netdev - Re: [PATCH v3 net-next] tcp: Remove use of daddr

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Date:   Tue, 17 Oct 2017 14:44:38 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     David Ahern <dsahern@...il.com>
Cc:     netdev@...r.kernel.org, xiyou.wangcong@...il.com
Subject: Re: [PATCH v3 net-next] tcp: Remove use of daddr_cache in tracepoint

On Tue, 2017-10-17 at 13:09 -0700, David Ahern wrote:
> Running perf in one window to capture tcp_retransmit_skb tracepoint:
>     $ perf record -e tcp:tcp_retransmit_skb -a
> 
> And causing a retransmission on an active TCP session (e.g., dropping
> packets in the receiver, changing MTU on the interface to 500 and back
> to 1500) triggers a panic:

> Remove use of ipv6_pinfo in favor of data in sock_common.
> 
> Fixes: e086101b150a ("tcp: add a tracepoint for tcp retransmission")
> Signed-off-by: David Ahern <dsahern@...il.com>
> ---

Reviewed-by: Eric Dumazet <edumazet@...gle.com>

Thanks David !