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Date: Thu, 25 Dec 2003 23:40:56 -0500 (EST)
From: tuc@ttsg.com
Reply-To: tuc@ttsg.com
To: FreeBSD-gnats-submit@freebsd.org
Cc:
Subject: lock order reversal
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>Number:         60581
>Category:       kern
>Synopsis:       lock order reversal
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Dec 25 20:50:17 PST 2003
>Closed-Date:    Thu Dec 25 22:10:01 PST 2003
>Last-Modified:  Thu Dec 25 22:10:01 PST 2003
>Originator:     Tuc
>Release:        FreeBSD 5.2-CURRENT i386
>Organization:
TTSG Internet Services, Inc.
>Environment:
System: FreeBSD vjofn2.ttsg.com 5.2-CURRENT FreeBSD 5.2-CURRENT #0: Fri Dec 19 15:38:09 EST 2003 root@vjofn2.ttsg.com:/usr/obj/usr/src/sys/VJOFN2 i386


>Description:

	Found the following in my /var/log/messages

Dec 25 20:20:14 vjofn2 kernel: lock order reversal
Dec 25 20:20:14 vjofn2 kernel: 1st 0xc0954900 UMA lock (UMA lock) @ /usr/src/sys/vm/uma_core.c:1200
Dec 25 20:20:14 vjofn2 kernel: 2nd 0xc1031100 system map (system map) @ /usr/src/sys/vm/vm_map.c:2210
Dec 25 20:20:14 vjofn2 kernel: Stack backtrace:
Dec 25 20:30:53 vjofn2 kernel: lock order reversal
Dec 25 20:30:53 vjofn2 kernel: 1st 0xca910420 vm object (vm object) @ /usr/src/sys/vm/swap_pager.c:1323
Dec 25 20:30:53 vjofn2 kernel: 2nd 0xc0953d80 swap_pager swhash (swap_pager swhash) @ /usr/src/sys/vm/swap_pager.c:1838
Dec 25 20:30:53 vjofn2 kernel: 3rd 0xc103aa50 vm object (vm object) @ /usr/src/sys/vm/uma_core.c:873
Dec 25 20:30:53 vjofn2 kernel: Stack backtrace:

>How-To-Repeat:

	Dunno
>Fix:

	Dunno
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: kris 
State-Changed-When: Thu Dec 25 22:09:33 PST 2003 
State-Changed-Why:  
Known false-positive; see the mailing list archives for extensive 
discussion. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=60581 
>Unformatted:
