Every execution of
lsof issues a warning about the TraceFS:
$ lsof any-file lsof: WARNING: can't stat() tracefs file system /sys/kernel/debug/tracing Output information may be incomplete. $ mount | grep trace tracefs on /sys/kernel/debug/tracing type tracefs (rw,relatime)
(This is on Ubuntu 15.10, fully updated)
Is it normal for TraceFS to be mounted during normal operation?
If so, how can I tell
lsof to skip it?