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Re: kern/51877: carp related panic during shutdown

The following reply was made to PR kern/51877; it has been noted by GNATS.

From: Hauke Fath <>
Subject: Re: kern/51877: carp related panic during shutdown
Date: Wed, 18 Jan 2017 16:25:57 +0100

 On 01/18/17 13:40, Christos Zoulas wrote:
 >  Can you put a printf in carp_detach carp_ifdetach and carp_clone_destroy
 >  and see when they are called during shutdown?
 Tried that
 % strings /netbsd8 | grep '@christos'
 @christos: carp_ifdetach()
 @christos: carpdetach() detaching %s
 @christos: carp_clone_destroy() %s
 but none show up - the kernel panics earlier.
 > |  wm1: detached
 > |  igphy0: detached
 > |  carp0: state transition from: MASTER -> to: INIT
 > |  Mutex error: lockdebug_barrier: spin lock held
 > I think that carp should detach before the physical interfaces?
 There's an idea... but
 % fgrep carpdev /etc/ifconfig.carp0
 carpdev wm0
 which is still attached.

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