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Date:      Tue, 23 Apr 2019 18:33:08 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 233955] [panic] Page fault in in6_purgeaddr (triggered by net/wireguard)
Message-ID:  <bug-233955-7501-nFXmiIuOho@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-233955-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-233955-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233955

Kyle Evans <kevans@freebsd.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kevans@freebsd.org

--- Comment #30 from Kyle Evans <kevans@freebsd.org> ---
r346602 probably fixes the ip6_purgeaddr panic noted here. The tun mtx is
dropped while we purge addresses/routes and the TUN_OPEN flag was cleared,
giving tundestroy a chance to rototill the interface somewhere in the middle of
that.

I've opened https://reviews.freebsd.org/D20027 to try and settle the ioctl
race.

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