* [PATCH net-next v5 1/8] net: Add struct sockaddr_unsized for sockaddr of unknown length
2025-11-04 0:26 [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized Kees Cook
@ 2025-11-04 0:26 ` Kees Cook
2025-11-04 9:15 ` David Laight
2025-11-04 0:26 ` [PATCH net-next v5 2/8] net: Convert proto_ops bind() callbacks to use sockaddr_unsized Kees Cook
` (7 subsequent siblings)
8 siblings, 1 reply; 12+ messages in thread
From: Kees Cook @ 2025-11-04 0:26 UTC (permalink / raw)
To: Paolo Abeni
Cc: Kees Cook, Jakub Kicinski, Gustavo A. R. Silva,
Alexei Starovoitov, Daniel Borkmann, John Fastabend,
David S. Miller, Eric Dumazet, Simon Horman, Kuniyuki Iwashima,
Willem de Bruijn, netdev, linux-kernel, bpf, linux-hardening
Add flexible sockaddr structure to support addresses longer than the
traditional 14-byte struct sockaddr::sa_data limitation without
requiring the full 128-byte sa_data of struct sockaddr_storage. This
allows the network APIs to pass around a pointer to an object that
isn't lying to the compiler about how big it is, but must be accompanied
by its actual size as an additional parameter.
It's possible we may way to migrate to including the size with the
struct in the future, e.g.:
struct sockaddr_unsized {
u16 sa_data_len;
u16 sa_family;
u8 sa_data[] __counted_by(sa_data_len);
};
Signed-off-by: Kees Cook <kees@kernel.org>
---
include/linux/socket.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/include/linux/socket.h b/include/linux/socket.h
index 3b262487ec06..7b1a01be29da 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -40,6 +40,23 @@ struct sockaddr {
};
};
+/**
+ * struct sockaddr_unsized - Unspecified size sockaddr for callbacks
+ * @sa_family: Address family (AF_UNIX, AF_INET, AF_INET6, etc.)
+ * @sa_data: Flexible array for address data
+ *
+ * This structure is designed for callback interfaces where the
+ * total size is known via the sockaddr_len parameter. Unlike struct
+ * sockaddr which has a fixed 14-byte sa_data limit or struct
+ * sockaddr_storage which has a fixed 128-byte sa_data limit, this
+ * structure can accommodate addresses of any size, but must be used
+ * carefully.
+ */
+struct sockaddr_unsized {
+ __kernel_sa_family_t sa_family; /* address family, AF_xxx */
+ char sa_data[]; /* flexible address data */
+};
+
struct linger {
int l_onoff; /* Linger active */
int l_linger; /* How long to linger for */
--
2.34.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* Re: [PATCH net-next v5 1/8] net: Add struct sockaddr_unsized for sockaddr of unknown length
2025-11-04 0:26 ` [PATCH net-next v5 1/8] net: Add struct sockaddr_unsized for sockaddr of unknown length Kees Cook
@ 2025-11-04 9:15 ` David Laight
2025-11-04 16:59 ` Kees Cook
0 siblings, 1 reply; 12+ messages in thread
From: David Laight @ 2025-11-04 9:15 UTC (permalink / raw)
To: Kees Cook
Cc: Paolo Abeni, Jakub Kicinski, Gustavo A. R. Silva,
Alexei Starovoitov, Daniel Borkmann, John Fastabend,
David S. Miller, Eric Dumazet, Simon Horman, Kuniyuki Iwashima,
Willem de Bruijn, netdev, linux-kernel, bpf, linux-hardening
On Mon, 3 Nov 2025 16:26:09 -0800
Kees Cook <kees@kernel.org> wrote:
> Add flexible sockaddr structure to support addresses longer than the
> traditional 14-byte struct sockaddr::sa_data limitation without
> requiring the full 128-byte sa_data of struct sockaddr_storage. This
> allows the network APIs to pass around a pointer to an object that
> isn't lying to the compiler about how big it is, but must be accompanied
> by its actual size as an additional parameter.
>
> It's possible we may way to migrate to including the size with the
> struct in the future, e.g.:
>
> struct sockaddr_unsized {
> u16 sa_data_len;
> u16 sa_family;
> u8 sa_data[] __counted_by(sa_data_len);
> };
I'm not sure having that example helps.
At a quick glance it might be thought of as part of the change.
That particular example also has all sorts of issues, so any such
change would have to be very different.
David
>
> Signed-off-by: Kees Cook <kees@kernel.org>
> ---
> include/linux/socket.h | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/include/linux/socket.h b/include/linux/socket.h
> index 3b262487ec06..7b1a01be29da 100644
> --- a/include/linux/socket.h
> +++ b/include/linux/socket.h
> @@ -40,6 +40,23 @@ struct sockaddr {
> };
> };
>
> +/**
> + * struct sockaddr_unsized - Unspecified size sockaddr for callbacks
> + * @sa_family: Address family (AF_UNIX, AF_INET, AF_INET6, etc.)
> + * @sa_data: Flexible array for address data
> + *
> + * This structure is designed for callback interfaces where the
> + * total size is known via the sockaddr_len parameter. Unlike struct
> + * sockaddr which has a fixed 14-byte sa_data limit or struct
> + * sockaddr_storage which has a fixed 128-byte sa_data limit, this
> + * structure can accommodate addresses of any size, but must be used
> + * carefully.
> + */
> +struct sockaddr_unsized {
> + __kernel_sa_family_t sa_family; /* address family, AF_xxx */
> + char sa_data[]; /* flexible address data */
> +};
> +
> struct linger {
> int l_onoff; /* Linger active */
> int l_linger; /* How long to linger for */
^ permalink raw reply [flat|nested] 12+ messages in thread* Re: [PATCH net-next v5 1/8] net: Add struct sockaddr_unsized for sockaddr of unknown length
2025-11-04 9:15 ` David Laight
@ 2025-11-04 16:59 ` Kees Cook
0 siblings, 0 replies; 12+ messages in thread
From: Kees Cook @ 2025-11-04 16:59 UTC (permalink / raw)
To: David Laight
Cc: Paolo Abeni, Jakub Kicinski, Gustavo A. R. Silva,
Alexei Starovoitov, Daniel Borkmann, John Fastabend,
David S. Miller, Eric Dumazet, Simon Horman, Kuniyuki Iwashima,
Willem de Bruijn, netdev, linux-kernel, bpf, linux-hardening
On Tue, Nov 04, 2025 at 09:15:36AM +0000, David Laight wrote:
> On Mon, 3 Nov 2025 16:26:09 -0800
> Kees Cook <kees@kernel.org> wrote:
>
> > Add flexible sockaddr structure to support addresses longer than the
> > traditional 14-byte struct sockaddr::sa_data limitation without
> > requiring the full 128-byte sa_data of struct sockaddr_storage. This
> > allows the network APIs to pass around a pointer to an object that
> > isn't lying to the compiler about how big it is, but must be accompanied
> > by its actual size as an additional parameter.
