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Questions tagged [kernel]

The main component of most operating systems, the kernel manages most of a computer's communication between hardware and software. Typically, the kernel is the lowest level of abstraction a programmer can have to a resource.

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Raspbian compile single kernel module gfs2

I'm trying my best to get GFS2 mounted in dual-primary on Raspbian, but I'm hitting an issue. Whenever I try to mount the GFS2 volume, I get an error: mount -t gfs2 -o noatime,nodiratime,noquota /dev/...
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Create bootable SD card for buildroot

I tried to generate boot images of buildroot for risc-v processor according to this 1 I could generate the rootfs files for 64 bit architecture.I need how to use this images to boot the linux kernel ...
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Linux kvm module compile causes dependency cycles kvm->kvm_intel->kvm

I have a fresh 4.19.13 linux kernel, which is able to compile and install normally. Then I have some modification to the kvm module in it, and I only want to re-install the kvm modules instead of the ...
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KALI Linux 4 LXDE virtual box Error

I Installed Kali Linux 4 LXDE on Virtual Box and installed the Guest Additions CD Image. But I get the error modprobe vboxsf failed I tried apt install linux-headers-$(uname -r), but apt can't ...
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Exclusive load and store instruction raise a deadlock [closed]

Do a dead lock problem occur from Exclusive Load / Store? I have a idea about that LDXR/STXR occur a deadlock. Is this case possible? My Exclusive Simple Spin Lock Assembly: Do a deadlock occur on ...
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Spyder not connecting to kernel

When I am opening Spyder environment in Anaconda3, I am unable to connect to the kernel. It throws the error: An error occured while connecting to the kernel b ' ' I tried resetting Spyder to ...
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22 views

Upgrade kernel to 3.10 and above on Centos 6.8 server machine

I have server with centos 6.8 and many wordpress sites running on it. I want to start using Docker in this server. But Docker requires Kernel > 3.10 Presently my kernel is: Linux 2.6.32-642.3.1....
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1answer
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Use Quota in Ubuntu 16.04 in normal way

I was trying to setup quota for my ftp users on fresh Ubuntu 16.04. I was using this flow But at the end came to flowing error, after running "quotaon /" i got error quotaon: using //aquota.user ...
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1answer
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How to copy wifi kernel from one version of Android x86 to another

I am using Android x86 8.1 rc-2 in my PC. The problem is that WiFi is not working on it. I had even used Android x86 7.1 rc-2 in my PC and WiFi was working on that. How can I copy wifi kernel from ...
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No console after installing new kernel (from ELRepo)

I got a new Dell R530 server recently and have installed Centos 7.5 (1804) on it (tried 17.04 as well!). I installed new kernel from elrepo on the system. The issue I am encountering is that if I boot ...
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New hard drive makes core 1 to stick at 100%

So, I just bought a Seagate Barracuda 1TB 2.5" 5400 RPM to my laptop, and I installed the HDD in the CD Drive slot using an adapter. The disk works well, but one of the cores of my CPU sticks to 100% ...
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How to get the list of the kernel parameters which are supported by the actual kernel?

How can I get the list of all the possible kernel parameters which are supported by the actual kernel?
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Kernel 4.19 Freeze my CPU

Everybody, I have installed the 4.19 Linux Kernel @ Manjaro updated to 18rc, and I need to known ¿if this new scheduler is compatible with older CPU like the mine (Core 2 Quad Q6600)? because this ...
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1answer
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How to find IP address in WinDbg Windows Kernel Debugging

I found this article, from OSR forums, however it didn't work in Windows 10 2: kd> x srvnet!SrvAdminIpAddressList 81fb06b8 srvnet!SrvAdminIpAddressList = <no type information> 2: kd> du ...
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Can I write the current running kernel to a file?

