Assembly enter protected mode and jump back to real mode
I am developing a toy OS in assembly and I have a problem when switching from protected mode back to real mode. I have successfully switched to protected mode, called the kernel that writes text to...
View ArticleWindows kernel driver development
I am trying to learn kernel driver development using the book Windows Kernel Programming. The first exercise is a simple do-nothing driver. I compile and create the solution successfully. I entered...
View ArticleCan't run jupyter lab kernel
I am trying to run jupyter lab but the kernel is not connecting and I am not too sure the reason why. Any help will be appreciated thank you so much! This is the error I am getting:RuntimeError: This...
View Articleminifilter scanner in Windows 10 64 bit crashed the system after the...
I have successfully installed and run the minifilter scanner in Windows 10 32bit. But when I put it in Window 10 64bit, the windows crashed after restart. Are there any steps I need to do in the...
View ArticleKernel logs are not generated in adb logcat
I am fairly new to Android development.I am facing issue while taking kernel logs from Android device.When i do adb logcat -b,kernel logs are not generated in logcat.And able to generate kernel logs...
View ArticleCan Xv6 guarantee the write syscall is atomic?
It would cause serious problem that a user program try to write the large data to a file by a write system call.#include "kernel/types.h"#include "kernel/stat.h"#include "user/user.h"#include...
View ArticleIs the kernel's physical memory mapping the same between all virtual address...
On boot, I understand the the kernel is loaded into main memory. When we spawn processes, a portion of the virtual address space is reserved for the kernel. If every processes' virtual address space...
View Articlekernel module - how to make that my module upload automatically at boot time?
I'm using a centos 8. I made a module where every time the module goes up it prints "Hello World" and every time the module goes down it prints "Goodbye".How do I make the module load automatically...
View Articlenvme nvme1: I/O 332 QID 1 timeout, aborting
In Linux, I see the log as below:nvme nvme1: I/O 332 QID 1 timeout, abortingI trace the source code:https://elixir.bootlin.com/linux/latest/source/drivers/nvme/host/pci.c#L1362It is a log in:static...
View ArticleKernel Panic in Raspberry Pi 4
I got into the following error on my raspberry pi 4 :"kernel panic not syncing vfs unable to mount root fs on unknown-block(179,2) raspberry pi"Can someone please tell me why I got this error? and how...
View ArticleHow automatically kill hanging linux process via kernel?
I'm developing a custom android kernel and using userspace lmkd which is good in almost all cases.Sometimes though the system stuck, it just can't wake the display and root case seems hidden on logs,...
View ArticleWhy do I have a Kernel Error in Jupyter Notebook?
I am a newbie to python. I am getting the below error in Kernel while opening jupyter notebook. Any ideas how I can resolve it? Installation of jupyter has been done via Anaconda3 - tried reinstalling...
View ArticleReplace a character by modifying display driver
I want to build a custom display driver, where I could replace a few characters (passed by the application to display on the screen) with other characters.I had worked with replacing the usbkbd driver...
View ArticleHow can I produce a call chain of Android application layer function call to...
I have been trying to get behind the call chain of some of the android framework's app initiated termination functions such as System.exit(0), finish(), finishAndRemoveTask(), etc. I have used strace...
View Articleunknown symbol kallsyms_lookup_name
I'm pretty new to module programming, and am slightly above my head, but am trying to learn.I'm trying to use kallsyms_lookup_name to access the sys_call_table in order to modify syscall handlers....
View ArticleQEMU hosting MTE enabled kernel does not raise fault
I'm trying to compile and test ARMv8.5 MTE extensions on QEMU environment (running MTE-enabled kernel).I try to raise a fault on QEMU that hosts a kernel with MTE enabled. I have a simple C code I run...
View ArticleCannot access memory above 0x8000000 in protected mode x86
I am quite enthusiastic about computers and I managed to create my own bootloader and kernel.So far it jumps to protected mode from real mode and can execute C code. But the thing is that I cannot...
View ArticleHow can i unbind radeon driver gracefully?
I have igd and ati graphics card on my pc. I use ubuntu as my OS.After system boot, ati graphics card was bound to radeon driver.I tried to unbind Radeon by typing "echo 0000:01:00.0 >...
View ArticleKernel Restart (Ctrl+.) in spyder not working
I have recently updated my Anaconda and Spyder app! But in this new version of Spyder (version 4), when I restart the kernel (with short key and from console in above ribbon), the Restart kernel...
View Articlehow can i find the release note of linux kernel patch?
I have two kernel:3.10.0-957.21.3.el7.x86_64 in centos 7.63.10.0-862.43.1.el7.x86_64 in redhat 7.5i try to find the src ,but only find 3.10.0.how can i find the src file?what is the diff between them?
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