Hi,
I've got a followning problem.
I am trying to start a kernel thread. I do this by calling kernel_thread
from module's init function with CLONE_VM|CLONE_FS|CLONE_FILES.
(The same are used several times in kernel, CLONE_VM is always added inside
anyway). Then the thread calls daemonize(). It works, except that after second
ps I get a BUG in mmdrop, that is a check for destroying init_mm.
The problem seems to be, that while kernel_thread() references the mm of
current process (insmod), the thread starts whith mm == &init_mm.
And exit_mm in daemonize is called on this, breaking it's ref-count.
I test this on the user-mode port.
I am not able to trace down where the memory map gets changet. Please, tell
me what should I look for.
--------------------------------------------------------------------------------
- Jan Hudec `Bulb' <bulb@ucw.cz>
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