Re: Changing thread_info->task, does it harm?

[Christoph Hellwig <hch@infradead.org>]

On Sun, Aug 14, 2005 at 03:41:49PM +0300, Samer Sarhan wrote:
> Hi,
> I had a design problem of a Linux module (Linux 2.6.11) that lead me to do this:
> 
> int work_fn(void* data);
> task_t my_task;
> task_t* kthread = kthread_create(work_fn, NULL, "Task 1");
> // assume kthread create was successfully...
> my_task = *kthread;
> // change what current maceo points to...
> kthread->thread_info->task = &my_task;
> ...
> ...
> wake_up_process(&my_task);
> ...
> ..
> 
> well... is it dangerous to change what current macro points to through
> changing thread_info->task?

Yes.  It's totally broken.

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