Solved: Kernel NULL pointer, over my head...

From: Jamie Harris (jamie.harris@uwe.ac.uk)
Date: Sat May 05 2001 - 19:08:07 EDT

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    Thanks to everyone who help me solve this one... As suspected by a few of
    you it turned out to be duff CPU - you mean Linux can't work around that
    yet!! ;)

    Thanks again.

    Jamie...

    ---------- Forwarded message ----------
    Date: Tue, 1 May 2001 05:46:02 +0100 (GMT Daylight Time)
    From: Jamie Harris <jamie.harris@uwe.ac.uk>
    To: linux-kernel@vger.kernel.org, Bristol LUG <bristol@lists.lug.org.uk>,
         linux-admin@vger.kernel.org
    Subject: Kernel NULL pointer, over my head...

    Morning all,

    Sorry for the big cross post but I don't have the first clue about where
    to send this one. I get this from my stock 2.2.18 kernel in
    /var/log/syslog:

    May 1 05:27:36 mnemosyne kernel: Unable to handle kernel NULL pointer
    dereference at virtual address 00000000
    May 1 05:27:36 mnemosyne kernel: current->tss.cr3 = 00362000, %cr3 =
    00362000
    May 1 05:27:36 mnemosyne kernel: *pde = 00000000
    May 1 05:29:36 mnemosyne kernel: Unable to handle kernel NULL pointer
    dereference at virtual address 00000000
    May 1 05:29:36 mnemosyne kernel: current->tss.cr3 = 036dc000, %cr3 =
    036dc000
    May 1 05:29:36 mnemosyne kernel: *pde = 00000000
    May 1 05:30:28 mnemosyne kernel: Unable to handle kernel NULL pointer
    dereference at virtual address 00000000
    May 1 05:30:28 mnemosyne kernel: current->tss.cr3 = 00ca7000, %cr3 =
    00ca7000
    May 1 05:30:28 mnemosyne kernel: *pde = 00000000

    This time it seemed to be caused by running tar on a file, but I've
    noticed a similar error in the past but they've never made anything fall
    over. The tar process appeared to die but then again so did the telnet
    session so I don't know in what order they went down. I tried 3 times
    just to check it wasn't a fluke... What other details would be useful??

    Cheers Jamie...

    PS I'm not on the linux-kernel list so please post to me directly...

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