> >
> > It's possible we may way to migrate to including the size with the
> > struct in the future, e.g.:
> >
> > struct sockaddr_unsized {
> > u16 sa_data_len;
> > u16 sa_family;
> > u8 sa_data[] __counted_by(sa_data_len);
> > };
>
> I'm not sure having that example helps.
> At a quick glance it might be thought of as part of the change.
> That particular example also has all sorts of issues, so any such
> change would have to be very different.
That's fine, we can drop the example and the sentence introducing it. If
a v6 is desired, let me know.
--
Kees Cook
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH net-next v5 2/8] net: Convert proto_ops bind() callbacks to use sockaddr_unsized
2025-11-04 0:26 [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized Kees Cook
2025-11-04 0:26 ` [PATCH net-next v5 1/8] net: Add struct sockaddr_unsized for sockaddr of unknown length Kees Cook
@ 2025-11-04 0:26 ` Kees Cook
2025-11-04 0:26 ` [PATCH net-next v5 3/8] net: Convert proto_ops connect() " Kees Cook
` (6 subsequent siblings)
8 siblings, 0 replies; 12+ messages in thread
From: Kees Cook @ 2025-11-04 0:26 UTC (permalink / raw)
To: Paolo Abeni
Cc: Kees Cook, Jakub Kicinski, Gustavo A. R. Silva,
Alexei Starovoitov, Daniel Borkmann, John Fastabend,
David S. Miller, Eric Dumazet, Simon Horman, Kuniyuki Iwashima,
Willem de Bruijn, netdev, linux-kernel, bpf, linux-hardening
Update all struct proto_ops bind() callback function prototypes from
"struct sockaddr *" to "struct sockaddr_unsized *" to avoid lying to the
compiler about object sizes. Calls into struct proto handlers gain casts
that will be removed in the struct proto conversion patch.
No binary changes expected.
Signed-off-by: Kees Cook <kees@kernel.org>
---
include/linux/net.h | 4 ++--
include/net/inet_common.h | 2 +-
include/net/ipv6.h | 2 +-
include/net/sock.h | 2 +-
net/rds/rds.h | 2 +-
net/smc/smc.h | 2 +-
crypto/af_alg.c | 2 +-
drivers/block/drbd/drbd_receiver.c | 4 ++--
drivers/infiniband/hw/erdma/erdma_cm.c | 4 ++--
drivers/infiniband/sw/siw/siw_cm.c | 6 +++---
drivers/isdn/mISDN/l1oip_core.c | 2 +-
drivers/isdn/mISDN/socket.c | 4 ++--
drivers/net/ppp/pptp.c | 4 ++--
drivers/nvme/host/tcp.c | 2 +-
drivers/nvme/target/tcp.c | 2 +-
drivers/target/iscsi/iscsi_target_login.c | 2 +-
drivers/xen/pvcalls-back.c | 2 +-
fs/afs/rxrpc.c | 6 +++---
fs/dlm/lowcomms.c | 6 +++---
fs/ocfs2/cluster/tcp.c | 4 ++--
fs/smb/client/connect.c | 2 +-
fs/smb/server/transport_tcp.c | 4 ++--
net/9p/trans_fd.c | 2 +-
net/appletalk/ddp.c | 2 +-
net/atm/pvc.c | 4 ++--
net/atm/svc.c | 2 +-
net/ax25/af_ax25.c | 2 +-
net/bluetooth/hci_sock.c | 2 +-
net/bluetooth/iso.c | 4 ++--
net/bluetooth/l2cap_sock.c | 2 +-
net/bluetooth/rfcomm/core.c | 4 ++--
net/bluetooth/rfcomm/sock.c | 2 +-
net/bluetooth/sco.c | 2 +-
net/can/isotp.c | 2 +-
net/can/j1939/socket.c | 2 +-
net/can/raw.c | 2 +-
net/core/sock.c | 2 +-
net/ieee802154/socket.c | 4 ++--
net/ipv4/af_inet.c | 4 ++--
net/ipv4/udp_tunnel_core.c | 2 +-
net/ipv6/af_inet6.c | 4 ++--
net/ipv6/ip6_udp_tunnel.c | 2 +-
net/iucv/af_iucv.c | 2 +-
net/l2tp/l2tp_core.c | 4 ++--
net/llc/af_llc.c | 2 +-
net/mctp/af_mctp.c | 2 +-
net/mctp/test/route-test.c | 2 +-
net/mptcp/protocol.c | 6 +++---
net/mptcp/subflow.c | 2 +-
net/netfilter/ipvs/ip_vs_sync.c | 4 ++--
net/netlink/af_netlink.c | 2 +-
net/netrom/af_netrom.c | 2 +-
net/nfc/llcp_sock.c | 4 ++--
net/packet/af_packet.c | 11 ++++++-----
net/phonet/socket.c | 8 ++++----
net/qrtr/af_qrtr.c | 2 +-
net/qrtr/ns.c | 2 +-
net/rds/bind.c | 2 +-
net/rds/tcp_connect.c | 2 +-
net/rds/tcp_listen.c | 2 +-
net/rose/af_rose.c | 2 +-
net/rxrpc/af_rxrpc.c | 2 +-
net/rxrpc/rxperf.c | 2 +-
net/smc/af_smc.c | 2 +-
net/socket.c | 6 +++---
net/sunrpc/clnt.c | 4 ++--
net/sunrpc/svcsock.c | 2 +-
net/sunrpc/xprtsock.c | 4 ++--
net/tipc/socket.c | 4 ++--
net/unix/af_unix.c | 4 ++--
net/vmw_vsock/af_vsock.c | 4 ++--
net/x25/af_x25.c | 2 +-
net/xdp/xsk.c | 2 +-
tools/testing/selftests/bpf/test_kmods/bpf_testmod.c | 2 +-
74 files changed, 113 insertions(+), 112 deletions(-)
diff --git a/include/linux/net.h b/include/linux/net.h
index ec09620f40f7..0e316f063113 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -163,7 +163,7 @@ struct proto_ops {
struct module *owner;
int (*release) (struct socket *sock);
int (*bind) (struct socket *sock,
- struct sockaddr *myaddr,
+ struct sockaddr_unsized *myaddr,
int sockaddr_len);
int (*connect) (struct socket *sock,
struct sockaddr *vaddr,
@@ -345,7 +345,7 @@ int kernel_sendmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec,
int kernel_recvmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec,
size_t num, size_t len, int flags);
-int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen);
+int kernel_bind(struct socket *sock, struct sockaddr_unsized *addr, int addrlen);
int kernel_listen(struct socket *sock, int backlog);
int kernel_accept(struct socket *sock, struct socket **newsock, int flags);
int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen,
diff --git a/include/net/inet_common.h b/include/net/inet_common.h
index c17a6585d0b0..1666cf6f539e 100644
--- a/include/net/inet_common.h
+++ b/include/net/inet_common.h
@@ -42,7 +42,7 @@ int inet_shutdown(struct socket *sock, int how);
int inet_listen(struct socket *sock, int backlog);
int __inet_listen_sk(struct sock *sk, int backlog);
void inet_sock_destruct(struct sock *sk);
-int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len);
+int inet_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len);
int inet_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len);
/* Don't allocate port at this moment, defer to connect. */
#define BIND_FORCE_ADDRESS_NO_PORT (1 << 0)
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 2ccdf85f34f1..2188bad9a687 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -1208,7 +1208,7 @@ void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu);
void inet6_cleanup_sock(struct sock *sk);
void inet6_sock_destruct(struct sock *sk);
int inet6_release(struct socket *sock);
-int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len);
+int inet6_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len);
int inet6_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len);
int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
int peer);
diff --git a/include/net/sock.h b/include/net/sock.h
index 384a97248dc9..beee4b8d80d3 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1920,7 +1920,7 @@ int sock_cmsg_send(struct sock *sk, struct msghdr *msg,
* Functions to fill in entries in struct proto_ops when a protocol
* does not implement a particular function.
