Troubles with calling kern_execve from kthread_create

[botcser]

Hello, Everyone.

I'm loading kernel module by kldload(8)...
I'm trying to call kern_execve() from kthread_create(): if I call kern_execve() directly from start() - everything works fine, but if I call kthread_create() from start() and then call kern_execve() from the created child - I'm getting the following error

errno 2 "No such file or directory"

Why do I get this error?

Or, how do I execute a binary file from loading kernel module, while loading parallel and not wait until this binary will finish his work

 

[botcser]

Get from reverse:

curthread->td_proc->p_fd->fd_cdir ?= 0 -> return errno 2

And for what this check...