bonding: add missed __rcu annotation for curr_active_slave

[ Upstream commit 3d0b738fc5adf9f380702ac1424672e4b32c3781 ]

There is one direct accesses to bond->curr_active_slave in
bond_miimon_commit(). Protected it by rcu_access_pointer()
since the later of this function also use this one.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: e95cc44763a4 ("bonding: do failover when high prio link up")
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 29d0a64..af35a46 100644 (file)
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -2698,7 +2698,7 @@ static void bond_miimon_commit(struct bonding *bond)
 
                        bond_miimon_link_change(bond, slave, BOND_LINK_UP);
 
-                       if (!bond->curr_active_slave || slave == primary)
+                       if (!rcu_access_pointer(bond->curr_active_slave) || slave == primary)
                                goto do_failover;
 
                        continue;