Linux - cannot generete core dump

Question

I am doing some buffer overflow tests and i need to generate a core dump, since i dont wont to attach debugger to it because its a multithread application.So what i did is

ulimit -c unlimited

and it looks like evrything went correctly, but when i sent data to create buffer overflow, it should be a core file on desktop but it is not (my application is on desktop)

I also tryed ulimit -c nolimit

but that didnt work, it throws me invalid number.

I even wrote a new program that is causing segmentation fault but there is no core file.

Iam running Kali Linux.

Answer 1

ulimit -c will change the configuration in the current session only. You will probably need to edit /etc/profile and /etc/sysctl.conf.

For more info, refer the this page: Debugging Linux Cores