From nobody@FreeBSD.org  Fri Apr 13 21:27:02 2012
Return-Path: <nobody@FreeBSD.org>
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 470CB106564A
	for <freebsd-gnats-submit@FreeBSD.org>; Fri, 13 Apr 2012 21:27:02 +0000 (UTC)
	(envelope-from nobody@FreeBSD.org)
Received: from red.freebsd.org (red.freebsd.org [IPv6:2001:4f8:fff6::22])
	by mx1.freebsd.org (Postfix) with ESMTP id 32E998FC0A
	for <freebsd-gnats-submit@FreeBSD.org>; Fri, 13 Apr 2012 21:27:02 +0000 (UTC)
Received: from red.freebsd.org (localhost [127.0.0.1])
	by red.freebsd.org (8.14.4/8.14.4) with ESMTP id q3DLR24l060146
	for <freebsd-gnats-submit@FreeBSD.org>; Fri, 13 Apr 2012 21:27:02 GMT
	(envelope-from nobody@red.freebsd.org)
Received: (from nobody@localhost)
	by red.freebsd.org (8.14.4/8.14.4/Submit) id q3DLR2L6060145;
	Fri, 13 Apr 2012 21:27:02 GMT
	(envelope-from nobody)
Message-Id: <201204132127.q3DLR2L6060145@red.freebsd.org>
Date: Fri, 13 Apr 2012 21:27:02 GMT
From: Ryan Stone <rstone@FreeBSD.org>
To: freebsd-gnats-submit@FreeBSD.org
Subject: USDT probes not cleaned up when process exits uncleanly
X-Send-Pr-Version: www-3.1
X-GNATS-Notify:

>Number:         166918
>Category:       kern
>Synopsis:       [dtrace] USDT probes not cleaned up when process exits uncleanly
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    markj
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Apr 13 21:30:11 UTC 2012
>Closed-Date:    
>Last-Modified:  Mon Apr 21 17:21:39 UTC 2014
>Originator:     Ryan Stone
>Release:        8.3-RELEASE
>Organization:
>Environment:
>Description:
I was playing with the USDT example on the wiki:

http://wiki.freebsd.org/DTrace/userland

I ended up having to kill -9 some of the db instances, and I ended up in the following state:

(module-1:wheel)# dtrace -l | grep database
32081 database25896                db                              main query-done
32082 database25896                db                              main query-start
32083 database28195                db                              main query-done
32084 database28195                db                              main query-start
32085 database39041                db                              main query-done
32086 database39041                db                              main query-start
(module-1:wheel)# kill 25896 28195 39041
-bash: kill: (25896) - No such process
-bash: kill: (28195) - No such process
-bash: kill: (39041) - No such process

I would suspect that 25896 et al. were test invocations that were crashed by dtrace(1).
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
gnn@ has asked for DTrace PRs
Responsible-Changed-From-To: freebsd-bugs->gnn 
Responsible-Changed-By: rstone 
Responsible-Changed-When: Mon Apr 16 19:23:09 UTC 2012 
Responsible-Changed-Why:  


http://www.freebsd.org/cgi/query-pr.cgi?pr=166918 
Responsible-Changed-From-To: gnn->markj 
Responsible-Changed-By: gnn 
Responsible-Changed-When: Mon Apr 21 17:21:26 UTC 2014 
Responsible-Changed-Why:  
Hand over to the person doing most of the DTrace work. 


http://www.freebsd.org/cgi/query-pr.cgi?pr=166918 
>Unformatted:
