[04/12] Staging: batman-adv: wait for call_rcu before unloading module
Commit Message
synchronize_rcu respective synchronize_net only waits for the rcu grace
period to elapse and we may fail to finish the calls which were made to
call_rcu in that time. In result the module could be unloaded during the
execution of the RCU callbacks.
rcu_barrier[1] will now wait for all outstanding RCU callbacks to finish
before continuing.
[1] Documentation/RCU/rcubarrier.txt
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
---
drivers/staging/batman-adv/main.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
@@ -72,7 +72,7 @@ static void __exit batman_exit(void)
destroy_workqueue(bat_event_workqueue);
bat_event_workqueue = NULL;
- synchronize_net();
+ rcu_barrier();
}
int mesh_init(struct net_device *soft_iface)