Date: Thu, 20 Dec 2001 17:22:55 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: "Robin P. Blanchard" <Robin_Blanchard@gactr.uga.edu> Cc: stable@FreeBSD.ORG Subject: Re: SMP kernel faulting. Message-ID: <200112210122.fBL1Mtn80207@apollo.backplane.com> References: <Pine.BSF.4.32.0112200759400.70923-100000@localhost> <3C222EB3.EE03334@gactr.uga.edu>
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Hmm. That looks like it ought to be easy for me to track down, but
I'll need access to the kernel core. If you gzip -9 the kernel.debug and
gzip -9 the vmcore and put them up somewhere where I can ftp or http
them, I'll take a look at it.
Note that kernel cores often contain sensitive information. If you
don't want to do this, that's ok. If you do, do NOT post the location
to the public list but instead email it to me privately.
-Matt
Matthew Dillon
<dillon@backplane.com>
:...
:This being my first attempt at debuggin a kernel, please let me know if
:there is more useful information required. I'd like to get this box
:running SMP again (it was an NT 4 app server for the last two years
:without problems). Kernel config follows debug info
:
:(kgdb) symbol-file kernel.debug
:Reading symbols from kernel.debug...done.
:(kgdb) exec-file /usr/local/var/adm/crash/kernel.0
:(kgdb) core-file /usr/local/var/adm/crash/vmcore.0
:SMP 2 cpus
:IdlePTD at phsyical address 0x0035a000
:initial pcb at physical address 0x002c7d20
:panicstr: from debugger
:panic messages:
:---
:Fatal trap 12: page fault while in kernel mode
:mp_lock = 01000002; cpuid = 1; lapic.id = 00000000
:fault virtual address = 0x9fdfe8c7
:fault code = supervisor write, page not present
:instruction pointer = 0x8:0xc01e3be8
:stack pointer = 0x10:0xff80fef0
:frame pointer = 0x10:0xc01e3b00
: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 <- SMP: XXX
:panic: from debugger
:mp_lock = 01000002; cpuid = 1; lapic.id = 00000000
:panic: from debugger
:mp_lock = 01000003; cpuid = 1; lapic.id = 00000000
:boot() called on cpu#1
:Uptime: 1h33m31s
:amr0: flushing cache...done
:
:dumping to dev #da/0x20001, offset 3932851
:dump 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 dumpsys () at ../../kern/kern_shutdown.c:473
:473 if (dumping++) {
:(kgdb) where
:#0 dumpsys () at ../../kern/kern_shutdown.c:473
:#1 0xc016e49c in boot (howto=260) at ../../kern/kern_shutdown.c:313
:#2 0xc016e8cd in panic (fmt=0xc026f8c4 "from debugger")
: at ../../kern/kern_shutdown.c:581
:#3 0xc01379f1 in db_panic (addr=-1071760408, have_addr=0, count=-1,
: modif=0xff80fd54 "") at ../../ddb/db_command.c:435
:#4 0xc013798f in db_command (last_cmdp=0xc02a5b04,
:cmd_table=0xc02a5944,
: aux_cmd_tablep=0xc02c2bf8) at ../../ddb/db_command.c:333
:#5 0xc0137a56 in db_command_loop () at ../../ddb/db_command.c:457
:#6 0xc0139c07 in db_trap (type=12, code=0) at ../../ddb/db_trap.c:71
:#7 0xc0242750 in kdb_trap (type=12, code=0, regs=0xff80feb0)
: at ../../i386/i386/db_interface.c:158
:#8 0xc0256c36 in trap_fatal (frame=0xff80feb0, eva=2682251463)
: at ../../i386/i386/trap.c:951
:#9 0xc02568b5 in trap_pfault (frame=0xff80feb0, usermode=0,
:eva=2682251463)
: at ../../i386/i386/trap.c:849
:#10 0xc02563fb in trap (frame={tf_fs = 24, tf_es = -8388592,
: tf_ds = -1071316976, tf_edi = 1644167168, tf_esi = -1065689856,
