diff options
| author | Eric Dumazet <[email protected]> | 2013-12-11 14:46:51 -0800 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2013-12-11 20:21:10 -0500 |
| commit | 975022310233fb0f0193873d79a7b8438070fa82 (patch) | |
| tree | 2658e9259ca6a53e07a25fe399a4f61d15093220 /drivers/net/xen-netback/netback.c | |
| parent | a1bf1750871a6f242b0fdb174cc55d2c57e7ed66 (diff) | |
udp: ipv4: must add synchronization in udp_sk_rx_dst_set()
Unlike TCP, UDP input path does not hold the socket lock.
Before messing with sk->sk_rx_dst, we must use a spinlock, otherwise
multiple cpus could leak a refcount.
This patch also takes care of renewing a stale dst entry.
(When the sk->sk_rx_dst would not be used by IP early demux)
Fixes: 421b3885bf6d ("udp: ipv4: Add udp early demux")
Signed-off-by: Eric Dumazet <[email protected]>
Cc: Shawn Bohrer <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'drivers/net/xen-netback/netback.c')
0 files changed, 0 insertions, 0 deletions