netdev - Re: netlink: GPF in sock

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Message-ID: <CAM_iQpX_KBEpL1dCBNMgZQ-VQJM9nmsVdRPVK-Aen9k0gV3f0w@mail.gmail.com>
Date:   Tue, 29 Nov 2016 15:13:42 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Richard Guy Briggs <rgb@...hat.com>
Cc:     Dmitry Vyukov <dvyukov@...gle.com>,
        David Miller <davem@...emloft.net>,
        Johannes Berg <johannes.berg@...el.com>,
        Florian Westphal <fw@...len.de>,
        Eric Dumazet <edumazet@...gle.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        netdev <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        syzkaller <syzkaller@...glegroups.com>
Subject: Re: netlink: GPF in sock_sndtimeo

On Tue, Nov 29, 2016 at 8:48 AM, Richard Guy Briggs <rgb@...hat.com> wrote:
> On 2016-11-26 17:11, Cong Wang wrote:
>> It is racy on audit_sock, especially on the netns exit path.
>
> I think that is the only place it is racy.  The other places audit_sock
> is set is when the socket failure has just triggered a reset.
>
> Is there a notifier callback for failed or reaped sockets?

Is NETLINK_URELEASE event what you are looking for?