Kernel messages

Peter Chant <peteRE.DeleteThis@MpeteOzilla.Vco.ukE> wrote:
> Question, how can you close such a device?

A device, just like any other file is closed by a process which does a
system call to close (see man close for more information).

Killed processes also get all their file descriptors closed.

By doing

ls -al /proc/*/fd

you can see which files and devices different processes have open. Another
way to find this information is lsof.

regards Henrik
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Peter Chant <peteRE.TakeThisOut@mpeteozilla.vco.uke> wrote:
> Jerry Peters wrote:
>
>> Unplugging an open usb-serial device seems to be the most common way
>> to provoke a kernel oops, so I'd guess that's what did it.
>> Supposed to be fixed in the latest (2.6.31.1) kernel.
>
> Good that it is fixed. Question, how can you close such a device? Is it me
> failing to kill gpsd?
>
> Pete
>
Terminating the program. Either the program will close the device, or
the kernel will close it during process termination. Of course if the
program hangs and can't be killed, you're stuck.

Jerry