* [PATCH net] bridge: fix br_multicast_query_expired() bug
@ 2015-05-28 11:42 Eric Dumazet
2015-05-28 12:06 ` Thadeu Lima de Souza Cascardo
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Eric Dumazet @ 2015-05-28 11:42 UTC (permalink / raw)
To: David Miller
Cc: netdev, Linus Lüssing, Steinar H. Gunderson,
Stephen Hemminger, bridge
From: Eric Dumazet <edumazet@google.com>
br_multicast_query_expired() querier argument is a pointer to
a struct bridge_mcast_querier :
struct bridge_mcast_querier {
struct br_ip addr;
struct net_bridge_port __rcu *port;
};
Intent of the code was to clear port field, not the pointer to querier.
Fixes: 2cd4143192e8 ("bridge: memorize and export selected IGMP/MLD querier port")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Linus Lüssing <linus.luessing@web.de>
Cc: Steinar H. Gunderson <sesse@samfundet.no>
---
net/bridge/br_multicast.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index a3abe6ed111e..22fd0419b314 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1822,7 +1822,7 @@ static void br_multicast_query_expired(struct net_bridge *br,
if (query->startup_sent < br->multicast_startup_query_count)
query->startup_sent++;
- RCU_INIT_POINTER(querier, NULL);
+ RCU_INIT_POINTER(querier->port, NULL);
br_multicast_send_query(br, NULL, query);
spin_unlock(&br->multicast_lock);
}
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH net] bridge: fix br_multicast_query_expired() bug
2015-05-28 11:42 [PATCH net] bridge: fix br_multicast_query_expired() bug Eric Dumazet
@ 2015-05-28 12:06 ` Thadeu Lima de Souza Cascardo
2015-05-28 16:42 ` Linus Lüssing
2015-05-31 6:33 ` David Miller
2 siblings, 0 replies; 4+ messages in thread
From: Thadeu Lima de Souza Cascardo @ 2015-05-28 12:06 UTC (permalink / raw)
To: Eric Dumazet
Cc: Steinar H. Gunderson, netdev, bridge, Linus Lüssing,
David Miller
On Thu, May 28, 2015 at 04:42:54AM -0700, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet@google.com>
>
> br_multicast_query_expired() querier argument is a pointer to
> a struct bridge_mcast_querier :
>
> struct bridge_mcast_querier {
> struct br_ip addr;
> struct net_bridge_port __rcu *port;
> };
>
> Intent of the code was to clear port field, not the pointer to querier.
>
> Fixes: 2cd4143192e8 ("bridge: memorize and export selected IGMP/MLD querier port")
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> Cc: Linus Lüssing <linus.luessing@web.de>
> Cc: Steinar H. Gunderson <sesse@samfundet.no>
> ---
> net/bridge/br_multicast.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
> index a3abe6ed111e..22fd0419b314 100644
> --- a/net/bridge/br_multicast.c
> +++ b/net/bridge/br_multicast.c
> @@ -1822,7 +1822,7 @@ static void br_multicast_query_expired(struct net_bridge *br,
> if (query->startup_sent < br->multicast_startup_query_count)
> query->startup_sent++;
>
> - RCU_INIT_POINTER(querier, NULL);
> + RCU_INIT_POINTER(querier->port, NULL);
> br_multicast_send_query(br, NULL, query);
> spin_unlock(&br->multicast_lock);
> }
>
>
>
> --
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH net] bridge: fix br_multicast_query_expired() bug
2015-05-28 11:42 [PATCH net] bridge: fix br_multicast_query_expired() bug Eric Dumazet
2015-05-28 12:06 ` Thadeu Lima de Souza Cascardo
@ 2015-05-28 16:42 ` Linus Lüssing
2015-05-31 6:33 ` David Miller
2 siblings, 0 replies; 4+ messages in thread
From: Linus Lüssing @ 2015-05-28 16:42 UTC (permalink / raw)
To: Eric Dumazet
Cc: David Miller, netdev, Linus Lüssing, Steinar H. Gunderson,
Stephen Hemminger, bridge
On Thu, May 28, 2015 at 04:42:54AM -0700, Eric Dumazet wrote:
> Intent of the code was to clear port field, not the pointer to querier.
Acked-by: Linus Lüssing <linus.luessing@c0d3.blue>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH net] bridge: fix br_multicast_query_expired() bug
2015-05-28 11:42 [PATCH net] bridge: fix br_multicast_query_expired() bug Eric Dumazet
2015-05-28 12:06 ` Thadeu Lima de Souza Cascardo
2015-05-28 16:42 ` Linus Lüssing
@ 2015-05-31 6:33 ` David Miller
2 siblings, 0 replies; 4+ messages in thread
From: David Miller @ 2015-05-31 6:33 UTC (permalink / raw)
To: eric.dumazet; +Cc: netdev, linus.luessing, sesse, stephen, bridge
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 28 May 2015 04:42:54 -0700
> From: Eric Dumazet <edumazet@google.com>
>
> br_multicast_query_expired() querier argument is a pointer to
> a struct bridge_mcast_querier :
>
> struct bridge_mcast_querier {
> struct br_ip addr;
> struct net_bridge_port __rcu *port;
> };
>
> Intent of the code was to clear port field, not the pointer to querier.
>
> Fixes: 2cd4143192e8 ("bridge: memorize and export selected IGMP/MLD querier port")
> Signed-off-by: Eric Dumazet <edumazet@google.com>
Applied, thanks Eric.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2015-05-28 11:42 [PATCH net] bridge: fix br_multicast_query_expired() bug Eric Dumazet
2015-05-28 12:06 ` Thadeu Lima de Souza Cascardo
2015-05-28 16:42 ` Linus Lüssing
2015-05-31 6:33 ` David Miller
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