*/
-int sock_no_bind(struct socket *, struct sockaddr *, int);
+int sock_no_bind(struct socket *sock, struct sockaddr_unsized *saddr, int len);
int sock_no_connect(struct socket *, struct sockaddr *, int, int);
int sock_no_socketpair(struct socket *, struct socket *);
int sock_no_accept(struct socket *, struct socket *, struct proto_accept_arg *);
diff --git a/net/rds/rds.h b/net/rds/rds.h
index 5b1c072e2e7f..a029e5fcdea7 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -735,7 +735,7 @@ extern wait_queue_head_t rds_poll_waitq;
/* bind.c */
-int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len);
+int rds_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len);
void rds_remove_bound(struct rds_sock *rs);
struct rds_sock *rds_find_bound(const struct in6_addr *addr, __be16 port,
__u32 scope_id);
diff --git a/net/smc/smc.h b/net/smc/smc.h
index 2c9084963739..a008dbe6d6f6 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -42,7 +42,7 @@ void smc_unhash_sk(struct sock *sk);
void smc_release_cb(struct sock *sk);
int smc_release(struct socket *sock);
-int smc_bind(struct socket *sock, struct sockaddr *uaddr,
+int smc_bind(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len);
int smc_connect(struct socket *sock, struct sockaddr *addr,
int alen, int flags);
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 6c271e55f44d..e468714f539d 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -145,7 +145,7 @@ void af_alg_release_parent(struct sock *sk)
}
EXPORT_SYMBOL_GPL(af_alg_release_parent);
-static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+static int alg_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
const u32 allowed = CRYPTO_ALG_KERN_DRIVER_ONLY;
struct sock *sk = sock->sk;
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index caaf2781136d..d9296f74f902 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -450,7 +450,7 @@ static struct socket *drbd_try_connect(struct drbd_connection *connection)
* a free one dynamically.
*/
what = "bind before connect";
- err = sock->ops->bind(sock, (struct sockaddr *) &src_in6, my_addr_len);
+ err = sock->ops->bind(sock, (struct sockaddr_unsized *) &src_in6, my_addr_len);
if (err < 0)
goto out;
@@ -537,7 +537,7 @@ static int prepare_listen_socket(struct drbd_connection *connection, struct acce
drbd_setbufsize(s_listen, sndbuf_size, rcvbuf_size);
what = "bind before listen";
- err = s_listen->ops->bind(s_listen, (struct sockaddr *)&my_addr, my_addr_len);
+ err = s_listen->ops->bind(s_listen, (struct sockaddr_unsized *)&my_addr, my_addr_len);
if (err < 0)
goto out;
diff --git a/drivers/infiniband/hw/erdma/erdma_cm.c b/drivers/infiniband/hw/erdma/erdma_cm.c
index e0acc185e719..ef66a6359eb9 100644
--- a/drivers/infiniband/hw/erdma/erdma_cm.c
+++ b/drivers/infiniband/hw/erdma/erdma_cm.c
@@ -993,7 +993,7 @@ static int kernel_bindconnect(struct socket *s, struct sockaddr *laddr,
int ret;
sock_set_reuseaddr(s->sk);
- ret = s->ops->bind(s, laddr, laddrlen);
+ ret = s->ops->bind(s, (struct sockaddr_unsized *)laddr, laddrlen);
if (ret)
return ret;
ret = s->ops->connect(s, raddr, raddrlen, flags);
@@ -1315,7 +1315,7 @@ int erdma_create_listen(struct iw_cm_id *id, int backlog)
if (ipv4_is_zeronet(laddr->sin_addr.s_addr))
s->sk->sk_bound_dev_if = dev->netdev->ifindex;
- ret = s->ops->bind(s, (struct sockaddr *)laddr,
+ ret = s->ops->bind(s, (struct sockaddr_unsized *)laddr,
sizeof(struct sockaddr_in));
if (ret)
goto error;
diff --git a/drivers/infiniband/sw/siw/siw_cm.c b/drivers/infiniband/sw/siw/siw_cm.c
index 708b13993fdf..7fe118cacb3f 100644
--- a/drivers/infiniband/sw/siw/siw_cm.c
+++ b/drivers/infiniband/sw/siw/siw_cm.c
@@ -1340,7 +1340,7 @@ static int kernel_bindconnect(struct socket *s, struct sockaddr *laddr,
return rv;
}
- rv = s->ops->bind(s, laddr, size);
+ rv = s->ops->bind(s, (struct sockaddr_unsized *)laddr, size);
if (rv < 0)
return rv;
@@ -1789,7 +1789,7 @@ int siw_create_listen(struct iw_cm_id *id, int backlog)
goto error;
}
}
- rv = s->ops->bind(s, (struct sockaddr *)laddr,
+ rv = s->ops->bind(s, (struct sockaddr_unsized *)laddr,
sizeof(struct sockaddr_in));
} else {
struct sockaddr_in6 *laddr = &to_sockaddr_in6(id->local_addr);
@@ -1813,7 +1813,7 @@ int siw_create_listen(struct iw_cm_id *id, int backlog)
goto error;
}
}
- rv = s->ops->bind(s, (struct sockaddr *)laddr,
+ rv = s->ops->bind(s, (struct sockaddr_unsized *)laddr,
sizeof(struct sockaddr_in6));
}
if (rv) {
diff --git a/drivers/isdn/mISDN/l1oip_core.c b/drivers/isdn/mISDN/l1oip_core.c
index f732f6614d37..6ab036e4a35f 100644
--- a/drivers/isdn/mISDN/l1oip_core.c
+++ b/drivers/isdn/mISDN/l1oip_core.c
@@ -676,7 +676,7 @@ l1oip_socket_thread(void *data)
hc->sin_remote.sin_port = htons((unsigned short)hc->remoteport);
/* bind to incoming port */
- if (socket->ops->bind(socket, (struct sockaddr *)&hc->sin_local,
+ if (socket->ops->bind(socket, (struct sockaddr_unsized *)&hc->sin_local,
sizeof(hc->sin_local))) {
