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SGI announces Linux Kernel Crash Dumps (LKCD)

Posted by ryuzaki0 on from the making-the-kernel-work-more dept.

Alphix writes "SGI has announced their Linux Kernel Crash Dumps project - and it's gone to release. It's intended to simplify the examination of system crashes thru saving the kernel memory image when the system dies due to a software failure, recovering the kernel memory image when the system is rebooted and then examining the memory image to determine what happened when the failure occurred."

1 of 206 comments (clear)

  1. Re:Memory image will help. by yakker · · Score: 4
    I figured I'd include an example of a crash dump analysis report that is created in /var/log/vmdump. This is what you'll get after a kernel panic (or something similar to it). You can also run 'lcrash' on the map/vmdump files and perform interactive analysis, such as a 'dump' of memory, or a 'dis'assemble of some instructions, etc. Sorry, the spacing's not going to look exactly right ...



    =======================
    LCRASH CORE FILE REPORT
    =======================

    GENERATED ON:
    Thu Nov 4 19:15:19 1999


    TIME OF CRASH:
    Fri Nov 5 03:12:27 1999


    PANIC STRING:
    User created crash dump

    MAP:
    map.5

    VMDUMP:
    vmdump.5

    ================
    COREFILE SUMMARY
    ================

    The system died due to a software failure.

    ===================
    UTSNAME INFORMATION
    ===================

    sysname : Linux
    nodename : peak-pc.engr.sgi.com
    release : 2.2.13
    version : #1 SMP Fri Nov 5 02:59:34 PST 1999
    machine : i686
    domainname : engr.sgi.com

    ===============
    LOG BUFFER DUMP
    ===============

    Linux version 2.2.13 (root@peak-pc.engr.sgi.com) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 SMP Fri Nov 5 02:59:34 PST 1999
    mapped APIC to ffffe000 (0026f000)
    mapped IOAPIC to ffffd000 (00270000)
    Detected 348940216 Hz processor.
    Console: colour VGA+ 80x25
    Calibrating delay loop... 348.16 BogoMIPS
    Memory: 95448k/98304k available (1100k kernel code, 424k reserved, 1268k data, 64k init)
    Checking 386/387 coupling... OK, FPU using exception 16 error reporting.
    Checking 'hlt' instruction... OK.
    POSIX conformance testing by UNIFIX
    per-CPU timeslice cutoff: 100.26 usecs.
    CPU0: Intel Pentium II (Deschutes) stepping 02
    SMP motherboard not detected. Using dummy APIC emulation.
    PCI: PCI BIOS revision 2.10 entry at 0xfcaee
    PCI: Using configuration type 1
    PCI: Probing PCI hardware
    Linux NET4.0 for Linux 2.2
    Based upon Swansea University Computer Society NET3.039
    NET4: Unix domain sockets 1.0 for Linux NET4.0.
    NET4: Linux TCP/IP 1.0 for NET4.0
    IP Protocols: ICMP, UDP, TCP
    Starting kswapd v 1.5
    Detected PS/2 Mouse Port.
    Serial driver version 4.27 with no serial options enabled
    ttyS00 at 0x03f8 (irq = 4) is a 16550A
    ttyS01 at 0x02f8 (irq = 3) is a 16550A
    pty: 256 Unix98 ptys configured
    PIIX4: IDE controller on PCI bus 00 dev 39
    PIIX4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio
    hda: WDC AC24300L, ATA DISK drive
    hdc: NEC CD-ROM DRIVE:28C, ATAPI CDROM drive
    ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
    ide1 at 0x170-0x177,0x376 on irq 15
    hda: WDC AC24300L, 4112MB w/256kB Cache, CHS=524/255/63, UDMA
    hdc: ATAPI 32X CD-ROM drive, 128kB Cache
    Uniform CDROM driver Revision: 2.56
    Floppy drive(s): fd0 is 1.44M
    FDC 0 is a National Semiconductor PC87306
    (scsi0) found at PCI 14/0
    (scsi0) Narrow Channel, SCSI ID=7, 3/255 SCBs
    (scsi0) Warning - detected auto-termination
    (scsi0) Please verify driver detected settings are correct.
    (scsi0) If not, then please properly set the device termination
    (scsi0) in the Adaptec SCSI BIOS by hitting CTRL-A when prompted
    (scsi0) during machine bootup.
    (scsi0) Cables present (Int-50 YES, Ext-50 NO)
    (scsi0) Downloading sequencer code... 413 instructions downloaded
    scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.20/3.2.4

    scsi : 1 host.
    (scsi0:0:6:0) Synchronous at 20.0 Mbyte/sec, offset 15.
    Vendor: IBM Model: DDRS-34560 Rev: S97B
    Type: Direct-Access ANSI SCSI revision: 02
    Detected scsi disk sda at scsi0, channel 0, id 6, lun 0
    scsi : detected 1 SCSI disk total.
    SCSI device sda: hdwr sector= 512 bytes. Sectors= 8925000 [4357 MB] [4.4 GB]
    3c59x.c:v0.99H 11/17/98 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/vortex.h tml
    eth0: 3Com 3c905B Cyclone 100baseTx at 0xdc00, 00:c0:4f:90:6e:54, IRQ 11
    8K byte-wide RAM 5:3 Rx:Tx split, autoselect/Autonegotiate interface.
    MII transceiver found at address 24, status 786d.
    MII transceiver found at address 0, status 786d.
    Enabling bus-master transmits and whole-frame receives.
    Partition check:
    sda: sda1 sda2 sda3
    hda: hda1 hda2
    VFS: Mounted root (ext2 filesystem) readonly.
    Freeing unused kernel memory: 64k freed
    EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
    EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
    dump_open(): dump device opened: 0x803 [sd(8,3)]
    Adding Swap: 130748k swap-space (priority -1)
    Adding Swap: 130748k swap-space (priority -2)
    Kernel panic: User created crash dump
    Dumping to device 0x803 [sd(8,3)] ...
    Writing dump header ...
    Writing dump pages ...

