Linux kernel compilation locations
I tried several times to recompile Linux kernel, everything worked fine, but i realized that its taking a lot of space from the hard disk , i would like to know where the newly compiled kernel files...
View ArticleWhy are segfaults called faults (and not aborts) if they are not recoverable?
My following understanding of the terminology is this1) An interrupt is "a notification" that is initiated by the hardware to call the OS to run its handlers2) A trap is "a notification" that is...
View ArticleKernel compile error - cannot stat 'signing_key.priv': No such file or directory
I'm compiling custom kernel. I modified kernel configuration CONFIG_MODULE_SIG and CONFIG_MODULE_SIG_ALL. And followed below's site to apply this changes. https://wiki.centos.org/HowTos/Custom_Kernel...
View Articlewhy reboot needed to Root-enumerated device driver in windows?
when ever i unloading and reloading the driver. it is asking for reboot. things i am doing during unload time. 1. deleting root devices 2. stopping and deleting the service 3. unloading the driver by...
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Get Highlighted proccess in taskbar [closed]
I need to get highlighted icon process in Windows 10 taskbar.When a process has an icon notification in Taskbar, how can I get the processes that have a notification in C# / C++ or even in (Windows...
View ArticleVIDIOC_QBUF: Device or resource busy V4L2 MEMORY USERPTR
All of the following are using the #include <linux/videodev2.h> #include <vector> Basically I have to stream from my camera computer. USING the YUV format I have roughly speaking new...
View Article"AttributeError: 'NoneType' object has no attribute 'thread'" Error while...
I'm getting the following error when I try to commit on Kaggle.Error in atexit._run_exitfuncs: Traceback (most recent call last): File "/opt/conda/lib/python3.6/logging/__init__.py", line 1944, in...
View ArticleWould same file from various docker images be page-cached in k8s node just once?
Excerpt from https://docs.docker.com/storage/storagedriver/overlayfs-driver/Page Caching. OverlayFS supports page cache sharing. Multiple containers accessing the same file share a single page cache...
View ArticleHow can I create an OpenCV sharpening matrix in JavaScript?
I am trying to sharpen an image using a sharpening convolution kernel like below:[[0,-1,0], [-1,5,-1], [0,-1,0]]; Is it possible to define arbitrary matrices like this?I can do this simply in OpenCV...
View ArticleHow can I handle kernel errors on my Jupyter notebook (Anaconda)?
So, the problem I get is PermissionError: [Errno 13] Permission denied: 'C:\\Users\\pc\\AppData\\Roaming\\jupyter\\runtime\\kernel-c47c0f1d-a7ff-4191-8478-a01d79bfe182.json'this Kernel Error that keeps...
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(SOLVED) Is it impossible to get file information in kernel space?
I tried below's code to get user space's file size. The kernel module opens user space's file by filp_open(), and get information. In the new_write() function, I tried getting file's size by (struct...
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Is it impossible to get file information in kernel space?
I tried below's code to get user space's file size. The kernel module opens user space's file by filp_open(), and get information. In the new_write() function, I tried getting file's size by (struct...
View ArticleSpyder: variable explorer does not show variable for connected remote kernel
Spyder variable explorer works fine for a local kernel; however, it does not work for the remote kernel. Indeed, the connection to the kernel and running the codes works well but non of the variables...
View ArticleIncorrect memory access: why is my kernel *not* crashing
I wanted to show to somebody an exemple of incorrect memory access (kernelspace trying to access userspace memory leading to a bug).Thus, I took an old tutorial as a POC, the important part is : static...
View ArticleI want to create a very large map cache table with ebpf，But ebpf doesn't...
Out of memory: KIll process 1618 (sshd) score 0 or sacrifice child Killed process 1618 (sshd) total-vm:625792kB, anon-rss:0kB, file-rss:4kB, shmem-rss:0kB
View ArticleHow to save and load Gaussian process for production
How can I save and load Gaussian process models created using the GPy package?Here's how I define the model and optimize for its parameters:# define kernel ker =...
View ArticleUbuntu 18.04 kernel 5.0.0 full system hang
we have been running our java system for over 2 years without ever having a system hang. We have 2 physical servers running similar java software (2 JVMs on each server) to form a cluster. As far as I...
View ArticleDespite the same input and logic, the d_path output is different
I'm trying to get filepath from dentry on linux kernel. But there is a strange problem. Please check case2.Code:#if 0 // header reference struct vfsmount { struct dentry *mnt_root; /* root of...
View ArticleHow to create a system call for FreeBSD kernel
I want to add new syscall to freeBSD kernel and I want to change syscalls.master file in /usr/src/sys/kern/syscalls.master. But this file is not existing in this path and '/usr/src' path is empty. What...
View ArticleHow to Install MySQL Kernel to JupyterLab?
I have updated versions of JupyterLab and Anaconda on Windows but do not know how to install MySQL kernel to JupyterLab.
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