kern/139847: [geom_mbr] load/unload causes system to hang

Jaakko Heinonen jh at
Sun Nov 1 08:30:05 UTC 2009

The following reply was made to PR kern/139847; it has been noted by GNATS.

From: Jaakko Heinonen <jh at>
To: Gavin Atkinson <gavin at>, yuri at
Cc: bug-followup at
Subject: Re: kern/139847: [geom_mbr] load/unload causes system to hang
Date: Sun, 1 Nov 2009 10:29:29 +0200

 On 2009-10-31, Gavin Atkinson wrote:
 >  "kldunload geom_mbr" hangs, with the backtrace below.  It hangs while 
 >  holding the GEOM topology lock and the kernel linker lock, which is 
 I have described this GEOM problem here:
 (You are seeing the deadlock described in section 2.)
 There's also a link to a patch you could try.

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