svn commit: r306220 - head/sys/cddl/dev/systrace

[Ngie Cooper]

On Thu, Sep 22, 2016 at 4:22 PM, Mark Johnston <markj at freebsd.org> wrote:
> Author: markj
> Date: Thu Sep 22 23:22:53 2016
> New Revision: 306220
> URL: https://svnweb.freebsd.org/changeset/base/306220
>
> Log:
>   Re-check the systrace probe ID before calling dtrace_probe().
>
>   Otherwise there exists a narrow window during which a syscall probe can be
>   disabled and cause a concurrently-running thread to call dtrace_probe()
>   with an invalid probe ID.
>
>   Reported by:  ngie
>   MFC after:    1 week
>   Sponsored by: Dell EMC Isilon

Thanks Mark :)!