kern/72504: nfsd result mbufs-overruns

[ingo rohlfs]

>Number:         72504
>Category:       kern
>Synopsis:       nfsd result mbufs-overruns
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Oct 11 08:30:27 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     dr. ingo rohlfs
>Release:        FreeBSD 5.2.1-RELEASE-p9 i386
>Organization:
>Environment:
System: FreeBSD dm008.avat.local 5.2.1-RELEASE-p9 FreeBSD 5.2.1-RELEASE-p9 #0: Thu Aug 26 13:53:24 CEST 2004 rohlfs at dm008.avat.local:/usr/obj/usr/src/sys/DM008 i386
>Description:
	FreeBSD-server runs out of mbufs, while nfsd has a connection with a 
	nfs-client only be capable of nfs-version 2.
>How-To-Repeat:
	Start nfsd
	Connect with a linux-client only capable for nfs V2
	Observe netstat -m over some hours
	Disconnect client
	See that the continuous growing of mbufs stops
>Fix:
	1) daily reboot
	2) switch client to nfs-version 3 :-((

	Suggestion: Bug in V2-code, so that mbufs are not deleted after useage.
>Release-Note:
>Audit-Trail:
>Unformatted: