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Date: Wed, 02 Mar 2011 13:05:43 +0600
From: Eugene Grosbein <egrosbein@rdtc.ru>
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To: Gleb Smirnoff <glebius@freebsd.org>
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Cc: Przemyslaw Frasunek <przemyslaw@frasunek.com>,
	Mike Tancsa <mike@sentex.net>, mav@freebsd.org, bz@freebsd.org,
	"net@freebsd.org" <net@freebsd.org>
Subject: Re: Netgraph/mpd5 stability issues
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Something new in my logs yesterday:

Mar  1 16:06:38 k-45-pc-1 kernel: Accessing freed node node: ID [2e5c7a]: type 'tee', 0 hooks, flags 0x9, 0 refs, mpd11699-vlan373-781-lt:
Mar  1 16:06:38 k-45-pc-1 kernel: Last active @ /home/src/sys/netgraph/ng_base.c, line 2257
Mar  1 16:06:38 k-45-pc-1 kernel: problem discovered at file /home/src/sys/netgraph/ng_base.c, line 3621
Mar  1 16:06:38 k-45-pc-1 kernel: Accessing freed node node: ID [2e5c7a]: type 'tee', 0 hooks, flags 0x9, 1 refs, mpd11699-vlan373-781-lt:
Mar  1 16:06:38 k-45-pc-1 kernel: Last active @ /home/src/sys/netgraph/ng_base.c, line 3621
Mar  1 16:06:38 k-45-pc-1 kernel: problem discovered at file /home/src/sys/netgraph/ng_base.c, line 2377
Mar  1 16:06:38 k-45-pc-1 kernel: Accessing freed node node: ID [2e5c7a]: type 'tee', 0 hooks, flags 0x9, 1 refs, mpd11699-vlan373-781-lt:
Mar  1 16:06:38 k-45-pc-1 kernel: Last active @ /home/src/sys/netgraph/ng_base.c, line 2377
Mar  1 16:06:38 k-45-pc-1 kernel: problem discovered at file /home/src/sys/netgraph/ng_base.c, line 2257

This is the same periodically panicing 8.2-PRERELEASE with NETGRAPH_DEBUG and couple of patches
from Gleb and Julian. Still cannot get crashdump (system hangs while dumping core).

Eugene Grosbein