> 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.
there is a bug before 2.4.17-um9 or so in the uml code which i was able to
trigger
and traced enough for jdike to find the bug which was cauing the
same thing to happen what version of uml are you running ?
James
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