Messages in this thread | | | Date | Thu, 14 Mar 2002 18:54:15 -0800 (PST) | From | Andy Tai <> | Subject | null pointer error in raw device I/O from kernel threads |
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Hi, I am trying to do I/O to raw devices from within kernel threads. I got null pointer error because the raw device code references current->mm, but for kernel threads, current->mm is 0 (NULL). I tried to force it to use current->active_mm but the I/O operation returns EFAULT (-14).
Any advice on how to make raw device I/O work from kernel threads is appreciated.
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