From 59f211181b5b10d4a95e1b9226febb0c0b6497c6 Mon Sep 17 00:00:00 2001 From: Willem de Bruijn Date: Tue, 16 Jun 2015 12:51:37 -0400 Subject: packet: free packet_rollover after synchronize_net Destruction of the po->rollover must be delayed until there are no more packets in flight that can access it. The field is destroyed in packet_release, before synchronize_net. Delay using rcu. Fixes: 0648ab70afe6 ("packet: rollover prepare: per-socket state") Suggested-by: Eric Dumazet Signed-off-by: Willem de Bruijn Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/packet/internal.h | 1 + 1 file changed, 1 insertion(+) (limited to 'net/packet/internal.h') diff --git a/net/packet/internal.h b/net/packet/internal.h index c035d263c1e8..e20b3e8829b8 100644 --- a/net/packet/internal.h +++ b/net/packet/internal.h @@ -89,6 +89,7 @@ struct packet_fanout { struct packet_rollover { int sock; + struct rcu_head rcu; atomic_long_t num; atomic_long_t num_huge; atomic_long_t num_failed; -- cgit v1.2.3