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    SubjectRe: [Fastboot] Re: Kdump Testing
    On Thu, 28 Apr 2005 17:14:16 +0530
    Vivek Goyal <vgoyal@in.ibm.com> wrote:

    > > > Can you post a full serial console output of second kernel? That would help.
    > >
    > > I did another test run, same kernels (both running and recovery).
    > > The recovery kernel got a little further this time, still had
    > > Badness and a BUG.
    > >
    > > ---
    >
    > Ok. I am also able to see this slab corruption occurring on my machine. I can
    > get away with the problem if I disable cachefs support.
    >
    > Infact, I can reproduce the problem if I boot capture kernel normally through
    > BIOS with commandline "mem=64M". Looks like it is generic problem and not
    > associated with kexec/kdump. Cachefs might be doing some corruption.
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Wheeeeeeeeee. Great, we (I) can do without cachefs,
    and when I do that, kexec + kdump works.
    First time that I've seen kdump work. :)

    -rw-r--r-- 1 root root 1.0G Apr 28 08:41 oldmem.0428
    -r-------- 1 root root 960M Apr 28 08:36 vmcore.0428

    My (crashing/panic) kernel is built without -g, but gdb
    can still tell me this much:

    (gdb) bt
    #0 0xc010ef95 in crash_get_current_regs ()
    #1 0x00000000 in ?? ()
    #2 0xee821ea0 in ?? ()
    #3 0xee821ea0 in ?? ()
    #4 0xee821ea0 in ?? ()
    #5 0x00000046 in ?? ()
    #6 0x00000000 in ?? ()
    #7 0x00000000 in ?? ()
    #8 0x00000000 in ?? ()
    #9 0xee82c000 in ?? ()
    #10 0x00000000 in ?? ()
    #11 0xc010ed38 in machine_kexec ()


    Thanks for following up, tracking, working on this.

    ---
    ~Randy
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