I deleted the content of the /boot directory of my SyS ARM storage server. When you do this the server loads the kernel from netboot. Is there any way I can copy the current running kernel (netboot ...
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VirtualBox: “Kernel driver not installed (rc=1908)”

I'm trying to use VirtualBox (to run Outlook natively under Windows), but I keep having errors. I initially had this very same error under Manjaro Linux, in which I could just install VirtualBox from ...
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1answer
346 views

How to control CPU Usage of ntoskrnl.exe!MiWalkPageTablesRecursively

Following the post on tracking high CPU usage by the kernel, I thought I had debugged an issue that had been plaguing me, namely 20-30% consistent CPU usage by the System process. See my previous post ...
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1answer
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How to boot Slax into text mode

Older versions of Slax had a boot choice of a text menu. I want to use it because it is much faster to boot and i only need few commands to start some backups over the network or work with files. ...
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1answer
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No one in the internet explains how to change the sys folder on ubuntu

I just installed Ubuntu in my notebook but it is not possible to change the brightness of the external monitor connected in VGA with the SO slider. I did various research on the net and I came to a ...
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How to identify and alleviate unresponsive Windows Kernel lockup problems

Hello SuperUser community, I have been experiencing an issue for a while now on my main computer, I have been kind of putting it off to the side, but I my brother now using that machine to play ...
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Uninterruptible Procees / High CPU

Lately I’ve seen a lot of gluster processes stuck in a IO wait. These processes are in the D state yet using 100% CPU. My question is this: Can the Linux kernel run any other process WHILE this ...
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Why is my custom centos kernel not booting? No source changes were made

I followed this guide to rebuild my 3.10.0-327 kernel (CentOS 7.2): https://wiki.centos.org/HowTos/Custom_Kernel I will be making changes to it, but even if I make no source changes, it does not boot ...
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1answer
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How to install linux-headers package for Linux kernel 4.15.0-2 in Debian

This will no doubt be an easy question for anyone who knows anything about Debian and Linux, but that apparently doesn't include me... I need the header files for my kernel, namely 4.15.0-2-686-pae. ...
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How to make ccache with CONFIG_GCC_PLUGINS=y work as well as when it is unset, while compiling kernel?

I'm trying to compile a Qubes OS VM kernel which has the following .config options set: CONFIG_GCC_PLUGINS=y CONFIG_GCC_PLUGIN_LATENT_ENTROPY=y CONFIG_GCC_PLUGIN_STRUCTLEAK=y I am on a Fedora 28 ...
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Why isn't it possible to run Linux natively on a jailbreakable iPhone? [closed]

There have been Linux ports to several now-outdated iOS devices, the most recent being the generation based on the Apple A4 SoC (iPhone 4, iPad 1, iPod 4G). According to the now-defunct iDroid project ...
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Effect of enabled kernel debug mode on Windows Server

I have a problem which shows up sporadically on Windows Server (Cannot bind TCP Port but netstat does not show any usage). I think I would be able to look at the kernel structures. For this I would ...
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2answers
336 views

Virtual and Physical address mapping in 32 bit Windows

Correct me I am wrong. Q1) My understanding is that in 32 bit mode we get 4GB virtual address space. Is this because 32 bit Windows can only support 4 GB physical RAM.? Q2) Every process get its own ...
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1answer
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does power supply redundant failure cause kernel panic? [closed]

Just after one of the power supply failed, the following error was recoreded in syslog. (the OS is ubuntu 14.04.) I am running a JVM (java virtual machine) with 64 HEAP on server with 128 RAM. do you ...
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11answers
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Would an executable need an OS kernel to run?

I know that when the source code, in say C++, is compiled, the output from the compiler is the machine code (executable) which I thought were instructions to the CPU directly. Recently I was reading ...
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156 views

Memory management in 32-bit Windows

In a 32-bit system is the 4GB virtual address space for the whole OS or is it for individual process? If it is for the whole OS, then does the OS fools every process that it has its own 4GB of ...
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installing mtu and processing pmtu

When working with the GRE tunnel, I encountered a problem. If you let the traffic through the tunnel rt_pmtu be installed in 1476, then I try to lower the Mtu on the GRE tunnel to 1300, but as a ...
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cleanup /boot folder Linux Mint 19

Using 64-bit Linux Mint 19 MATE. Found How to clean the /boot directory on LINUX Mint? but my issue is a bit different. Uninstalled with apt purge all old kernels but still see old files (abi, config, ...
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kernel 4.17.x did not work for ATI graphic card

I run fedora 28. After updating to kernel 4.17.2 the graphic card only works on hdmi. All other ports did not work anymore. I can't find any bug report ( only my own ones ). Is there any chance to ...
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Linux kernel 4.16.17 stuck loading initrd image on boot

Since version 4.16.17 of the linux kernel grub2 is stuck on loading initrd image. I've read some people are experiencing something similar on Fedora. Those reports say the problem is RNG (random ...
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Missing file when making kernel 4.14.51

Not sure what happened here. I'm trying to upgrade my Linux kernel from 4.9.x to 4.14.x and the below happened: In file included from arch/x86/decode.c:26:0: arch/x86/../../elf.h:22:18: fatal error: ...
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2answers
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How do I disable kernel logging into the systemd journal?

