Bug 6074 - Kernel 2.2.5-15 dereferences null pointer
Summary: Kernel 2.2.5-15 dereferences null pointer
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel
Version: 6.0
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Michael K. Johnson
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 1999-10-19 02:29 UTC by ghn
Modified: 2008-05-01 15:37 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2000-01-04 22:27:39 UTC

Attachments (Terms of Use)

Description ghn 1999-10-19 02:29:53 UTC
After installing RH6.0 on a machine that had been happily
running 5.1 for several months, I have run into a problem.
Another user (rdnelson) reports a similar
problem.  Running with an off-the-shelf 6.0 kernel
(2.2.5-15.i586) on an AMD K6-2/333 with 32M memory, the
machine locked up with the following message in

Oct  7 17:36:50 mercury kernel: Unable to handle kernel NULL
pointer dereference at virtual address 00000004

For both of us, this problem seemed to occur while using
Netscape Communicator.  I have since upgraded to 2.2.5-22
and have not seen the problem again, but I don't know what
web site/page I was looking at that caused the problem
initially, or even if it was data-dependent.

I have been unable to determine what changes occurred
between release 15 and release 22, though the upgrade center
indicates 22 fixes a potential for "remotely hanging the

Could someone verify whether this is a known or fixed

Comment 1 Bill Nottingham 1999-10-19 14:49:59 UTC
We'd need more information. If you could run the full oops text
through ksymoops, it would be helpful.

Comment 2 Bill Nottingham 1999-11-04 23:22:59 UTC
Does the 2.2.12 kernel from 6.1 still have this problem?

Comment 3 Cristian Gafton 2000-01-04 22:27:59 UTC
Assigned to dledford

Comment 4 Alan Cox 2000-08-08 13:52:58 UTC
Closed in the absence of further traffic

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