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Old

Liquorix kernel seems more responsive than Debian's default

Posted 05-28-2014 at 10:46 AM by the dsc (linux-related notes)

I'm somewhat skeptical of the tuned-kernel movement, so I didn't install it expecting to make my OS "fly" or anything. It just happened that recently there had been some weird kernel error messages ("perf samples too long"), and, related to that or not, the OS would become sluggish with lots of read-or-write activity (on my old HDD that must be really slow, to add to sluggishness). Apparently you can sort of solve it in a sysctl-like way, printing a "0" to some file/parameter,...
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Posted in Uncategorized
Views 390 Comments 1 the dsc is offline
Old

LFS: Building a kernel

Posted 12-05-2012 at 07:53 AM by druuna
Updated 01-31-2014 at 03:22 AM by druuna (Added links to tools sourcecode)
Tags kernel, lfs

# -------------------------------------------------------------------------- #
# General information
# -------------------------------------------------------------------------- #


The chapter that deals with setting up the kernel (Linux-x.y.x) is too limited in my opinion. I do realise that my extension is out-of-scope for the LFS developers, but I do think that many will benefit from it, especially if you want to tinker with kernels and their settings.
...
LQ Veteran
Posted in General
Views 1432 Comments 0 druuna is offline
Old

Mapping address to line - Linux

Posted 08-31-2011 at 12:20 AM by hi2arun
Tags debug, kernel, panic

Well.. when you write your own kernel module, in the devel stage, chances for bringin down the kernel (panic.. ah sick) are huge.
Oops (pet name for kernel panic) mostly spits lots of martian traces that include stack addresses, registers and its value, EIP, etc.

To know the culprit line that caused panic, decode the address to line as follows:
EIP wud luk like...
Code:
EIP: [] ip_check+0x45a/0x21a [ip_tables] SS:ESP 0049:c098281a
Look at the selection...
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Posted in Uncategorized
Views 1056 Comments 0 hi2arun is offline
Old

ARM versatile kernels for QEMU [last update 2010-11-05]

Posted 11-04-2010 at 09:54 PM by Web31337 (In The Middle Of Nowhere [edK's blog])
Updated 11-04-2010 at 10:06 PM by Web31337
Tags arm, kernel, qemu

WARNING: before downloading any of these binary kernels you should know that there is NO WARRANTY, you are using them AT YOUR OWN RISK!!!
If you are paranoid: yes, I am untrusted source of binary packages, these kernels should only be used for testing purposes, you are adviced not to enable networking for qemu at all.

It is better that you fetch the config and build it yourself using cross-toolkit in your distro.

These binary kernels were tested in Gentoo Linux x86_64...
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Posted in opensource
Views 2950 Comments 0 Web31337 is offline
Old

Help prevent kernel and software cracking: reminder

Posted 01-13-2010 at 07:01 AM by Web31337 (In The Middle Of Nowhere [edK's blog])

I've made this post as a reminder, to link to it from forum.
Probably, if you were linked here, you had troubles when someone gained root at your system.

The problem I'm writing this post about is kernel/software cracking.
Many people had troubles with crackers who gained root at their servers or desktops. Some of users had all permissions and privileges set up correctly but still got kernel BOF'ed and rooted.
For instance, let us take most exploitable vulnerability,...
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Posted in security
Views 1147 Comments 0 Web31337 is offline

  



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