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Date:   Sat, 25 Mar 2017 01:30:29 +0100
From:   Solar Designer <>
To:     Eric Dumazet <>
Cc:     David Miller <>,
        netdev <>,
        Andrey Konovalov <>,
        Eric Dumazet <>
Subject: Re: [PATCH net] ping: implement proper locking

On Fri, Mar 24, 2017 at 04:29:45PM -0700, Eric Dumazet wrote:
> From: Eric Dumazet <>
> We got a report of yet another bug in ping
> ->disconnect() is not called with socket lock held.
> Fix this by acquiring ping rwlock earlier.
> Thanks to Alexander and Andrey for letting us know of this problem.
> Fixes: c319b4d76b9e ("net: ipv4: add IPPROTO_ICMP socket kind")
> Reported-by: Solar Designer <>
> Reported-by: Andrey Konovalov <>

We should credit the original reporter, who most likely found this by
fuzzing.  It's danieljiang0415 on GitHub and Twitter.  Unfortunately, I
don't know their e-mail address.  I'll try asking.


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