bonding: fix null pointer deref in bond_ipsec_offload_ok
[ Upstream commit 95c90e4ad89d493a7a14fa200082e466e2548f9d ] We must check if there is an active slave before dereferencing the pointer. Fixes: 18cb261afd7b ("bonding: support hardware encryption offload to slaves") Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org> Reviewed-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -562,6 +562,8 @@ static bool bond_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *xs)
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bond = netdev_priv(bond_dev);
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rcu_read_lock();
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curr_active = rcu_dereference(bond->curr_active_slave);
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if (!curr_active)
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goto out;
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real_dev = curr_active->dev;
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if (BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP)
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