rcu_dereference occurs in update section. Replacement by
rcu_dereference_protected in order to prevent lockdep
complaint.
Found by Linux Driver Verification project (linuxtesting.org)
Signed-off-by: Denis Efremov <yefremov.denis@gmail.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
int i;
for (i = 0; i < MAX_MACVTAP_QUEUES; i++) {
- if (rcu_dereference(vlan->taps[i]) == q)
+ if (rcu_dereference_protected(vlan->taps[i],
+ lockdep_is_held(&macvtap_lock)) == q)
return i;
}