What is the stack used for in CPython, if anything?
As far as I understand:The OS kernel (e.g. Linux) alwaysallocates a stack for each system-level thread when a thread is created. CPython is known for using a private heap for its objects, including...
View ArticleGetting error when trying to compile linux kernel
Hi this is my first question and i sorry for probably mistakes that i havei try to compile linux kernel in fedora 32 and i get errori type these commands on terminalmkdir...
View ArticleUsing Linux kgdb over serial-on-LAN (SOL) using ipmitool
Is it possible to use kgdb over BMC based SOL? I have ability to get to the serial console using ipmitool sol activate. However, I want to use it to connected gdb remotely in order to debug my Linux...
View Articlereasons for STATUS_ACCESS_VIOLATION for a user mode call in ntdll.dll library...
Is it possible to access functions on ntdll.dll from user mode? I used LoadLibrary() and GetProcAddress() to obtain function address of NtOpenFile() successfully. But I get STATUS_ACCESS_VIOLATION...
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How to create a memdisk and floppy.img for a minimal bootable kernel?
I am following a course which involves creating a simple kernel which I can run on a VM(virtualbox) and debugging using gdb(running on another VM - ubuntu) over serial port. The video tutorial shows...
View ArticleThe reason that IOCTL to kernel give error "not a typewriter" in android...
I prepare some IOCTL interfaces at kernel module of android. Then at android source code I open file dicriptor(fd) with path /proc/aaa and call desire ioctl with this fd. It is working well when I run...
View ArticleModifying transmitter queue on a network driver on the linux kernel
I am trying without success to append or reorder packets on a Linux network driver. I am new on this so any help would be appreciated.First of all I am aware that his is a bad practice and so on, I am...
View ArticleWhat is the fastest connection method to debug a windows 10/7 kernel using...
There seems to be many methods for debugging a windows 10/7, including USB or network or COMBut which of them is the fastest? I have only used COM and it seems to be really slow compared to debugging a...
View Articleeth1 disappear after use new kernel 5.6.0 | uSID | Centos
In order to test SRv6 uSID in Linux, I compiled the new kernel 5.6.0 that in following Github:https://github.com/netgroup/srv6-usid-linux-kernel.gitAfter compiled and reboot, my 2nd network adapter...
View ArticleHow does the kernel set register cr3?
I understand that the mmu of the processor uses register cr3 to translate linear addresses into physical ones, provided that cr3 is properly set to the physical address of the page directory. But after...
View ArticleIn a crash dump how should I interpret an instruction pointer offset?
I am trying to debug a kernel module. I have compiled it with -g and I am logging with netconsole.In the output I see:[ 575.335966] RIP: 0010:switch_rtai_tasks+0x329/0x428 [rtai_sched]Which I...
View ArticleRunning a userspace process in user mode with Linux kernel call_usermodehelper
I tried to execute a userspace binary inside the Linux kernel module with call_usermodehelper. I found the launched application is running in root mode. Is it possible to run the application in a user...
View ArticleJupyter Notebook kernel error after installing ipykernel
I installed Ipykernel along with pandas and PyTorch for a new environment in Anaconda. After the new environment was created and I added the new kernel to my jupyter notebook, I got this error. File...
View ArticleLinux operating system ( Ubuntu)
I am tying sudo apt-get install gparted command on terminal but it is not working properly and showing this error. What could be the problem?E: Could not get lock /var/lib/dpkg/lock - open (11:...
View ArticleHow to get a non-master branch from git hub?
I followed the directions at (https://www.raspberrypi.org/documentation/linux/kernel/building.md), used commands below:git clone --depth=1 --branch <branch> https://github.com/raspberrypi/linuxcd...
View ArticleWhy argv is allways (NULL) in my execve system call monitor
I wrote lkm hook that monitor the execve system call it basically should print the parameter of the char ** argv .and i tried to print the argv but it didn't worked i must say that the filename...
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what is this mysterious character in kernel main function? How can i remove it?
I am trying to create my own kernel following the link https://wiki.osdev.org/Bare_Bonesthe author has mentioned that " followed by some mysterious character. "Why is this character occurring? How can...
View ArticleWhat can I do after a driver was built with newest Linux source codes?
I don't have Linux source codes corresponding to kernel image version of embedded system at my hand, which version is 4.19.57-v7+. I downloaded Linux source codes (git clone --depth=1...
View Articlehow to build debuginfo rpm in the kernel 4.19.x
I use the command make rpm-pkg to build debuginfo rpm for kernel(4.19.1), but it didn't work.so I tried to remove #%debug_package{null} in the scripts/package/mkspec and add find_debuginfo.sh xxxx to...
View ArticleHow to send multipart messages using libnl and generic netlink?
I'm trying to send a relatively big string (6Kb) through libnl and generic netlink, however, I'm receiving the error -5 (NL_ENOMEM) from the function nla_put_string in this process. I've made a lot of...
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