From 0523820482dcb42784572ffd2296c2f08c275a2b Mon Sep 17 00:00:00 2001 From: Timo Teras Date: Wed, 1 Oct 2008 05:17:54 -0700 Subject: [PATCH] af_key: Free dumping state on socket close Fix a xfrm_{state,policy}_walk leak if pfkey socket is closed while dumping is on-going. Signed-off-by: Timo Teras Signed-off-by: David S. Miller --- net/key/af_key.c | 30 +++++++++++++++++++----------- 1 file changed, 19 insertions(+), 11 deletions(-) diff --git a/net/key/af_key.c b/net/key/af_key.c index d628df97e02e..b7f5a1c353ee 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -73,22 +73,18 @@ static int pfkey_can_dump(struct sock *sk) return 0; } -static int pfkey_do_dump(struct pfkey_sock *pfk) +static void pfkey_terminate_dump(struct pfkey_sock *pfk) { - int rc; - - rc = pfk->dump.dump(pfk); - if (rc == -ENOBUFS) - return 0; - - pfk->dump.done(pfk); - pfk->dump.dump = NULL; - pfk->dump.done = NULL; - return rc; + if (pfk->dump.dump) { + pfk->dump.done(pfk); + pfk->dump.dump = NULL; + pfk->dump.done = NULL; + } } static void pfkey_sock_destruct(struct sock *sk) { + pfkey_terminate_dump(pfkey_sk(sk)); skb_queue_purge(&sk->sk_receive_queue); if (!sock_flag(sk, SOCK_DEAD)) { @@ -310,6 +306,18 @@ static int pfkey_broadcast(struct sk_buff *skb, gfp_t allocation, return err; } +static int pfkey_do_dump(struct pfkey_sock *pfk) +{ + int rc; + + rc = pfk->dump.dump(pfk); + if (rc == -ENOBUFS) + return 0; + + pfkey_terminate_dump(pfk); + return rc; +} + static inline void pfkey_hdr_dup(struct sadb_msg *new, struct sadb_msg *orig) { *new = *orig;