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Message-Id: <20171021.015320.1529021296296615087.davem@davemloft.net>
Date: Sat, 21 Oct 2017 01:53:20 +0100 (WEST)
From: David Miller <davem@...emloft.net>
To: eric.dumazet@...il.com
Cc: netdev@...r.kernel.org, willemb@...gle.com, edumazet@...gle.com
Subject: Re: [PATCH net] packet: avoid panic in packet_getsockopt()
From: David Miller <davem@...emloft.net>
Date: Sat, 21 Oct 2017 01:50:08 +0100 (WEST)
> From: Eric Dumazet <eric.dumazet@...il.com>
> Date: Wed, 18 Oct 2017 15:08:24 -0700
>
>> From: Eric Dumazet <edumazet@...gle.com>
>>
>> syzkaller got crashes in packet_getsockopt() processing
>> PACKET_ROLLOVER_STATS command while another thread was managing
>> to change po->rollover
>>
>> Using RCU will fix this bug. We might later add proper RCU annotations
>> for sparse sake.
>>
>> Fixes: a9b6391814d5 ("packet: rollover statistics")
>> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
>
> Applied and queued up for -stable, but:
>
>> Willem de Bruijn <willemb@...gle.com>
>
> I didn't know what kind of tag you intended to use here for Willem
> so just deleted the line.
I just noticed 'v2' of this patch and replaced it in time before I
pushed out :-)
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