Subject: kern/8129: de driver causes mclpool deadlocks
To: None <>
From: Charles M. Hannum <>
List: netbsd-bugs
Date: 08/01/1999 16:29:59
>Number:         8129
>Category:       kern
>Synopsis:       de driver causes mclpool deadlocks
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Aug  1 16:20:01 1999
>Originator:     Charles M. Hannum
        Internetwork Hacker
>Release:        -current as of 19990729

	The de driver likes to keep mbuf clusters allocated all the
	time.  This causes deadlocks in the default configuration (256
	mbuf clusters) with two de cards; the de driver will chew up
	all the mbuf clusters, and the network stack will simply
	freeze up.

	The configuration in question uses one de card to talk to a
	cable modem network, and one to talk to `internal' machines.
	The problem occurs ~every time I use rsync.

        [None provided.]