: tf_ebp = -1071760640, tf_isp = -8323364, tf_ebx = -1065689856,
: tf_edx = 1711277060, tf_ecx = -744332028, tf_eax = -8323320,
: tf_trapno = 12, tf_err = 2, tf_eip = -1071760408, tf_cs = 8,
: tf_eflags = 66118, tf_esp = -1072124367, tf_ss = -744332064})
: at ../../i386/i386/trap.c:448
:---Type <return> to continue, or q <return> to quit---
:#11 0xc01e3be8 in nfs_readdirrpc (vp=0xfc458908, uiop=0x8bfc758b,
: cred=0x4083f845) at ../../nfs/nfs_vnops.c:2121
:#12 0x408bf845 in ?? ()
:cannot read proc at 0
:
:
:
:kernel config:
:options INCLUDE_CONFIG_FILE
:
:machine i386
:cpu I686_CPU
:options SMP
:options APIC_IO
:options CPU_ENABLE_SSE
:options USER_LDT
:ident DUAL-4350
:maxusers 32
:
:makeoptions DEBUG=-g #Build kernel with gdb(1) debug
:symbols
:options DDB
:#options DDB_UNATTENDED
:options KTRACE #kernel tracing
:options INVARIANTS
:options INVARIANT_SUPPORT
:options DIAGNOSTIC
:options MAXMEM="(128*1024)"
:
:options INET #InterNETworking
: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
:#options MFS #this was as SMP culprit before
:?
:options NFS #Network Filesystem
:options NFS_NOSERVER
:options MSDOSFS #MSDOS Filesystem
:options CD9660 #ISO 9660 Filesystem
:options PROCFS #Process filesystem
:options COMPAT_43 #Compatible with BSD 4.3 [KEEP
:THIS!]
: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 SHMMAXPGS=8192
:options SHMMNI=4096
:options SHMSEG=1024
:options P1003_1B #Posix P1003_1B real-time
:extensions
:options _KPOSIX_PRIORITY_SCHEDULING
:options KBD_INSTALL_CDEV # install a CDEV entry in /dev
:options ICMP_BANDLIM
:options TCP_DROP_SYNFIN
:options COMPAT_LINUX
:options DEBUG_LINUX
:options RANDOM_IP_ID
:
:device isa
:device pci
:
:device amr
:
:device ahc
:device scbus
:device da
:device sa
:device cd
:device pass
:device ses
:device pt
:
:# Floppy drives
:device fdc0 at isa? port IO_FD1 irq 6 drq 2
:device fd0 at fdc0 drive 0
:
:# ATA and ATAPI devices
: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
:device atapifd # ATAPI floppy drives
:device atapist # ATAPI tape drives
:options ATA_STATIC_ID #Static device numbering
:
:# atkbdc0 controls both the keyboard and the PS/2 mouse
:device atkbdc0 at isa? port IO_KBD
:device atkbd0 at atkbdc? irq 1 flags 0x1
:
:device vga0 at isa?
:options VESA
:options VGA_WIDTH90
:
:# splash screen/screen saver
:pseudo-device splash
:
:# syscons is the default console driver, resembling an SCO console
:device sc0 at isa? flags 0x100
:
:# Floating point support - do not disable.
:device npx0 at nexus? port IO_NPX irq 13
:
:# Serial (COM) ports
:device sio0 at isa? port IO_COM1 flags 0x10 irq 4
:options CONSPEED=115200
:
:# PCI Ethernet NICs.
:device miibus # MII bus support
:device fxp # Intel EtherExpress PRO/100B (82557,
:82558)
:device sk
:options NMBCLUSTERS=65535
:
:# Pseudo devices - the number indicates how many units to allocated.
:pseudo-device loop # Network loopback
:pseudo-device ether # Ethernet support
:pseudo-device tun # Packet tunnel.
:pseudo-device pty # Pseudo-ttys (telnet etc)
:pseudo-device md # Memory "disks"
:pseudo-device gif 4 # IPv6 and IPv4 tunneling
:pseudo-device gzip
:pseudo-device vn
:pseudo-device bpf
:
:--
:------------------------------------
:Robin P. Blanchard
:IT Program Specialist
:...
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