Does someone know why I'm getting this
message(anyone who encountered this problem) and could
someone give me some info's about kernel_threads,
besides what is in "Linux Kernel Development" book.
Thanks.
Unfortunately not much information regarding kernel threads is easily found.
This link shows a little example using kernel threads (it is for 2.4 kernel but it should give you some insight):
http://www.scs.ch/~frey/linux/kernelthreads.html
If you want to know more you have to look in the source code:
http://lxr.linux.no/source/kernel/kthread.c#L67
the Linux kernel uses kernel threads for softirqs and pdflush, so these should also be helpful:
http://lxr.linux.no/source/kernel/softirq.c
http://lxr.linux.no/source/mm/pdflush.c
Regards,
Razvan