5.15-stable review patch. If anyone has any objections, please let me know.
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From: Nikolay Aleksandrov razor@blackwall.org
[ 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 --- drivers/net/bonding/bond_main.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 61ff4bb22e647..177c90e9a4685 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -597,6 +597,8 @@ static bool bond_ipsec_offload_ok(struct sk_buff *skb, struct xfrm_state *xs) bond = netdev_priv(bond_dev); rcu_read_lock(); curr_active = rcu_dereference(bond->curr_active_slave); + if (!curr_active) + goto out; real_dev = curr_active->dev;
if (BOND_MODE(bond) != BOND_MODE_ACTIVEBACKUP)