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

Jamie Harris (jamie.harris@uwe.ac.uk)
Sun, 6 May 2001 00:08:07 +0100 (GMT Daylight Time)


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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