amd64/185290: Dtrace does not work on -stable/10

[Robert David]

>Number:         185290
>Category:       amd64
>Synopsis:       Dtrace does not work on -stable/10
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-amd64
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Dec 30 12:10:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Robert David
>Release:        stabel/10 (10.0-PRERELEASE)
>Organization:
none
>Environment:
FreeBSD notebook.linsystem.net 10.0-PRERELEASE FreeBSD 10.0-PRERELEASE #4 53624fa(HEAD): Mon Dec 30 12:34:25 CET 2013     root at notebook.linsystem.net:/usr/obj/rpool/FREEBSD/src/sys/thinkpad_02  amd64

>Description:
All simple dtrace oneliners I tryed has the same output:

root at notebook ~ # dtrace -n 'syscall:::entry { @num[execname] = count(); }'
dtrace: invalid probe specifier syscall:::entry { @num[execname] = count(); }: "/usr/lib/dtrace/io.d", line 43: operator -> cannot be applied to a forward declaration: no struct devstat definition is available


>How-To-Repeat:
Try any dtrace oneliner on actual stable/10 branch.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: