# [OmniOS-discuss] Debugging crash dump

Lawrence Giam paladinemishakal at gmail.com
Tue May 12 10:23:34 UTC 2015

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    Hi All,

    I have a few time the server panic and auto-rebooted with crash dump. I am
    looking at this post
    http://wiki.illumos.org/display/illumos/How+To+Report+Problems but it seem
    the info is not updated.

    When I run this:
    echo '::panicinfo\n::cpuinfo -v\n::threadlist -v
    10\n::msgbuf\n*panic_thread::findstack -v\n::stacks' | mdb 5 > ~/crash.5

    root at sgbk02:/var/crash/unknown# echo '::panicinfo\n::cpuinfo
    -v\n::threadlist -v 10\n::msgbuf\n*panic_thread::findstack -v\n::stacks' |
    mdb 5 > crash.5
    mdb: warning: dump is from SunOS 5.11 omnios-8c08411; dcmds and macros may
    not match kernel implementation
    mdb: failed to read .symtab header for 'unix', id=0: no mapping for address
    mdb: failed to read .symtab header for 'genunix', id=1: no mapping for
    address
    mdb: failed to read modctl at ffffff113ba4cf08: no mapping for address
    mdb: invalid command '::panicinfo': unknown dcmd name
    mdb: invalid command '::cpuinfo': unknown dcmd name
    mdb: invalid command '::threadlist': unknown dcmd name
    mdb: invalid command '::msgbuf': unknown dcmd name
    mdb: invalid command '::findstack': unknown dcmd name
    mdb: invalid command '::stacks': unknown dcmd name

    Can someone update the wiki on how to get the kernel messages and stack
    information?

    Thanks & Regards,
    Lawrence.
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