Re: [PATCH] tracing/timerlat: Move hrtimer_init to timerlat_fd open()

On Thu, Feb 01, 2024 at 04:13:39PM +0100, Daniel Bristot de Oliveira wrote:

Currently, the timerlat's hrtimer is initialized at the first read of
timerlat_fd, and destroyed at close(). It works, but it causes an error
if the user program open() and close() the file without reading.

What error exactly happens?  Userspace, or the kernel crashes?

thanks,

greg k-h