From helge.oldach@atosorigin.com  Mon Mar  8 00:59:10 2004
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Date: Mon, 8 Mar 2004 09:58:47 +0100 (MET)
From: Helge Oldach <helge.oldach@atosorigin.com>
To: tjr@freebsd.org (Tim Robbins)
Cc: pawmal-posting@freebsd.lublin.pl, stable@freebsd.org,
	FreeBSD-gnats-submit@freebsd.org
In-Reply-To: <20040303134001.GA63144@cat.robbins.dropbear.id.au> from Tim Robbins at "Mar 3, 2004  2:40: 1 pm"
Subject: Re: Using read-only NULLFS leads to panic. gdb output included, e asy to reproduce.

>Number:         63918
>Category:       kern
>Synopsis:       Re: Using read-only NULLFS leads to panic. gdb output included, e asy to reproduce.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Mar 08 01:00:40 PST 2004
>Closed-Date:    Thu Apr 01 10:50:17 PST 2004
>Last-Modified:  Thu Apr 01 10:50:17 PST 2004
>Originator:     
>Release:        
>Organization:
>Environment:
>Description:
 Hi,
 
 Tim Robbins:
 >On Wed, Mar 03, 2004 at 12:09:30PM +0100, Pawel Malachowski wrote:
 >
 >> On Wed, Mar 03, 2004 at 11:25:36AM +1100, Tim Robbins wrote:
 >> 
 >> > There are known bugs in nullfs in all 4.x releases to date, and in 5.0.
 >> > If I have time, I may MFC the fixes some time before 4.10 is released.
 >> 
 >> Sounds interesting.
 >> 
 >> > Can you reproduce these problems on 5.1 or 5.2?
 >> 
 >> Procedure:
 >> mount_null -o ro /usr/ports /mnt/1
 >> find /usr/ports -type f -perm -u+s &
 >> find /mnt/1 -type f -perm -u+s &
 >> ...
 >> <about 30-40 processess of find(1) was enough>
 >> 
 >> 
 >> I was not able to reproduce panic on 5.1-RELEASE system.
 >> 
 >> However, I've reproduced second problem described in this PR,
 >> which happened to me on 4.9-STABLE once.
 >[...]
 >
 >I'm sorry - the commit that fixed the deadlock issue you're describing
 >here ocurred between 5.1 and 5.2, not between 5.0 and 5.1 like I
 >had previously thought. Try 5.2, or try this patch on 5.1. If it solves
 >your problem, I'll backport it to 4.x for you later this week.
 
 Did I miss this MFC, or haven't you back-ported it yet?
 
 Thanks!
 
 Helge
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: linimon 
State-Changed-When: Thu Apr 1 10:49:54 PST 2004 
State-Changed-Why:  
Misfiled followup to kern/63662; text has been copied over. 


Responsible-Changed-From-To: gnats-admin->freebsd-bugs 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Thu Apr 1 10:49:54 PST 2004 
Responsible-Changed-Why:  

http://www.freebsd.org/cgi/query-pr.cgi?pr=63918 
>Unformatted:
