How to disable KVM in running kernel to solve errors while running VirtualBox

Issue this following commands as root or with sudo permission

rmmod kvm_intel
rmmod kvm


after that run VirtualBox

To solve the problem permenantly add these commands to scripts that will be executed when system starts like /etc/rc.local

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How to disable loading of unnecessary kernel modules

What exactly is a kernel module? A Kernel Module is a program that is not actually compiled into the Linux kernel but is loaded separately. Kernel modules enable you to extend the capabilities of the kernel without the need to build extra functionality directly into the kernel image. A good example is the device driver.There are certain advantages with using kernel modules as opposed to having

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Auto reboot after kernel panic

When a kernel encounters certain errors it calls the "panic" function which results from a unrecoverable error. This panic results in LKCD (Linux Kernel Crash Dump) initiating a kernel dump where kernel memory is copied out to the pre-designated dump area. The dump device is configured as primary swap by default. The kernel is not completely functional at this point, but there is enough

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Write your own kernel module and insert it into running kernel

So, you want to write a kernel module. You know C, you've written a few normal programs to run as processes, and now you want to get to where the real action is, to where a single wild pointer can wipe out your file system and a core dump means a reboot.kernel Modules are pieces of code that can be loaded and unloaded into the kernel upon demand. They extend the functionality of the kernel

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Important parts of the kernel in form of picture

digg_url = 'http://linuxpoison.blogspot.com/2008/03/important-parts-of-kernel-in-form-of.html'; The Linux kernel consists of several important parts: process management, memory management, hardware device driver, filesystem drivers, network management, and various other bits and pieces. Figure shows some of them.Probably the most important parts of the kernel (nothing else works without

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Kernel parameters for enhance security

The following list shows tunable kernel parameters you can use to secure your Linux server against attacks.For each tunable kernel parameters you need to be add it to the /etc/sysctl.conf configuration file to make the change permanent after reboots. To activate the configured kernel parameters immediately at runtime, use:# sysctl -pEnable TCP SYN Cookie ProtectionA "SYN Attack" is a denial

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How To Apply Patch to Kernel Source

Go to directory which holds the kernel source code# cd /usr/src/linux# bzip2 -dc /usr/src/patch-x.y.z.bz2 patch -p1 –dry-run–dry-run option to check that the patch applies cleanly. It can be a real pain to pull out a partially-applied patch. The -p1 option strips off part of the diff file’s pathnames for each changed file (see the patch(1) manpage for more details).Now you’ve checked that it

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Compiling a new Kernel on Linux

Yesterday i downloaded the newest Linux kernel ,that is 2.6.28 and tried to compile it...... when after extracting the zip archive and issue make command i got error as configuration file missing ..... and i was given three commands fro configuring that ... oldconfig , menuconfig and xconfig ...... menu config and xconfig appears difficult for me ..so i choose oldconfig which makes the entire

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Linux Kernel e-book Collections

Title: "Iptables-tutorial"Author: Oskar Andreasson.URL: http://iptables-tutorial.frozentux.netKeywords: iptables, netfilter, firewallsDescription: The aim of the iptables-tutorial is to explain iptables in a complete and simple way. It information on all the currently available matches and targets (in kernel), as well as complete example scripts and explanations. It contains a complete

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Instead of Linux Kernel ??

We will simply call a Linux distribution by the term "Linux " . but the strictest definition of Linux refers to only the kernel ...the more apt term would be "Gnu/Linux" . There is always a strong debate going on many of Linux communities that ,one should call a Linux distribution a"GNU/Linux" or not . The people who are supporting the term "GNU/Linux " argue that Linux refers to only the kernel

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