can: af_can.c use rcu_barrier() on module unload.

This module uses rcu_call() thus it should use rcu_barrier() on module unload. Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk> Acked-by: Oliver Hartkopp <oliver@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>

can: af_can.c use rcu_barrier() on module unload.
This module uses rcu_call() thus it should use rcu_barrier() on module unload. Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk> Acked-by: Oliver Hartkopp <oliver@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Jesper Dangaard Brouer · David S. Miller
1 parent 67137f3cc7
Showing 1 changed file with 2 additions and 0 deletions Side-by-side Diff
net/can/af_can.c
@@ -903,6 +903,8 @@
 	}
 	spin_unlock(&can_rcvlists_lock);
  
+	rcu_barrier(); /* Wait for completion of call_rcu()'s */
+
 	kmem_cache_destroy(rcv_cache);
 }
...	...	@@ -903,6 +903,8 @@
903	903	}
904	904	spin_unlock(&can_rcvlists_lock);
905	905
	906	+ rcu_barrier(); /* Wait for completion of call_rcu()'s */
	907	+
906	908	kmem_cache_destroy(rcv_cache);
907	909	}
908	910