From owner-freebsd-bugs@FreeBSD.ORG  Fri Sep 12 15:51:30 2014
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
Delivered-To: freebsd-bugs@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 72655523
 for <freebsd-bugs@FreeBSD.org>; Fri, 12 Sep 2014 15:51:30 +0000 (UTC)
Received: from kenobi.freebsd.org (kenobi.freebsd.org
 [IPv6:2001:1900:2254:206a::16:76])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 58CF4157
 for <freebsd-bugs@FreeBSD.org>; Fri, 12 Sep 2014 15:51:30 +0000 (UTC)
Received: from bugs.freebsd.org ([127.0.1.118])
 by kenobi.freebsd.org (8.14.9/8.14.9) with ESMTP id s8CFpUIC022126
 for <freebsd-bugs@FreeBSD.org>; Fri, 12 Sep 2014 15:51:30 GMT
 (envelope-from bugzilla-noreply@freebsd.org)
From: bugzilla-noreply@freebsd.org
To: freebsd-bugs@FreeBSD.org
Subject: [Bug 192863] Data race caused by double increment of pq->pq_cnt
Date: Fri, 12 Sep 2014 15:51:30 +0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 10.0-RELEASE
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: Affects Only Me
X-Bugzilla-Who: pfonseca@mpi-sws.org
X-Bugzilla-Status: Issue Resolved
X-Bugzilla-Priority: ---
X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: bug_status resolution
Message-ID: <bug-192863-8-stbdly641G@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-192863-8@https.bugs.freebsd.org/bugzilla/>
References: <bug-192863-8@https.bugs.freebsd.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-bugs>,
 <mailto:freebsd-bugs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-bugs/>
List-Post: <mailto:freebsd-bugs@freebsd.org>
List-Help: <mailto:freebsd-bugs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-bugs>,
 <mailto:freebsd-bugs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 12 Sep 2014 15:51:30 -0000

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192863

pfonseca@mpi-sws.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|Needs Triage                |Issue Resolved
         Resolution|---                         |Works As Intended

--- Comment #1 from pfonseca@mpi-sws.org ---
After some disussion with developers, the conclussion was that the data race is
benign:

"The pageout code does not care about exact queue length, it only takes
it as an advise to not over-scan the queue. The fact that read gets a
snapshot value which might be outdated immediately does not matter in
this situation. At worst, scan would fall off the end of queue, if it is
drained by other means in parallel."

-- 
You are receiving this mail because:
You are the assignee for the bug.