Hi, I am inserting a module(device driver) using insmod. I want to send a message from this module to an user process. For this I used msgsnd with buffer in the call as a local variable. I am getting an error "EFAULT" for this call. However this did not happen when I made the driver code as a part of kernel and not as a module. Any idea about what could be the problem and how to solve it?
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