netdev - Re: Please merge IPv6 fix for drop fragment smaller than MTU

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Message-ID: <20190401214847.7aa5l4wpiyita75x@breakpoint.cc>
Date:   Mon, 1 Apr 2019 23:48:47 +0200
From:   Florian Westphal <fw@...len.de>
To:     Captain Wiggum <captwiggum@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Florian Westphal <fw@...len.de>,
        Eric Dumazet <edumazet@...gle.com>,
        Peter Oskolkov <posk@...gle.com>, netdev@...r.kernel.org
Subject: Re: Please merge IPv6 fix for drop fragment smaller than MTU

Captain Wiggum <captwiggum@...il.com> wrote:
> An error was introduced in 4.9.134 (and the other LTS branches also).
> This causes 18 test cases from the TAHI IPv6 test suite to fail.
> I added you to the mail thread about this subject a month back.
> It has been fixed in upstream for some time now, but not in the LTS branches.
> Please merge this undo-patch into the LTS branches.

This is only safe after backporting Peters work to convert
IPv6 to use RB Trees for the reassembly queues,
otherwise a revert adds back the DoS vector.

commit d4289fcc9b16b89619ee1c54f829e05e56de8b9a
net: IP6 defrag: use rbtrees for IPv6 defrag

commit 997dd96471641e147cb2c33ad54284000d0f5e35
net: IP6 defrag: use rbtrees in nf_conntrack_reasm.c