[Bug 218009] dtrace -Z flag does not install newly loaded probes

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Wed Mar 22 15:21:37 UTC 2017


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218009

            Bug ID: 218009
           Summary: dtrace -Z flag does not install newly loaded probes
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: domagoj.stolfa at gmail.com

When one runs a command such as:

# dtrace -Z -n 'fbt:vmm::'

and after that loads the bhyve kernel module, vmm using:

# kldload vmm

the probes do not seem to fire. This seems to indicate an issue with the fbt
provider in FreeBSD, as the same behaviour with different modules works fine in
illumos.

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