printk(KERN_ERR "%s: Failed to bind socket to port %d.\n",
__func__, hc->localport);
diff --git a/drivers/isdn/mISDN/socket.c b/drivers/isdn/mISDN/socket.c
index b215b28cad7b..77b900db1cac 100644
--- a/drivers/isdn/mISDN/socket.c
+++ b/drivers/isdn/mISDN/socket.c
@@ -462,7 +462,7 @@ static int data_sock_getsockopt(struct socket *sock, int level, int optname,
}
static int
-data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
+data_sock_bind(struct socket *sock, struct sockaddr_unsized *addr, int addr_len)
{
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
struct sock *sk = sock->sk;
@@ -696,7 +696,7 @@ base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
}
static int
-base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
+base_sock_bind(struct socket *sock, struct sockaddr_unsized *addr, int addr_len)
{
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
struct sock *sk = sock->sk;
diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
index 90737cb71892..d07e87a0974c 100644
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c
@@ -382,8 +382,8 @@ static int pptp_rcv(struct sk_buff *skb)
return NET_RX_DROP;
}
-static int pptp_bind(struct socket *sock, struct sockaddr *uservaddr,
- int sockaddr_len)
+static int pptp_bind(struct socket *sock, struct sockaddr_unsized *uservaddr,
+ int sockaddr_len)
{
struct sock *sk = sock->sk;
struct sockaddr_pppox *sp = (struct sockaddr_pppox *) uservaddr;
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 9a96df1a511c..35d0bd91f6fd 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -1834,7 +1834,7 @@ static int nvme_tcp_alloc_queue(struct nvme_ctrl *nctrl, int qid,
sk_set_memalloc(queue->sock->sk);
if (nctrl->opts->mask & NVMF_OPT_HOST_TRADDR) {
- ret = kernel_bind(queue->sock, (struct sockaddr *)&ctrl->src_addr,
+ ret = kernel_bind(queue->sock, (struct sockaddr_unsized *)&ctrl->src_addr,
sizeof(ctrl->src_addr));
if (ret) {
dev_err(nctrl->device,
diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
index 470bf37e5a63..d543da09ef8e 100644
--- a/drivers/nvme/target/tcp.c
+++ b/drivers/nvme/target/tcp.c
@@ -2055,7 +2055,7 @@ static int nvmet_tcp_add_port(struct nvmet_port *nport)
if (so_priority > 0)
sock_set_priority(port->sock->sk, so_priority);
- ret = kernel_bind(port->sock, (struct sockaddr *)&port->addr,
+ ret = kernel_bind(port->sock, (struct sockaddr_unsized *)&port->addr,
sizeof(port->addr));
if (ret) {
pr_err("failed to bind port socket %d\n", ret);
diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c
index c2ac9a99ebbb..53aca059dc16 100644
--- a/drivers/target/iscsi/iscsi_target_login.c
+++ b/drivers/target/iscsi/iscsi_target_login.c
@@ -822,7 +822,7 @@ int iscsit_setup_np(
sock_set_reuseaddr(sock->sk);
ip_sock_set_freebind(sock->sk);
- ret = kernel_bind(sock, (struct sockaddr *)&np->np_sockaddr, len);
+ ret = kernel_bind(sock, (struct sockaddr_unsized *)&np->np_sockaddr, len);
if (ret < 0) {
pr_err("kernel_bind() failed: %d\n", ret);
goto fail;
diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c
index fd7ed65e0197..da1b516b9cfd 100644
--- a/drivers/xen/pvcalls-back.c
+++ b/drivers/xen/pvcalls-back.c
@@ -650,7 +650,7 @@ static int pvcalls_back_bind(struct xenbus_device *dev,
if (ret < 0)
goto out;
- ret = inet_bind(map->sock, (struct sockaddr *)&req->u.bind.addr,
+ ret = inet_bind(map->sock, (struct sockaddr_unsized *)&req->u.bind.addr,
req->u.bind.len);
if (ret < 0)
goto out;
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index c1cadf8fb346..bf0e4ea0aafd 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -82,16 +82,16 @@ int afs_open_socket(struct afs_net *net)
if (ret < 0)
pr_err("Couldn't create RxGK CM key: %d\n", ret);
- ret = kernel_bind(socket, (struct sockaddr *) &srx, sizeof(srx));
+ ret = kernel_bind(socket, (struct sockaddr_unsized *) &srx, sizeof(srx));
if (ret == -EADDRINUSE) {
srx.transport.sin6.sin6_port = 0;
- ret = kernel_bind(socket, (struct sockaddr *) &srx, sizeof(srx));
+ ret = kernel_bind(socket, (struct sockaddr_unsized *) &srx, sizeof(srx));
}
if (ret < 0)
goto error_2;
srx.srx_service = YFS_CM_SERVICE;
- ret = kernel_bind(socket, (struct sockaddr *) &srx, sizeof(srx));
+ ret = kernel_bind(socket, (struct sockaddr_unsized *) &srx, sizeof(srx));
if (ret < 0)
goto error_2;
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 9a0b6c2b6b01..0500421b6e3b 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -1134,7 +1134,7 @@ static int sctp_bind_addrs(struct socket *sock, __be16 port)
make_sockaddr(&localaddr, port, &addr_len);
if (!i)
- result = kernel_bind(sock, addr, addr_len);
+ result = kernel_bind(sock, (struct sockaddr_unsized *)addr, addr_len);
else
result = sock_bind_add(sock->sk, addr, addr_len);
@@ -1813,7 +1813,7 @@ static int dlm_tcp_bind(struct socket *sock)
memcpy(&src_addr, &dlm_local_addr[0], sizeof(src_addr));
make_sockaddr(&src_addr, 0, &addr_len);
- result = kernel_bind(sock, (struct sockaddr *)&src_addr,
