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authorDenis V. Lunev <den@openvz.org>2008-06-04 15:16:12 -0700
committerDavid S. Miller <davem@davemloft.net>2008-06-04 15:16:12 -0700
commit22dd485022f3d0b162ceb5e67d85de7c3806aa20 (patch)
treeb96ff526ef0e7fe161eecdaa9edf999e3c3a4791
parent199f7d24ae59894243687a234a909f44a8724506 (diff)
raw: Raw socket leak.
The program below just leaks the raw kernel socket int main() { int fd = socket(PF_INET, SOCK_RAW, IPPROTO_UDP); struct sockaddr_in addr; memset(&addr, 0, sizeof(addr)); inet_aton("127.0.0.1", &addr.sin_addr); addr.sin_family = AF_INET; addr.sin_port = htons(2048); sendto(fd, "a", 1, MSG_MORE, &addr, sizeof(addr)); return 0; } Corked packet is allocated via sock_wmalloc which holds the owner socket, so one should uncork it and flush all pending data on close. Do this in the same way as in UDP. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv4/raw.c9
-rw-r--r--net/ipv6/raw.c9
2 files changed, 18 insertions, 0 deletions
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index fead049daf43..e7e091d365ff 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -608,6 +608,14 @@ static void raw_close(struct sock *sk, long timeout)
sk_common_release(sk);
}
+static int raw_destroy(struct sock *sk)
+{
+ lock_sock(sk);
+ ip_flush_pending_frames(sk);
+ release_sock(sk);
+ return 0;
+}
+
/* This gets rid of all the nasties in af_inet. -DaveM */
static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
{
@@ -820,6 +828,7 @@ struct proto raw_prot = {
.name = "RAW",
.owner = THIS_MODULE,
.close = raw_close,
+ .destroy = raw_destroy,
.connect = ip4_datagram_connect,
.disconnect = udp_disconnect,
.ioctl = raw_ioctl,
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 603df76e0522..8fee9a15b2d3 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1164,6 +1164,14 @@ static void rawv6_close(struct sock *sk, long timeout)
sk_common_release(sk);
}
+static int raw6_destroy(struct sock *sk)
+{
+ lock_sock(sk);
+ ip6_flush_pending_frames(sk);
+ release_sock(sk);
+ return 0;
+}
+
static int rawv6_init_sk(struct sock *sk)
{
struct raw6_sock *rp = raw6_sk(sk);
@@ -1187,6 +1195,7 @@ struct proto rawv6_prot = {
.name = "RAWv6",
.owner = THIS_MODULE,
.close = rawv6_close,
+ .destroy = raw6_destroy,
.connect = ip6_datagram_connect,
.disconnect = udp_disconnect,
.ioctl = rawv6_ioctl,

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