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Date:      Wed, 23 Jan 2019 09:22:02 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 234846] [lagg] race condition when adding port
Message-ID:  <bug-234846-7501-5xY93R8F2C@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-234846-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-234846-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D234846

--- Comment #19 from Alexandre martins <alexandre.martins@stormshield.eu> -=
--
Hi Eugene,

The patch seems to work for the creation part.

However, the race into the destroy part is still here:

Thread 1 (network):
ether_input checks the type of the interface and will call lagg_input

Thread 2 (ifconfig -laggport):
delete the port, and resets the type of the iface and set ifp->if_lagg =3D =
NULL;

Thread 1 (network):
is entering lagg_input function and crash because the pointer if_lagg is now
NULL

--=20
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