+ result = kernel_bind(sock, (struct sockaddr_unsized *)&src_addr,
addr_len);
if (result < 0) {
/* This *may* not indicate a critical error */
@@ -1852,7 +1852,7 @@ static int dlm_tcp_listen_bind(struct socket *sock)
/* Bind to our port */
make_sockaddr(&dlm_local_addr[0], dlm_config.ci_tcp_port, &addr_len);
- return kernel_bind(sock, (struct sockaddr *)&dlm_local_addr[0],
+ return kernel_bind(sock, (struct sockaddr_unsized *)&dlm_local_addr[0],
addr_len);
}
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index b05d4e9d13b2..c7734193d8d7 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -1615,7 +1615,7 @@ static void o2net_start_connect(struct work_struct *work)
myaddr.sin_addr.s_addr = mynode->nd_ipv4_address;
myaddr.sin_port = htons(0); /* any port */
- ret = sock->ops->bind(sock, (struct sockaddr *)&myaddr,
+ ret = sock->ops->bind(sock, (struct sockaddr_unsized *)&myaddr,
sizeof(myaddr));
if (ret) {
mlog(ML_ERROR, "bind failed with %d at address %pI4\n",
@@ -2002,7 +2002,7 @@ static int o2net_open_listening_sock(__be32 addr, __be16 port)
INIT_WORK(&o2net_listen_work, o2net_accept_many);
sock->sk->sk_reuse = SK_CAN_REUSE;
- ret = sock->ops->bind(sock, (struct sockaddr *)&sin, sizeof(sin));
+ ret = sock->ops->bind(sock, (struct sockaddr_unsized *)&sin, sizeof(sin));
if (ret < 0) {
printk(KERN_ERR "o2net: Error %d while binding socket at "
"%pI4:%u\n", ret, &addr, ntohs(port));
diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c
index 55cb4b0cbd48..5c535026e5e7 100644
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -3104,7 +3104,7 @@ bind_socket(struct TCP_Server_Info *server)
struct socket *socket = server->ssocket;
rc = kernel_bind(socket,
- (struct sockaddr *) &server->srcaddr,
+ (struct sockaddr_unsized *) &server->srcaddr,
sizeof(server->srcaddr));
if (rc < 0) {
struct sockaddr_in *saddr4;
diff --git a/fs/smb/server/transport_tcp.c b/fs/smb/server/transport_tcp.c
index 7a1e3dcc2cde..bf694bc78c65 100644
--- a/fs/smb/server/transport_tcp.c
+++ b/fs/smb/server/transport_tcp.c
@@ -519,10 +519,10 @@ static int create_socket(struct interface *iface)
}
if (ipv4)
- ret = kernel_bind(ksmbd_socket, (struct sockaddr *)&sin,
+ ret = kernel_bind(ksmbd_socket, (struct sockaddr_unsized *)&sin,
sizeof(sin));
else
- ret = kernel_bind(ksmbd_socket, (struct sockaddr *)&sin6,
+ ret = kernel_bind(ksmbd_socket, (struct sockaddr_unsized *)&sin6,
sizeof(sin6));
if (ret) {
pr_err("Failed to bind socket: %d\n", ret);
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index a516745f732f..ef517bb307e2 100644
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -966,7 +966,7 @@ static int p9_bind_privport(struct socket *sock)
((struct sockaddr_in *)&stor)->sin_port = htons((ushort)port);
else
((struct sockaddr_in6 *)&stor)->sin6_port = htons((ushort)port);
- err = kernel_bind(sock, (struct sockaddr *)&stor, sizeof(stor));
+ err = kernel_bind(sock, (struct sockaddr_unsized *)&stor, sizeof(stor));
if (err != -EADDRINUSE)
break;
}
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 30242fe10341..45db43cde67f 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1149,7 +1149,7 @@ static int atalk_autobind(struct sock *sk)
}
/* Set the address 'our end' of the connection */
-static int atalk_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+static int atalk_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct sockaddr_at *addr = (struct sockaddr_at *)uaddr;
struct sock *sk = sock->sk;
diff --git a/net/atm/pvc.c b/net/atm/pvc.c
index 66d9a9bd5896..62fdf07c53de 100644
--- a/net/atm/pvc.c
+++ b/net/atm/pvc.c
@@ -24,7 +24,7 @@ static int pvc_shutdown(struct socket *sock, int how)
return 0;
}
-static int pvc_bind(struct socket *sock, struct sockaddr *sockaddr,
+static int pvc_bind(struct socket *sock, struct sockaddr_unsized *sockaddr,
int sockaddr_len)
{
struct sock *sk = sock->sk;
@@ -59,7 +59,7 @@ static int pvc_bind(struct socket *sock, struct sockaddr *sockaddr,
static int pvc_connect(struct socket *sock, struct sockaddr *sockaddr,
int sockaddr_len, int flags)
{
- return pvc_bind(sock, sockaddr, sockaddr_len);
+ return pvc_bind(sock, (struct sockaddr_unsized *)sockaddr, sockaddr_len);
}
static int pvc_setsockopt(struct socket *sock, int level, int optname,
diff --git a/net/atm/svc.c b/net/atm/svc.c
index f8137ae693b0..1906a493c8aa 100644
--- a/net/atm/svc.c
+++ b/net/atm/svc.c
@@ -97,7 +97,7 @@ static int svc_release(struct socket *sock)
return 0;
}
-static int svc_bind(struct socket *sock, struct sockaddr *sockaddr,
+static int svc_bind(struct socket *sock, struct sockaddr_unsized *sockaddr,
int sockaddr_len)
{
DEFINE_WAIT(wait);
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 6ef8b2a57a9b..23c558ff9682 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1094,7 +1094,7 @@ static int ax25_release(struct socket *sock)
* that we've implemented support for SO_BINDTODEVICE. It is however small
* and trivially backward compatible.
