Subject: kern/12151: kernel hang from nfs
To: None <>
From: Wolfgang Rupprecht <>
List: netbsd-bugs
Date: 02/07/2001 16:13:43
>Number:         12151
>Category:       kern
>Synopsis:       kernel hang from nfs
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Feb 07 16:16:00 PST 2001
>Originator:     Wolfgang Rupprecht
>Release:        NetBSD-current
W S Rupprecht Computer Consulting, Fremont CA
NetBSD 1.5R NetBSD 1.5R (WSRCC_INTEL) #0: Tue Feb  6 09:23:57 PST 2001 i386
Architecture: i386
Machine: i386
	I can get reliably hang the above kernel when executing the 
	following ls/rm -rf/mkdir in rapid succession.


	This happens on 2 different machines here where /home/wolfgang is
	Nfs mounted from another -current machine running a similar kernel.

	    alias dumptrash='echo dumping: ; ls -CFR ~/.trashcan ; /bin/rm -rf ~/.trashcan ; mkdir ~/.trashcan'

	    $ dumptrash
	    <hangs here>

	I can't break into DDB at this point and must use the reset button.
	This happens both from an ssh to the remote nfs client and when 
	logging in from xdm.  I have just tried it 6 times and I get 6

	The dumptrash alias works as expected when run on the nfs server 
	(which has the files in a ufs).