diff options
Diffstat (limited to 'freebsd/sys/net/if.c')
| -rw-r--r-- | freebsd/sys/net/if.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/freebsd/sys/net/if.c b/freebsd/sys/net/if.c index 5f0329fd..a9c28263 100644 --- a/freebsd/sys/net/if.c +++ b/freebsd/sys/net/if.c @@ -1109,6 +1109,15 @@ if_detach_internal(struct ifnet *ifp, int vmove, struct if_clone **ifcp) curvnet->vnet_ifcnt--; #endif epoch_wait_preempt(net_epoch_preempt); + + /* + * Ensure all pending EPOCH(9) callbacks have been executed. This + * fixes issues about late destruction of multicast options + * which lead to leave group calls, which in turn access the + * belonging ifnet structure: + */ + epoch_drain_callbacks(net_epoch_preempt); + /* * In any case (destroy or vmove) detach us from the groups * and remove/wait for pending events on the taskq. |