linux kernel debugging tutorial

The establishment of the Linux kernel debugging environment has always been a problem for new Linux kernel beginners. Recently, I have started to develop security-related Linux systems. Sometimes I have to debug the

entire compilation, will not modify the kernel directory linux-2.6.x the following initramfs-filelist fileModify 3: The parameters in boot add initrd=0x64200000,128k (tentative start address is 0x6420 0000, size is 128K).Extracting and making of initramfs_data.cpio.gzUnzip:Gunzip initramfs_data.cpio.gzmkdir TempCD TempCpio-i-F. /initramfs_data.cpio.gz--no-absolute-filename//must add the back of the--no-abs

creating the correct solution. this article is a two part series that will cover various methods of using ftrace for debugging the Linux kernel. this first part will talk briefly about setting up ftrace, using the function tracer, writing to the ftrace buffer from within the kernel, and varous ways to stop the tracer

= 5000000...# $ Sudo apt-Get install texinfoNow you can configure,# $ Configure -- prefix =/opt/gdb_7_4 // temporarily install it here# $ Mkdir/opt/gdb_7_4# $ Make make install3. Prepare KernelWe also need a bzimage, that is, a fat kernel. qemu only loves fat, because we only want to debug the kernel, so otherIf you are interested, you can install a complete set of virtual machines,# $ Wget ftp://ftp.kern

1. Comparison of several kernel debugging tools KDB: Debugging can only be performed at the compilation code level;The advantage is that two machines are not required for debugging. GDB: it lacks some essential functions when debugging A module. It can be used to view the r

table data structure pointing to the user space and kernel space, so that the user state and the kernel state access to memory space is different. NBSP;2, user state and kernel kernel stacks: Each process in Linux has two stacks, respectively, for the process execution of

Use kgdb to debug Linux kernel and Kernel Modules Created:Article attributes: originalArticle submission: xcspy (xcspy.com _ at_gmail.com) Author: xcspy member ladybugE-mail: xcspy.com@gmail.comHome: www.xcspy.com 1. Comparison of several kernel debugging tools KDB:

Reprinted from http://www.unixresources.net/linux/clf/linuxK/archive/00/00/70/85/708507.html#article709039 I am at a limited level, but I only record the use process. I hope to have some reference for those who have such requirements. Description of the basic software and hardware environment:ARM-based Demo Board (Freescale I. MX series) with a UART port and a network port.Kernel 2.6.26. kgdb is supported. In fact, the 24

*/0809 #include This simplest kernel module only contains the declaration of kernel module Loading Function, uninstalling function, and GPL v2 permission and some descriptions, located in the/kernel/drivers/hello directory of the matching source code in this book. Compile it to generate hello. ko target file, through "insmod. /hello. the ko command can load it

Data exchange between linux kernel and user layer and linux Kernel 1. There are basically System Call interfaces file_operation interfaces: read write ioctl? Module param of module driver (module parameters of module driver ). 2. kernel startup parameters :?By identifying

How to modify a system call without recompiling the kernel without rmmod the kernel module In order to solve this problem, two kinds of solutions are finally implemented:1.Linux system call hijacking 2.Kprobes Kernel debug Technology (not really modified) The following are respectively:Linux system call Hijacking:In fa

Happy Shrimphttp://blog.csdn.net/lights_joy/(QQ group: Visual embedlinux Tools 375515651)Welcome reprint, but please keep the author informationThis article applies only to vs2013 + velt-0.1.5Veltthe full name isVisual Embedlinuxtools, it is aVisual GdBsimilar toVisual Studioplug-in to assist with the completionLinuxdevelopment. Using this plugin, you will be able toVisual Studioof theIDEconducted inLinuxthe development of the application (including compilation and

For more information, see "learn while doing" by Zhejiang University Press.Chapter 9 Linux kernel compilation experiment objective: to learn how to re-compile the Linux kernel and understand the differences between the Linux standard ker