I'm using a device that spams kernel messages excessively (10-100 messages a second, Mediatek drivers...), where it is infeasible to remove the logging from the kernel itself (spread across hundreds ...
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1answer
956 views

Installing virtualbox on kali linux

I am running kali linux 2017.3 4.13.10-1kali2. I have tried to install and run virtualbox to practice on some old OSs. problem is virtualbox always doesn't work no matter how much I try to install ...
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1answer
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Wiimote on linux mint – recognised perfectly as event in /dev/input, but not as js

I spent the day trying to get my wiimote to work on my linux mint machine. The results are mixed. Using xwiimote or rather xwiishow I could determine that every sensor and button inside the device ...
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0answers
124 views

Upgrading CentOS 6.x kernel packages with CentOS 7 kernel packages

I have a question, I want to update the kernel packages on CentOS 6.9 server for security updates with the latest kernel package from CentOS 7. http://mirror.centos.org/centos/7/updates/x86_64/...
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1answer
199 views

how to enable gvt-g on the 4.17 kernel for centos7.5

https://github.com/intel/gvt-linux/w...Tg_Setup_Guide I follow this article to do ubuntu 18.04 make install new kernel enable gvt-g is good, but rhel7.5 or cenots7.5 can not work Please help me
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1answer
470 views

Create debian ISO with custom kernels and packages

I'm trying to create a custom Debian ISO with software that I have built and packaged to .deb. I have my system running on a virtual machine and have fully tested my packages. For the software to work ...
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1answer
249 views

Windows and ubuntu won't boot due to kernel error

I have an acer laptop(AMD Processor) with dual boot configuration of windows 10 and ubuntu 16.04 LTS. I tried booting windows 10 last night and i got blue screen with kernel security check failure. ...
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0answers
541 views

how to downgrade to previous/specific kernel?

I'm trying to instal VirtualBox on Fedora28, but packages which should exist does not exist, for some XY reason. [mmucha@localhost yum.repos.d]$ uname -r 4.16.6-302.fc28.x86_64 [mmucha@localhost yum....
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1answer
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The `System` process has a high CPU usage. ntoskrnl.exe!KeReleaseInStackQueuedSpinLock+0x1e0 is the culprit. How to fix it? [duplicate]

I noticed that the System process has a high CPU usage (specifically, around 100% of 1 core). Following Troubleshoot High CPU usage by the "System" process, I opened the properties of System in ...
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1answer
66 views

excessively print the kernel log bnx2x: [bnx2x_get_regs:987(eth2)]Generating register dump. Might trigger harmless GRC timeouts

My server print the log about "bnx2x: [bnx2x_get_regs:987(eth*)]Generating register dump. Might trigger harmless GRC timeouts" every hour. It has started today and continues print the log every hour. ...
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0answers
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Force process and kernel module to one core exclusively [duplicate]

I'm just in the phase of evaluating new possibilities, so this question may be a bit strange. I have a Quad-Core CPU which has to do some realtime tasks (it has access to some GPIOs, so this is ...
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0answers
101 views

Relationship between hardware clock and system clock on shutdown [closed]

I am using Centos 7 with kernel 3.10 and have hwclock and chrony installed and running. It is written that system clock is set from hardware clock on boot time. (here http://tldp.org/HOWTO/Clock-2....
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2answers
1k views

vmlinuz is missing from my system, how to fix it?

All Linux should come with vmlinuz under "/", and "/boot/" as well. However, my system doesn't have it: % ls -l /vmlinuz* /initrd* /boot/vmlinuz* ls: cannot access '/vmlinuz*': No such file or ...
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Use mount to access a “proc” folder with my user

Is it possible to use mount to access a "proc" folder with my user? Hypothetical example: mount -t proc -o umask=0022,gid=<MY_GID>,uid=<MY_UID> /proc/<MY_PID>/root /home/<...
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sound driver - snd-aloop kernel module setup issue with AWS EC2 ubuntu 16.04 instance

Unable to use snd-aloop audio driver in AWS EC2 ubuntu 16.04 instance On running modprobe on snd-aloop $modprobe snd-aloop modprobe: FATAL: Module snd-aloop not found in directory /lib/modules/4.4.0-...