*/
-static int ax25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+static int ax25_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
struct full_sockaddr_ax25 *addr = (struct full_sockaddr_ax25 *)uaddr;
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index fc866759910d..ba9f48771e11 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -1185,7 +1185,7 @@ static int hci_sock_compat_ioctl(struct socket *sock, unsigned int cmd,
}
#endif
-static int hci_sock_bind(struct socket *sock, struct sockaddr *addr,
+static int hci_sock_bind(struct socket *sock, struct sockaddr_unsized *addr,
int addr_len)
{
struct sockaddr_hci haddr;
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index 74ec7d125c88..28c3dc4449e3 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -962,7 +962,7 @@ static int iso_sock_create(struct net *net, struct socket *sock, int protocol,
return 0;
}
-static int iso_sock_bind_bc(struct socket *sock, struct sockaddr *addr,
+static int iso_sock_bind_bc(struct socket *sock, struct sockaddr_unsized *addr,
int addr_len)
{
struct sockaddr_iso *sa = (struct sockaddr_iso *)addr;
@@ -1105,7 +1105,7 @@ static int iso_sock_rebind_bc(struct sock *sk, struct sockaddr_iso *sa,
return err;
}
-static int iso_sock_bind(struct socket *sock, struct sockaddr *addr,
+static int iso_sock_bind(struct socket *sock, struct sockaddr_unsized *addr,
int addr_len)
{
struct sockaddr_iso *sa = (struct sockaddr_iso *)addr;
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 814fb8610ac4..ca7394d8fa4e 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -80,7 +80,7 @@ static int l2cap_validate_le_psm(u16 psm)
return 0;
}
-static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
+static int l2cap_sock_bind(struct socket *sock, struct sockaddr_unsized *addr, int alen)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 96250807b32b..d62fd6c57617 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -781,7 +781,7 @@ static struct rfcomm_session *rfcomm_session_create(bdaddr_t *src,
addr.l2_psm = 0;
addr.l2_cid = 0;
addr.l2_bdaddr_type = BDADDR_BREDR;
- *err = kernel_bind(sock, (struct sockaddr *) &addr, sizeof(addr));
+ *err = kernel_bind(sock, (struct sockaddr_unsized *)&addr, sizeof(addr));
if (*err < 0)
goto failed;
@@ -2068,7 +2068,7 @@ static int rfcomm_add_listener(bdaddr_t *ba)
addr.l2_psm = cpu_to_le16(L2CAP_PSM_RFCOMM);
addr.l2_cid = 0;
addr.l2_bdaddr_type = BDADDR_BREDR;
- err = kernel_bind(sock, (struct sockaddr *) &addr, sizeof(addr));
+ err = kernel_bind(sock, (struct sockaddr_unsized *)&addr, sizeof(addr));
if (err < 0) {
BT_ERR("Bind failed %d", err);
goto failed;
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 913402806fa0..8c8762bbc6de 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -324,7 +324,7 @@ static int rfcomm_sock_create(struct net *net, struct socket *sock,
return 0;
}
-static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
+static int rfcomm_sock_bind(struct socket *sock, struct sockaddr_unsized *addr, int addr_len)
{
struct sockaddr_rc sa;
struct sock *sk = sock->sk;
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index ab0cf442d57b..01d878205e58 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -605,7 +605,7 @@ static int sco_sock_create(struct net *net, struct socket *sock, int protocol,
return 0;
}
-static int sco_sock_bind(struct socket *sock, struct sockaddr *addr,
+static int sco_sock_bind(struct socket *sock, struct sockaddr_unsized *addr,
int addr_len)
{
struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
diff --git a/net/can/isotp.c b/net/can/isotp.c
index 74ee1e52249b..ce588b85665a 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -1246,7 +1246,7 @@ static int isotp_release(struct socket *sock)
return 0;
}
-static int isotp_bind(struct socket *sock, struct sockaddr *uaddr, int len)
+static int isotp_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int len)
{
struct sockaddr_can *addr = (struct sockaddr_can *)uaddr;
struct sock *sk = sock->sk;
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index 88e7160d4248..a2abedc757d0 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -440,7 +440,7 @@ static int j1939_sk_sanity_check(struct sockaddr_can *addr, int len)
return 0;
}
-static int j1939_sk_bind(struct socket *sock, struct sockaddr *uaddr, int len)
+static int j1939_sk_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int len)
{
struct sockaddr_can *addr = (struct sockaddr_can *)uaddr;
struct j1939_sock *jsk = j1939_sk(sock->sk);
diff --git a/net/can/raw.c b/net/can/raw.c
index a53853f5e9af..f36a83d3447c 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -449,7 +449,7 @@ static int raw_release(struct socket *sock)
return 0;
}
-static int raw_bind(struct socket *sock, struct sockaddr *uaddr, int len)
+static int raw_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int len)
{
struct sockaddr_can *addr = (struct sockaddr_can *)uaddr;
struct sock *sk = sock->sk;
diff --git a/net/core/sock.c b/net/core/sock.c
index 7a9bbc2afcf0..1e1ce18bba16 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -3462,7 +3462,7 @@ EXPORT_SYMBOL_GPL(sk_set_peek_off);
* function, some default processing is provided.
*/
-int sock_no_bind(struct socket *sock, struct sockaddr *saddr, int len)
+int sock_no_bind(struct socket *sock, struct sockaddr_unsized *saddr, int len)
{
return -EOPNOTSUPP;
}
diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index 18d267921bb5..99ddfad9bb88 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -96,13 +96,13 @@ static int ieee802154_sock_sendmsg(struct socket *sock, struct msghdr *msg,
return sk->sk_prot->sendmsg(sk, msg, len);
}
-static int ieee802154_sock_bind(struct socket *sock, struct sockaddr *uaddr,
+static int ieee802154_sock_bind(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len)
{
struct sock *sk = sock->sk;
if (sk->sk_prot->bind)
- return sk->sk_prot->bind(sk, uaddr, addr_len);
+ return sk->sk_prot->bind(sk, (struct sockaddr *)uaddr, addr_len);
return sock_no_bind(sock, uaddr, addr_len);
}
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 0784e2a873a1..aa43d16e48ff 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -464,9 +464,9 @@ int inet_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return __inet_bind(sk, uaddr, addr_len, flags);
}
