netdev - Re: [PATCH net] net: fix data-race in neigh_event

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Message-Id: <20191108.140027.642572694965920256.davem@davemloft.net>
Date:   Fri, 08 Nov 2019 14:00:27 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     edumazet@...gle.com
Cc:     netdev@...r.kernel.org, eric.dumazet@...il.com,
        syzkaller@...glegroups.com
Subject: Re: [PATCH net] net: fix data-race in neigh_event_send()

From: Eric Dumazet <edumazet@...gle.com>
Date: Thu,  7 Nov 2019 20:08:19 -0800

> KCSAN reported the following data-race [1]
> 
> The fix will also prevent the compiler from optimizing out
> the condition.
> 
> [1]
> 
> BUG: KCSAN: data-race in neigh_resolve_output / neigh_resolve_output
 ...
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Reported-by: syzbot <syzkaller@...glegroups.com>

Applied and queued up for -stable.