Kernel Message:unable to handle kernel NULL pointer dereference at virtual address...
Linux - GeneralThis Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
OK, I'm lost at what's going on. I've installed redhat 6.2 with rpm upgrades on a box, and everything seemed OK. Now it randomly spits out
'Unable to handle kernel NULL pointer dereference at virtual address xxxxxx'
And a bunch of stuff about the stack, and various registers, etc.
I'd say there was something wrong with the kernel, but I've tried three different kernel rpms (now on 2.2.17-14) and have the same problem. We have another machine that's same kernel level and doesn't have problems. I don't think it's a kernel problem, but ...
There doesn't seem to be any order to the message. Different programs cause it, and sometimes it locks the box up while other times it doesn't - sometimes it causes a user program to die, other times it's caused the swapper to die.
I've looked around at various information around, and some tend to suggest that there's bad memory in the box. I tried to run memtest86 on it (the first 7 tests didn't find any problems - I was unable to run the extended tests at the time since the box couldn't be down the amount of time they required)
I don't know what else to do - does anybody have any ideas on what to even look at? I guess another step would be to contact Redhat for support - though there's enough extra stuff installed on the box, that I don't know how much help they'll be. Anyone have any experience with their support? Is it worth contacting them? Anyone have any a good experience with a support company and would recommend to use?