Disable the randomization of the stack in linux

Today, I finally found a method for shutting down linux's random processing of Stacks. I 've been struggling with this issue several times, but Baidu doesn't have any information, I had to use an early system such as ubuntu4 to learn how to mine vulnerabilities (no way, I can't deal with stack randomization as a beginner). today... today, I finally found a method for shutting down linux's random processing of Stacks. I 've been struggling with this issue several times, but Baidu doesn't have any information, I had to use an early system such as ubuntu4 to learn how to mine vulnerabilities (no way, I can't deal with the randomization of stacks as a beginner). I checked the materials today and found a solution by chance. ========================================================== ========================================================== ============= Getting started with buffer overflow light speed: "... your Kernel performs stack random processing. this mechanism is used to prevent overflow. it is very useful for security, but it brings a lot of trouble for you to learn. for the convenience of learning, run the following command to disable the kernel function: sudo root. however, echo 0>/proc/sys/kernel/randomize_va_space. if it is a RedHat series, you can disable it by using echo 0>/proc/sys/kernel/exec-shield-randomize.) "======================================================== ========================================================== ================ In ubuntu10.4, the experiment is as follows: more/proc/sys/kernel/randomize_va_space 2 This is the original value ==================== ============ try to use vi to write 0, tip: "/proc/sys/kernel/randomize_va_space" E667: Fsync failed Press ENTER or type command to continue. why? A: U cannot edit the/proc files with vi. if u want to change its value u can echo to that file like echo "20000000">/proc/sys/kernel ================ ==================================#echo 0>/proc/sys/kernel/randomize_va_space # more/proc/ sys/kernel/randomize_va_space 0 ================================== === Use the following program, check whether the modification is successful: more find_start.c # include Unsigned long find_start (void) {_ asm _ ("movl % esp, % eax");} int main () {printf ("0x % x \ n ", find_start ());}. /find_start 0xbffff738. /find_start 0xbffff738. /find_start 0xbffff738. /find_start 0xbffff738. /find_start 0xbffff738 is the same, indicating that the linux stack randomization function has been disabled.