netdev - Re: [PATCH net-next] net/ipv6: fix LOCKDEP issue in rt6_remove_exception

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Message-ID: <400a8f3f-4ab7-527f-59ed-454d2da8e828@gmail.com>
Date:   Tue, 24 Apr 2018 10:25:14 -0600
From:   David Ahern <dsahern@...il.com>
To:     Eric Dumazet <edumazet@...gle.com>,
        "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH net-next] net/ipv6: fix LOCKDEP issue in
 rt6_remove_exception_rt()

On 4/24/18 10:22 AM, Eric Dumazet wrote:
> rt6_remove_exception_rt() is called under rcu_read_lock() only.
> 
> We lock rt6_exception_lock a bit later, so we do not hold
> rt6_exception_lock yet.
> 
> Fixes: 8a14e46f1402 ("net/ipv6: Fix missing rcu dereferences on from")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Reported-by: syzbot <syzkaller@...glegroups.com>
> Cc: David Ahern <dsahern@...il.com>
> ---
>  net/ipv6/route.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
>

Acked-by: David Ahern <dsahern@...il.com>

Thanks, Eric.