-int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+int inet_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
- return inet_bind_sk(sock->sk, uaddr, addr_len);
+ return inet_bind_sk(sock->sk, (struct sockaddr *)uaddr, addr_len);
}
EXPORT_SYMBOL(inet_bind);
diff --git a/net/ipv4/udp_tunnel_core.c b/net/ipv4/udp_tunnel_core.c
index 54386e06a813..11e5a88c923d 100644
--- a/net/ipv4/udp_tunnel_core.c
+++ b/net/ipv4/udp_tunnel_core.c
@@ -29,7 +29,7 @@ int udp_sock_create4(struct net *net, struct udp_port_cfg *cfg,
udp_addr.sin_family = AF_INET;
udp_addr.sin_addr = cfg->local_ip;
udp_addr.sin_port = cfg->local_udp_port;
- err = kernel_bind(sock, (struct sockaddr *)&udp_addr,
+ err = kernel_bind(sock, (struct sockaddr_unsized *)&udp_addr,
sizeof(udp_addr));
if (err < 0)
goto error;
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 44d7de1eec4f..c92d27e35fbc 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -465,9 +465,9 @@ int inet6_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len)
}
/* bind for INET6 API */
-int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+int inet6_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
- return inet6_bind_sk(sock->sk, uaddr, addr_len);
+ return inet6_bind_sk(sock->sk, (struct sockaddr *)uaddr, addr_len);
}
EXPORT_SYMBOL(inet6_bind);
diff --git a/net/ipv6/ip6_udp_tunnel.c b/net/ipv6/ip6_udp_tunnel.c
index 0ff547a4bff7..b0d9286b33c8 100644
--- a/net/ipv6/ip6_udp_tunnel.c
+++ b/net/ipv6/ip6_udp_tunnel.c
@@ -40,7 +40,7 @@ int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
memcpy(&udp6_addr.sin6_addr, &cfg->local_ip6,
sizeof(udp6_addr.sin6_addr));
udp6_addr.sin6_port = cfg->local_udp_port;
- err = kernel_bind(sock, (struct sockaddr *)&udp6_addr,
+ err = kernel_bind(sock, (struct sockaddr_unsized *)&udp6_addr,
sizeof(udp6_addr));
if (err < 0)
goto error;
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index 4ddfc633d30c..3941e32cda69 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -563,7 +563,7 @@ static void __iucv_auto_name(struct iucv_sock *iucv)
}
/* Bind an unbound socket */
-static int iucv_sock_bind(struct socket *sock, struct sockaddr *addr,
+static int iucv_sock_bind(struct socket *sock, struct sockaddr_unsized *addr,
int addr_len)
{
DECLARE_SOCKADDR(struct sockaddr_iucv *, sa, addr);
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 369a2f2e459c..4b5e372a5cd4 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1503,7 +1503,7 @@ static int l2tp_tunnel_sock_create(struct net *net,
memcpy(&ip6_addr.l2tp_addr, cfg->local_ip6,
sizeof(ip6_addr.l2tp_addr));
ip6_addr.l2tp_conn_id = tunnel_id;
- err = kernel_bind(sock, (struct sockaddr *)&ip6_addr,
+ err = kernel_bind(sock, (struct sockaddr_unsized *)&ip6_addr,
sizeof(ip6_addr));
if (err < 0)
goto out;
@@ -1530,7 +1530,7 @@ static int l2tp_tunnel_sock_create(struct net *net,
ip_addr.l2tp_family = AF_INET;
ip_addr.l2tp_addr = cfg->local_ip;
ip_addr.l2tp_conn_id = tunnel_id;
- err = kernel_bind(sock, (struct sockaddr *)&ip_addr,
+ err = kernel_bind(sock, (struct sockaddr_unsized *)&ip_addr,
sizeof(ip_addr));
if (err < 0)
goto out;
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index 5958a80fe14c..e5bb0c0d708c 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -337,7 +337,7 @@ static int llc_ui_autobind(struct socket *sock, struct sockaddr_llc *addr)
* otherwise all hell will break loose.
* Returns: 0 upon success, negative otherwise.
*/
-static int llc_ui_bind(struct socket *sock, struct sockaddr *uaddr, int addrlen)
+static int llc_ui_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addrlen)
{
struct sockaddr_llc *addr = (struct sockaddr_llc *)uaddr;
struct sock *sk = sock->sk;
diff --git a/net/mctp/af_mctp.c b/net/mctp/af_mctp.c
index b99ba14f39d2..5b1ef50637b7 100644
--- a/net/mctp/af_mctp.c
+++ b/net/mctp/af_mctp.c
@@ -49,7 +49,7 @@ static bool mctp_sockaddr_ext_is_ok(const struct sockaddr_mctp_ext *addr)
!addr->__smctp_pad0[2];
}
-static int mctp_bind(struct socket *sock, struct sockaddr *addr, int addrlen)
+static int mctp_bind(struct socket *sock, struct sockaddr_unsized *addr, int addrlen)
{
struct sock *sk = sock->sk;
struct mctp_sock *msk = container_of(sk, struct mctp_sock, sk);
diff --git a/net/mctp/test/route-test.c b/net/mctp/test/route-test.c
index 69a3ccfc6310..be9149ac79dd 100644
--- a/net/mctp/test/route-test.c
+++ b/net/mctp/test/route-test.c
@@ -205,7 +205,7 @@ static void __mctp_route_test_init(struct kunit *test,
addr.smctp_network = netid;
addr.smctp_addr.s_addr = 8;
addr.smctp_type = 0;
- rc = kernel_bind(sock, (struct sockaddr *)&addr, sizeof(addr));
+ rc = kernel_bind(sock, (struct sockaddr_unsized *)&addr, sizeof(addr));
KUNIT_ASSERT_EQ(test, rc, 0);
*devp = dev;
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index d568575cdcb5..53e2b095dfb1 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -3856,7 +3856,7 @@ static struct proto mptcp_prot = {
.no_autobind = true,
};
-static int mptcp_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+static int mptcp_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct mptcp_sock *msk = mptcp_sk(sock->sk);
struct sock *ssk, *sk = sock->sk;
@@ -3870,10 +3870,10 @@ static int mptcp_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
}
if (sk->sk_family == AF_INET)
- err = inet_bind_sk(ssk, uaddr, addr_len);
+ err = inet_bind_sk(ssk, (struct sockaddr *)uaddr, addr_len);
#if IS_ENABLED(CONFIG_MPTCP_IPV6)
else if (sk->sk_family == AF_INET6)
- err = inet6_bind_sk(ssk, uaddr, addr_len);
+ err = inet6_bind_sk(ssk, (struct sockaddr *)uaddr, addr_len);
#endif
if (!err)
mptcp_copy_inaddrs(sk, ssk);
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index e8325890a322..d90237bf433c 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -1660,7 +1660,7 @@ int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_pm_local *local,
addrlen = sizeof(struct sockaddr_in6);
#endif
ssk->sk_bound_dev_if = local->ifindex;
- err = kernel_bind(sf, (struct sockaddr *)&addr, addrlen);
+ err = kernel_bind(sf, (struct sockaddr_unsized *)&addr, addrlen);
if (err) {
MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_JOINSYNTXBINDERR);
pr_debug("msk=%p local=%d remote=%d bind error: %d\n",
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index 3402675bf521..d8c089ef387c 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -1435,7 +1435,7 @@ static int bind_mcastif_addr(struct socket *sock, struct net_device *dev)
