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Message-Id: <200803051111.m25BBh3u065715@www.freebsd.org>
Date: Wed, 5 Mar 2008 11:11:43 GMT
From: Rick van der Zwet <rick@wirelessleiden.nl>
To: freebsd-gnats-submit@FreeBSD.org
Subject: unionfs cross mount -> kernel panic
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>Number:         121385
>Category:       kern
>Synopsis:       [unionfs] unionfs cross mount -> kernel panic
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-fs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Mar 05 11:20:03 UTC 2008
>Closed-Date:    Thu Mar 06 16:30:08 CST 2014
>Last-Modified:  Thu Mar 06 16:30:08 CST 2014
>Originator:     Rick van der Zwet
>Release:        FreeBSD-7-STABLE
>Organization:
Stichting Wireless Leiden
>Environment:
FreeBSD  7.0-RELEASE FreeBSD 7.0-RELEASE #0: Sun Feb 24 19:59:52 UTC 2008     root@logan.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386

>Description:
Able to crash/freeze kernel when accidentally mounting to directories on
top of each-other using unionfs 
>How-To-Repeat:
# mkdir -p /unionfs/disk1
# mkdir -p /unionfs/disk2
# mount -t unionfs /unionfs/disk1 /unionfs/disk2
# mount -t unionfs /unionfs/disk2 /unionfs/disk1
# touch /unionfs/disk1/foo
<freeze or crash>
>Fix:
Workaround: carefully check your syntax when mounting

>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: freebsd-bugs->daichi 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Wed Mar 5 16:54:40 UTC 2008 
Responsible-Changed-Why:  
Over to maintainer. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=121385 
State-Changed-From-To: open->open 
State-Changed-By: linimon 
State-Changed-When: Wed Jul 3 00:50:32 UTC 2013 
State-Changed-Why:  
commit bit has been taken in for safekeeping. 


Responsible-Changed-From-To: daichi->freebsd-fs 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Wed Jul 3 00:50:32 UTC 2013 
Responsible-Changed-Why:  

http://www.freebsd.org/cgi/query-pr.cgi?pr=121385 

From: =?ISO-8859-1?Q?Olivier_Cochard=2DLabb=E9?= <olivier@cochard.me>
To: bug-followup@freebsd.org, rick@wirelessleiden.nl
Cc:  
Subject: Re: kern/121385: [unionfs] unionfs cross mount -> kernel panic
Date: Tue, 8 Oct 2013 19:53:16 +0200

 Hi,
 
 this problem is still reproductible on 10.0-ALPHA4.
 
 Regards,
 
 Olivier
State-Changed-From-To: open->closed 
State-Changed-By: bdrewery 
State-Changed-When: Thu Mar 6 16:30:07 CST 2014 
State-Changed-Why:  
duplicate of kern/172334 

http://www.freebsd.org/cgi/query-pr.cgi?pr=121385 
>Unformatted:
