kern_shutdown.c:595
#14 0xc0224a5f in trap_fatal (frame=0xc02635f4, eva=1682900608) at
/usr/src/sys/i386/i386/trap.c:966
#15 0xc022470d in trap_pfault (frame=0xc02635f4, usermode=0,
eva=1682900608)
at /usr/src/sys/i386/i386/trap.c:859
#16 0xc0224287 in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16,
tf_edi = 6687744, tf_esi = -1067340800,
tf_ebp = -1067466746, tf_isp = -1071237600, tf_ebx = -1067340800,
tf_edx = -1481375744,
tf_ecx = -1067339776, tf_eax = 1682900608, tf_trapno = 12, tf_err
= 0, tf_eip = 1682900608, tf_cs = 8,
tf_eflags = 66050, tf_esp = -1072234652, tf_ss = -1481375744}) at
/usr/src/sys/i386/i386/trap.c:458
#17 0x644f0680 in ?? ()
#18 0xf09a1cc in ?? ()
cannot read proc at 0
(kgdb) qstrata:/usr/backup/crash 1037 ### ->uname -a
FreeBSD strata.pacbell.net 4.6.2-RELEASE FreeBSD 4.6.2-RELEASE #5: Tue
Aug 20 09:41:22 PDT 2002 root@strata.
pacbell.net:/usr/obj/usr/src/sys/STRATA i386
strata:/usr/backup/crash 1038 ### ->
strata:/usr/src/sys/i386/conf 1039 ### ->cat WILDFIRE
# * * * * KERNEL CONFIG FILE
# * * * * MACHINE WILDFIRE
# * * * * wildfire.pacbell.net
# CPU/Machine Options
machine i386
cpu I586_CPU
ident WILDFIRE
maxusers 0
device npx0 at nexus? port IO_NPX irq 13
# Software Debugging Options
makeoptions DEBUG=-g # Build a debugging kernel
options KTRACE # ktrace(1) support
options DDB # Enable the kernel debugger
options DDB_UNATTENDED # Force reboot after panic
options INVARIANTS # Additional sanity checking
options INVARIANT_SUPPORT # Support for INVARIANTS
options DIAGNOSTIC # Print additional debug
information
#options PERFMON # Performance counters see
prefmon(4)
# Kernel Software/Compatibility Options
options COMPAT_43 # Compatible with BSD 4.3 [KEEP
THIS!]
options SYSVSHM # SYSV-style shared memory
options SYSVMSG # SYSV-style message queues
options SYSVSEM # SYSV-style semaphores
options P1003_1B # Posix P1003_1B real-time
extensions
options _KPOSIX_PRIORITY_SCHEDULING # POSIX scheduling
support
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
# Filesystem Options
options FFS # Berkeley Fast Filesystem
options FFS_ROOT # FFS usable as root device
[keep this!]
options SOFTUPDATES # Enable FFS soft updates
support
options UFS_DIRHASH # Improve performance on big
directories
options NFS # Network Filesystem
options MSDOSFS # MSDOS Filesystem
options CD9660 # ISO 9660 Filesystem
options PROCFS # Process filesystem
options NFS_NOSERVER # Disable the NFS-server code.
options SUIDDIR # SUID directory file support
options QUOTA # Enable disk quotas
# Bus Hardware Settings
device isa # ISA bus [KEEP THIS!]
device pci # PCI bus
options AUTO_EOI_1 # Auto End of Interrupt Cntlr 1
# Floppy Hardware Settings
device fdc0 at isa? port IO_FD1 irq 6 drq 2
device fd0 at fdc0 drive 0
# ATA/ATAPI Hardware Settings/Software Options
device ata0 at isa? port IO_WD1 irq 14
device ata1 at isa? port IO_WD2 irq 15
device ata
device atadisk # ATA disk drives
device atapicd # ATAPI CDROM drives
options ATA_STATIC_ID # Static device numbering
# Keyboard Hardware Settings
device atkbdc0 at isa? port IO_KBD
device atkbd0 at atkbdc? irq 1 flags 0x1
# Video Hardware Settings/Software Options
device vga0 at isa? # VGA video device
pseudo-device splash # Splash screen driver
options VESA # Compile in VESA support
options VGA_WIDTH90 # Support for 90 column display
# System Console Hardware Settings/Software Options
device sc0 at isa? flags 0x100
options MAXCONS=8 # Max number of virtual consoles
options SC_HISTORY_SIZE=1000 # Size of scroll buffer
options SC_PIXEL_MODE # Support for raster text mode
# Advanced Power Management Hardware Settings
device apm0 at nexus? disable flags 0x20
# Serial Port Hardware Settings
device sio0 at isa? port IO_COM1 flags 0x10 irq 4
device sio1 at isa? port IO_COM2 irq 3
# Parallel Port Hardware Settings
device ppc0 at isa? irq 7
device ppbus # Parallel port bus (required)
device lpt # Printer
# Ethernet Network Hardware Settings
device miibus # MII bus support
device sis # Silicon Intergrated Systems SiS
900/SiS 7016
# Ethernet Network Software Options
options INET # InterNETworking
options TCP_DROP_SYNFIN # Drop TCP SYN+FIN Packets
options ICMP_BANDLIM # Rate limit bad replies
options IPDIVERT # divert sockets
options IPSTEALTH # support for stealth forwarding
options RANDOM_IP_ID # Support for random ID increment
options DUMMYNET # Support for traffic shaping
options BRIDGE # Support for NIC bridging
options MROUTING # Multicast routing
options IPFIREWALL # Kernel Firewall (man ipfw)
options IPFIREWALL_VERBOSE # print info on dropped packets
options IPFIREWALL_FORWARD # enable transparent proxy
support
options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
#options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by
default
# General Pseudo Devices
pseudo-device loop # Network loopback
pseudo-device ether # Ethernet support
pseudo-device disc # Discard device (ds0, ds1, etc)
pseudo-device pty # Pseudo-ttys (telnet etc)
pseudo-device speaker # Play IBM style sounds from PC speaker
pseudo-device bpf 4 # Berkeley packet filter
pseudo-device snp 1 # Snoop Device
pseudo-device tun 1 # Tunnel Device for PPP
--
Daniel Rudy
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