MUWASEC

# builder gcc
https://github.com/a13xp0p0v/kernel-build-containers

# enable debug kconfig
Kernel hacking -> Generic Kernel Debugging Instruments -> KGDB: kernel debugger
Kernel hacking -> Compile-time checks and compiler options -> Compile the kernel with debug info
scripts/config --enable DEBUG_INFO
scripts/config --enable DEBUG_KERNEL
scripts/config --disable CC_OPTIMIZE_FOR_SIZE
scripts/config --enable GDB_SCRIPTS

MUWASEC

size=0 to size=0x38
[task:0xffff88800536a780 exploit         ] __kmalloc_node_noprof         : 0xffff888005473440 (size: 0x40   name: kmalloc-64)
[task:0xffff88800536a780 exploit         ] __kmalloc_node_noprof         : 0xffff888005473d40 (size: 0x40   name: kmalloc-64)
[task:0xffff88800536a780 exploit         ] __kmalloc_node_noprof         : 0xffff8880054732c0 (size: 0x40   name: kmalloc-64)
[task:0xffff88800536a780 exploit         ] __kmalloc_node_noprof         : 0xffff888005473c40 (size: 0x40   name: kmalloc-64)
[task:0xffff88800536a780 exploit         ] __kmalloc_node_noprof         : 0xffff888005473580 (size: 0x40   name: kmalloc-64)
[task:0xffff88800536a780 exploit         ] __kmalloc_node_noprof         : 0xffff888005473680 (size: 0x40   name: kmalloc-64)
[task:0xffff88800536a780 exploit         ] __kmalloc_node_noprof         : 0xffff888005473c80 (size: 0x40   name: kmalloc-64)
[task:0xffff88800536a780 exploit         ] __kmalloc_node_noprof         : 0xffff888005473ec0 (size: 0x40   name: kmalloc-

MUWASEC

#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <unistd.h>
#include <sys/io.h>
#include <sys/types.h>
#include <inttypes.h>
#include "utils.h"

MUWASEC

# Maintainer: Aviel Warschawski <[email protected]>
# https://raw.githubusercontent.com/archlinuxcn/repo/e5e16b97748fa4b3ac4a070a1f4b3070bc651e9c/alarmcn/gdb-multiarch/PKGBUILD

pkgname=gdb-multiarch
_pkgname=${pkgname%-multiarch}
pkgver=15.1
pkgrel=1
pkgdesc="The GNU Debugger for all gdb supported architectures (i386/arm/mips...)"
arch=("i686" "x86_64" "aarch64")
url="http://www.gnu.org/software/${_pkgname}"

MUWASEC

'''
CoderByte: Array Challenge
Have the function ArrayChallenge(arr) take the array of numbers stored in arr which will contain integers that represent the amount in dollars that a single stock is worth, and return the maximum profit that could have been made by buying stock on day x and selling stock on day y where y > x. For example: if arr is [44, 30, 24, 32, 35, 30, 40, 38, 15] then your program should return 16 because at index 2 the stock was worth $24 and at index 6 the stock was then worth $40, so if you bought the stock at 24 and sold it at 40, you would have made a profit of $16, which is the maximum profit that could have been made with this list of stock prices.

If there is not profit that could have been made with the stock prices, then your program should return -1. For example: arr is [10, 9, 8, 2] then your program should return -1.

Examples
Input: [10,12,4,5,9]
Output: 5
Input: [14,20,4,12,5,11]

MUWASEC

#!/bin/bash

# Install Dependencies
sudo pacman -S git svn gd lib32-gcc-libs patch make bison fakeroot

# Checkout glibc source
svn checkout --depth=empty svn://svn.archlinux.org/packages
cd packages
svn update glibc
cd glibc/repos/core-x86_64