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| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2015-12-15 21:01:53 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-01-22 20:55:50 -0800 |
| commit | 1dc0f7538f3985522397587e10eb1a0eb29d7342 (patch) | |
| tree | 29bbb44e7df73f0c992ececa7f929435736e18f7 | |
| parent | d46972df5551d3b4b5c3b4cc4abb45d613769e1e (diff) | |
| download | lwn-1dc0f7538f3985522397587e10eb1a0eb29d7342.tar.gz lwn-1dc0f7538f3985522397587e10eb1a0eb29d7342.zip | |
fou: clean up socket with kfree_rcu
[ Upstream commit 3036facbb7be3a169e35be3b271162b0fa564a2d ]
fou->udp_offloads is managed by RCU. As it is actually included inside
the fou sockets, we cannot let the memory go out of scope before a grace
period. We either can synchronize_rcu or switch over to kfree_rcu to
manage the sockets. kfree_rcu seems appropriate as it is used by vxlan
and geneve.
Fixes: 23461551c00628c ("fou: Support for foo-over-udp RX path")
Cc: Tom Herbert <tom@herbertland.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/ipv4/fou.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c index e0fcbbbcfe54..bd903fe0f750 100644 --- a/net/ipv4/fou.c +++ b/net/ipv4/fou.c @@ -24,6 +24,7 @@ struct fou { u16 type; struct udp_offload udp_offloads; struct list_head list; + struct rcu_head rcu; }; #define FOU_F_REMCSUM_NOPARTIAL BIT(0) @@ -417,7 +418,7 @@ static void fou_release(struct fou *fou) list_del(&fou->list); udp_tunnel_sock_release(sock); - kfree(fou); + kfree_rcu(fou, rcu); } static int fou_encap_init(struct sock *sk, struct fou *fou, struct fou_cfg *cfg) |