From nobody@FreeBSD.ORG  Sat Jun 10 08:45:25 2000
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Date: Sat, 10 Jun 2000 08:45:25 -0700 (PDT)
From: Adam@PerfectGenius.Com
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To: freebsd-gnats-submit@FreeBSD.org
Subject: mounting NFS can be done multiple times CAUSING SYSTEM LOCKUP
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>Number:         19175
>Category:       misc
>Synopsis:       mounting NFS can be done multiple times CAUSING SYSTEM LOCKUP
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jun 10 08:50:00 PDT 2000
>Closed-Date:    Thu May 24 12:45:42 PDT 2001
>Last-Modified:  Thu May 24 12:45:58 PDT 2001
>Originator:     Adam W. Botbyl
>Release:        5.0-CURRENT 20000609 & 4.0-RELEASE
>Organization:
Perfect Genius Online
>Environment:
NFS Server:
FreeBSD Altara.PerfectGenius.Com 4.0-RELEASE FreeBSD 4.0-RELEASE #3: Sat Jun 10 10:29:42 EDT 2000     root@Altara.PerfectGenius.Com:/usr/src/sys/compile/Altara  alpha
NFS Client:
FreeBSD CoDech.PerfectGenius.Com 5.0-20000609-CURRENT FreeBSD 5.0-20000609-CURRENT #2: Sat Jun 10 06:16:18 EDT 2000     adam@CoDech.PerfectGenius.Com:/usr/src/sys/compile/CoDech  i386
>Description:
when you do:
mount <ip>:/mountpoint /mountpoint 
it dosent register that its mounted
If you do this ~131 will make TOTAL SYSTEM LOCKUP with CONSOLE REBOOT
...yes i was bored =)
This could also lead to a mount problem with 131 mount points too. god forbid...
>How-To-Repeat:
mount ip:/point /point

>Fix:
Do checking on NFS mounts

>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: iedowse 
State-Changed-When: Mon Mar 26 11:53:05 PST 2001 
State-Changed-Why:  
The ability to stack multiple filesystems over a single mountpoint 
is a feature, not a bug (maybe `mount -a' could handle this better 
though). 

Can you confirm whether or not the lockups/reboots still occur on 
a recent -stable? I cannot repeat this problem. With around 450 
NFS mounts over one mountpoint I ran out of reserved ports so the 
remote mountd stopped accepting the connections, but I experienced 
no crashes or lockups. 


http://www.freebsd.org/cgi/query-pr.cgi?pr=19175 
State-Changed-From-To: feedback->closed 
State-Changed-By: kris 
State-Changed-When: Thu May 24 12:45:42 PDT 2001 
State-Changed-Why:  
Feedback timeout 

http://www.FreeBSD.org/cgi/query-pr.cgi?pr=19175 
>Unformatted:
