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Message-Id: <200510010907.j91975B7089417@www.freebsd.org>
Date: Sat, 1 Oct 2005 09:07:05 GMT
From: Konstantin Prokazoff <kp@svr.kiev.ua>
To: freebsd-gnats-submit@FreeBSD.org
Subject: taskqueue_enqueue_fast uses spinlock on sleep mutex in fbsd-5.4-stable
X-Send-Pr-Version: www-2.3

>Number:         86779
>Category:       kern
>Synopsis:       taskqueue_enqueue_fast uses spinlock on sleep mutex in fbsd-5.4-stable
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    linimon
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Oct 01 09:10:17 GMT 2005
>Closed-Date:    Mon Sep 04 16:33:11 GMT 2006
>Last-Modified:  Mon Sep 04 16:33:11 GMT 2006
>Originator:     Konstantin Prokazoff
>Release:        5.4
>Organization:
SVR Ltd.
>Environment:
5.4-STABLE
>Description:
SMP on 1xXeon (HT enabled), INTR_FAST handler enqueues task to taskqueue_thread using taskqueue_enqueue_fast. Kernel panics, cause taskqueue_enqueue_fast tries to spinlock sleep mutex taskqueue.
>How-To-Repeat:
taskqueue_enqueue_fast() in INTR_FAST handler code.
>Fix:
Not known.
>Release-Note:
>Audit-Trail:

From: Kris Kennaway <kris@obsecurity.org>
To: Konstantin Prokazoff <kp@svr.kiev.ua>
Cc: freebsd-gnats-submit@FreeBSD.org
Subject: Re: kern/86779: taskqueue_enqueue_fast uses spinlock on sleep mutex in fbsd-5.4-stable
Date: Sat, 1 Oct 2005 12:27:52 -0400

 On Sat, Oct 01, 2005 at 09:07:05AM +0000, Konstantin Prokazoff wrote:
 
 > SMP on 1xXeon (HT enabled), INTR_FAST handler enqueues task to
 > taskqueue_thread using taskqueue_enqueue_fast. Kernel panics, cause
 > taskqueue_enqueue_fast tries to spinlock sleep mutex taskqueue.
 
 You forgot to include the panic traceback.  Can you please do so?
 
 Kris
State-Changed-From-To: open->feedback 
State-Changed-By: linimon 
State-Changed-When: Sat Jun 3 18:45:55 UTC 2006 
State-Changed-Why:  
Note that submitter was asked for feedback some time ago.  Is this problem 
still apparent? 

http://www.freebsd.org/cgi/query-pr.cgi?pr=86779 
Responsible-Changed-From-To: freebsd-bugs->linimon 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Sat Jun 3 18:46:38 UTC 2006 
Responsible-Changed-Why:  
Track, since I asked. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=86779 
State-Changed-From-To: feedback->closed 
State-Changed-By: linimon 
State-Changed-When: Mon Sep 4 16:32:41 UTC 2006 
State-Changed-Why:  
Feedback timeout (~1 year). 

http://www.freebsd.org/cgi/query-pr.cgi?pr=86779 
>Unformatted:
