netdev - Re: [PATCH bpf-next] bpf: clear the ip_tunnel

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Message-ID: <cf175e85-07f2-6c05-d9be-35b725bab9ef@iogearbox.net>
Date:   Wed, 25 Apr 2018 09:54:49 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     William Tu <u9012063@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH bpf-next] bpf: clear the ip_tunnel_info.

On 04/25/2018 08:46 AM, William Tu wrote:
> The percpu metadata_dst might carry the stale ip_tunnel_info
> and cause incorrect behavior.  When mixing tests using ipv4/ipv6
> bpf vxlan and geneve tunnel, the ipv6 tunnel info incorrectly uses
> ipv4's src ip addr as its ipv6 src address, because the previous
> tunnel info does not clean up.  The patch zeros the fields in
> ip_tunnel_info.
> 
> Signed-off-by: William Tu <u9012063@...il.com>
> Reported-by: Yifeng Sun <pkusunyifeng@...il.com>

Since this is a fix, I've applied this to bpf, thanks William!