netdev - Re: [PATCH net] net: hsr: fix possible NULL deref in hsr_handle

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Message-Id: <20200204.092817.704234794848111610.davem@davemloft.net>
Date:   Tue, 04 Feb 2020 09:28:17 +0100 (CET)
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: hsr: fix possible NULL deref in
 hsr_handle_frame()

From: Eric Dumazet <edumazet@...gle.com>
Date: Mon,  3 Feb 2020 10:15:07 -0800

> hsr_port_get_rcu() can return NULL, so we need to be careful.
 ...
> Fixes: c5a759117210 ("net/hsr: Use list_head (and rcu) instead of array for slave devices.")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Reported-by: syzbot <syzkaller@...glegroups.com>

Applied and queued up for -stable, thanks Eric.