From owner-freebsd-bugs@FreeBSD.ORG  Fri Mar 23 21:20:13 2012
Return-Path: <owner-freebsd-bugs@FreeBSD.ORG>
Delivered-To: freebsd-bugs@hub.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id F2D971065673
	for <freebsd-bugs@hub.freebsd.org>;
	Fri, 23 Mar 2012 21:20:13 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id D7EF18FC1B
	for <freebsd-bugs@hub.freebsd.org>;
	Fri, 23 Mar 2012 21:20:13 +0000 (UTC)
Received: from freefall.freebsd.org (localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id q2NLKDBA051691
	for <freebsd-bugs@freefall.freebsd.org>; Fri, 23 Mar 2012 21:20:13 GMT
	(envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.14.5/8.14.5/Submit) id q2NLKDJ5051690;
	Fri, 23 Mar 2012 21:20:13 GMT (envelope-from gnats)
Date: Fri, 23 Mar 2012 21:20:13 GMT
Message-Id: <201203232120.q2NLKDJ5051690@freefall.freebsd.org>
To: freebsd-bugs@FreeBSD.org
From: Andriy Gapon <avg@FreeBSD.org>
Cc: 
Subject: Re: misc/166340: Process under FreeBSD 9.0 hangs in uninterruptable
 sleep with apparently no syscall (empty wchan)
X-BeenThere: freebsd-bugs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: Andriy Gapon <avg@FreeBSD.org>
List-Id: Bug reports <freebsd-bugs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/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, 23 Mar 2012 21:20:14 -0000

The following reply was made to PR misc/166340; it has been noted by GNATS.

From: Andriy Gapon <avg@FreeBSD.org>
To: bug-followup@FreeBSD.org, christian.esken@trivago.com
Cc:  
Subject: Re: misc/166340: Process under FreeBSD 9.0 hangs in uninterruptable
 sleep with apparently no syscall (empty wchan)
Date: Fri, 23 Mar 2012 23:17:12 +0200

 Hmm, sleepq_timedwait_sig() is supposed to react to signals.
 At least that's what its description says:
 
 /*
  * Block the current thread until it is awakened from its sleep queue,
  * it is interrupted by a signal, or it times out waiting to be awakened.
  */
 int
 sleepq_timedwait_sig(void *wchan, int pri)
 {
         int rcatch, rvalt, rvals;
 
         rcatch = sleepq_catch_signals(wchan, pri);
         rvalt = sleepq_check_timeout();
         rvals = sleepq_check_signals();
         thread_unlock(curthread);
         if (rcatch)
                 return (rcatch);
         if (rvals)
                 return (rvals);
         return (rvalt);
 }
 
 
 -- 
 Andriy Gapon