    ====================
    CURRENT SYSTEM TASKS
    ====================

    ADDR UID PID PPID STATE PRI FLAGS MM NAME
    ================================================ ==============================
    c0234000 0 0 0 0 0 0 c0215320 swapper
    c5ffa000 0 1 0 1 20 100 c5fb4060 init
    c5fe8000 0 2 1 1 20 40 c0215320 kflushd
    c5fe6000 0 3 1 1 20 40 c0215320 kupdate
    c5fe4000 0 4 1 1 20 840 c0215320 kpiod
    c5fe2000 0 5 1 1 20 840 c0215320 kswapd
    c59ec000 1 248 1 1 20 140 c5fb4260 portmap
    c5686000 0 263 1 1 20 140 c5fb4460 ypbind
    c578c000 0 270 263 1 20 140 c5fb44e0 ypbind
    c5644000 0 324 1 1 20 140 c5fb42e0 syslogd
    c5602000 0 335 1 1 20 140 c5fb43e0 klogd
    c55c4000 0 349 1 1 20 40 c5fb4560 atd
    c5c3c000 0 363 1 1 20 40 c5fb41e0 crond
    c55a2000 0 381 1 1 20 140 c5fb45e0 inetd
    c5518000 0 395 1 1 20 140 c5fb4660 snmpd
    c5348000 0 409 1 1 20 40 c5fb46e0 named
    c52fe000 0 423 1 1 20 140 c5fb4760 routed
    c5272000 0 437 1 1 20 140 c5fb47e0 xntpd
    c523e000 0 451 1 1 20 140 c5fb4860 lpd
    c51e4000 0 469 1 1 20 140 c5fb48e0 rpc.statd
    c5194000 0 480 1 1 20 40 c5fb4960 rpc.rquotad
    c5174000 0 491 1 1 20 40 c5fb49e0 rpc.mountd
    c5158000 0 515 1 1 20 140 c5fb4ae0 rpc.rstatd
    c513e000 0 529 1 1 20 140 c5fb4a60 rpc.rusersd
    c511e000 99 543 1 1 20 40 c5fb4b60 rpc.rwalld
    c50f6000 0 557 1 1 20 140 c5fb4be0 rwhod
    c513c000 0 577 1 1 20 140 c5fb4360 rpc.yppasswdd
    c5078000 0 589 1 1 20 140 c5fb4ce0 amd
    c5086000 0 591 1 1 20 40 c0215320 rpciod
    c504a000 0 592 1 1 20 40 c0215320 lockd
    c4f54000 0 626 1 1 20 140 c5fb4de0 sendmail
    c4f22000 0 641 1 1 20 140 c5fb4d60 gpm
    c4e12000 0 655 1 1 20 140 c5fb4e60 httpd
    c4e0a000 99 658 655 1 20 140 c5fb4ee0 httpd
    c4e06000 99 659 655 1 20 140 c5fb4f60 httpd
    c4dfc000 99 660 655 1 20 140 c4dfe040 httpd
    c4df2000 99 661 655 1 20 140 c4dfe0c0 httpd
    c4de8000 99 662 655 1 20 140 c4dfe140 httpd
    c4dde000 99 663 655 1 20 140 c4dfe1c0 httpd
    c4dd4000 99 664 655 1 20 140 c4dfe240 httpd
    c4dcc000 99 665 655 1 20 140 c4dfe2c0 httpd
    c4dc0000 99 666 655 1 20 140 c4dfe340 httpd
    c4db6000 99 667 655 1 20 140 c4dfe3c0 httpd
    c4a28000 0 699 1 1 20 140 c4dfe540 smbd
    c499e000 0 710 1 1 20 140 c4dfe4c0 nmbd
    c4658000 9 767 1 1 20 40 c4dfe840 actived
    c48a2000 0 806 1 1 20 100 c5fb4c60 mingetty
    c4928000 0 807 1 1 20 100 c5fb4160 mingetty
    c4904000 0 808 1 1 20 100 c4dfe7c0 mingetty
    c498a000 0 809 1 1 20 100 c4dfe440 mingetty
    c4766000 0 810 1 1 20 100 c4dfe5c0 mingetty
    c4c6e000 0 811 1 1 20 100 c4dfe640 mingetty
    c479e000 0 812 1 1 20 100 c4dfe8c0 getty
    c4798000 0 817 381 1 20 100 c5fb40e0 in.rlogind
    c4976000 0 818 817 1 20 100 c4dfe740 login
    c45b8000 0 819 818 1 20 100 c4dfe6c0 tcsh
    c5204000 0 838 819 0 20 0 c4dfe940 crashdump

    ===========================
    STACK TRACE OF FAILING TASK
    ===========================

    ================================================ ================
    STACK TRACE FOR TASK: 0xc5204000 (crashdump)

    0 __dump_execute+153 [0xc010da21]
    1 dump_execute+149 [0xc011b925]
    2 panic+167 [0xc0114b6f]
    3 sys_setpriority+25 [0xc0115689]
    4 system_call+45 [0xc0107a61]
    ================================================ ================