Originally Posted by pan64
probably a select in a user space app cannot freeze the system.
If you want to debug the kernel just google, you will find a lot of resources and howtos
Thanks for reply.
Obviously there is something buggy on kernel side. But as i understand some event in user-space triggered that buggy code on kernel side. And that event is a call to select. I am sure about this.
This is the first time i am working on kernel side and i am helpless.
Today i also tried to configured the netconsole on system(Ubuntu 11.10) that freezes so that i can see what happened, but netconsole module load failed on Ubuntu 11.10 due to eth0 doesn't support polling.
I also found some resources for debugging kernel modules but all those resources says that i must have to build the kernel. But i have a less powerfull machine for kernel build and it will take too much time, second for every change i have to build the kernel again and again. not a feasible solution.
So, now i am stuck in the middle of nowhere.