From: David Ahern <dsahern@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org, xiyou.wangcong@gmail.com
Subject: Re: [PATCH v2 net-next] tcp: Check daddr_cache before use in tracepoint
Date: Wed, 18 Oct 2017 08:54:10 -0600 [thread overview]
Message-ID: <8f1c0c37-e39d-de47-f4f8-5d76e36ddfb1@gmail.com> (raw)
In-Reply-To: <20171018.141540.2101290573491932828.davem@davemloft.net>
On 10/18/17 7:15 AM, David Miller wrote:
> From: David Ahern <dsahern@gmail.com>
> Date: Mon, 16 Oct 2017 15:32:07 -0700
>
>> 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:
> ...
>> Check that daddr_cache is non-NULL before de-referencing.
>>
>> Fixes: e086101b150a ("tcp: add a tracepoint for tcp retransmission")
>> Signed-off-by: David Ahern <dsahern@gmail.com>
>
> Applied.
>
Hi Dave: There was a v3 to this one. I'll send a diff patch.
prev parent reply other threads:[~2017-10-18 14:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-16 22:32 [PATCH v2 net-next] tcp: Check daddr_cache before use in tracepoint David Ahern
2017-10-16 22:35 ` Cong Wang
2017-10-18 13:15 ` David Miller
2017-10-18 14:54 ` David Ahern [this message]
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