sin.sin_addr.s_addr = addr;
sin.sin_port = 0;
- return kernel_bind(sock, (struct sockaddr *)&sin, sizeof(sin));
+ return kernel_bind(sock, (struct sockaddr_unsized *)&sin, sizeof(sin));
}
static void get_mcast_sockaddr(union ipvs_sockaddr *sa, int *salen,
@@ -1542,7 +1542,7 @@ static int make_receive_sock(struct netns_ipvs *ipvs, int id,
get_mcast_sockaddr(&mcast_addr, &salen, &ipvs->bcfg, id);
sock->sk->sk_bound_dev_if = dev->ifindex;
- result = kernel_bind(sock, (struct sockaddr *)&mcast_addr, salen);
+ result = kernel_bind(sock, (struct sockaddr_unsized *)&mcast_addr, salen);
if (result < 0) {
pr_err("Error binding to the multicast addr\n");
goto error;
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 687a84c48882..18490a56edd0 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -966,7 +966,7 @@ static void netlink_undo_bind(int group, long unsigned int groups,
nlk->netlink_unbind(sock_net(sk), undo + 1);
}
-static int netlink_bind(struct socket *sock, struct sockaddr *addr,
+static int netlink_bind(struct socket *sock, struct sockaddr_unsized *addr,
int addr_len)
{
struct sock *sk = sock->sk;
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 3331669d8e33..33468124d53d 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -561,7 +561,7 @@ static int nr_release(struct socket *sock)
return 0;
}
-static int nr_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+static int nr_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
struct nr_sock *nr = nr_sk(sk);
diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c
index 57a2f97004e1..26e6ceb48a82 100644
--- a/net/nfc/llcp_sock.c
+++ b/net/nfc/llcp_sock.c
@@ -56,7 +56,7 @@ static struct proto llcp_sock_proto = {
.obj_size = sizeof(struct nfc_llcp_sock),
};
-static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
+static int llcp_sock_bind(struct socket *sock, struct sockaddr_unsized *addr, int alen)
{
struct sock *sk = sock->sk;
struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
@@ -146,7 +146,7 @@ static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
return ret;
}
-static int llcp_raw_sock_bind(struct socket *sock, struct sockaddr *addr,
+static int llcp_raw_sock_bind(struct socket *sock, struct sockaddr_unsized *addr,
int alen)
{
struct sock *sk = sock->sk;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 173e6edda08f..fccad2a529cc 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -3279,11 +3279,12 @@ static int packet_do_bind(struct sock *sk, const char *name, int ifindex,
* Bind a packet socket to a device
*/
-static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr,
+static int packet_bind_spkt(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len)
{
struct sock *sk = sock->sk;
- char name[sizeof(uaddr->sa_data_min) + 1];
+ struct sockaddr *sa = (struct sockaddr *)uaddr;
+ char name[sizeof(sa->sa_data_min) + 1];
/*
* Check legality
@@ -3294,13 +3295,13 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr *uaddr,
/* uaddr->sa_data comes from the userspace, it's not guaranteed to be
* zero-terminated.
*/
- memcpy(name, uaddr->sa_data, sizeof(uaddr->sa_data_min));
- name[sizeof(uaddr->sa_data_min)] = 0;
+ memcpy(name, sa->sa_data, sizeof(sa->sa_data_min));
+ name[sizeof(sa->sa_data_min)] = 0;
return packet_do_bind(sk, name, 0, 0);
}
-static int packet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+static int packet_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct sockaddr_ll *sll = (struct sockaddr_ll *)uaddr;
struct sock *sk = sock->sk;
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index db2d552e9b32..478b02647733 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -153,7 +153,7 @@ EXPORT_SYMBOL(pn_sock_unhash);
static DEFINE_MUTEX(port_mutex);
-static int pn_socket_bind(struct socket *sock, struct sockaddr *addr, int len)
+static int pn_socket_bind(struct socket *sock, struct sockaddr_unsized *addr, int len)
{
struct sock *sk = sock->sk;
struct pn_sock *pn = pn_sk(sk);
@@ -163,7 +163,7 @@ static int pn_socket_bind(struct socket *sock, struct sockaddr *addr, int len)
u8 saddr;
if (sk->sk_prot->bind)
- return sk->sk_prot->bind(sk, addr, len);
+ return sk->sk_prot->bind(sk, (struct sockaddr *)addr, len);
if (len < sizeof(struct sockaddr_pn))
return -EINVAL;
@@ -206,8 +206,8 @@ static int pn_socket_autobind(struct socket *sock)
memset(&sa, 0, sizeof(sa));
sa.spn_family = AF_PHONET;
- err = pn_socket_bind(sock, (struct sockaddr *)&sa,
- sizeof(struct sockaddr_pn));
+ err = pn_socket_bind(sock, (struct sockaddr_unsized *)&sa,
+ sizeof(struct sockaddr_pn));
if (err != -EINVAL)
return err;
BUG_ON(!pn_port(pn_sk(sock->sk)->sobject));
diff --git a/net/qrtr/af_qrtr.c b/net/qrtr/af_qrtr.c
index 00c51cf693f3..00bd3dd9f0f9 100644
--- a/net/qrtr/af_qrtr.c
+++ b/net/qrtr/af_qrtr.c
@@ -824,7 +824,7 @@ static int qrtr_autobind(struct socket *sock)
}
/* Bind socket to specified sockaddr. */
-static int qrtr_bind(struct socket *sock, struct sockaddr *saddr, int len)
+static int qrtr_bind(struct socket *sock, struct sockaddr_unsized *saddr, int len)
{
DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, saddr);
struct qrtr_sock *ipc = qrtr_sk(sock->sk);
diff --git a/net/qrtr/ns.c b/net/qrtr/ns.c
index 3de9350cbf30..bfcc1a453f23 100644
--- a/net/qrtr/ns.c
+++ b/net/qrtr/ns.c
@@ -714,7 +714,7 @@ int qrtr_ns_init(void)
sq.sq_port = QRTR_PORT_CTRL;
qrtr_ns.local_node = sq.sq_node;
- ret = kernel_bind(qrtr_ns.sock, (struct sockaddr *)&sq, sizeof(sq));
+ ret = kernel_bind(qrtr_ns.sock, (struct sockaddr_unsized *)&sq, sizeof(sq));
if (ret < 0) {
pr_err("failed to bind to socket\n");
goto err_wq;
diff --git a/net/rds/bind.c b/net/rds/bind.c
index 97a29172a8ee..f800d920d969 100644
--- a/net/rds/bind.c
+++ b/net/rds/bind.c
@@ -160,7 +160,7 @@ void rds_remove_bound(struct rds_sock *rs)
rs->rs_bound_addr = in6addr_any;
}
-int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+int rds_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
struct rds_sock *rs = rds_sk_to_rs(sk);
diff --git a/net/rds/tcp_connect.c b/net/rds/tcp_connect.c
index a0046e99d6df..1eff3b03ab77 100644
--- a/net/rds/tcp_connect.c
+++ b/net/rds/tcp_connect.c
@@ -145,7 +145,7 @@ int rds_tcp_conn_path_connect(struct rds_conn_path *cp)
addrlen = sizeof(sin);
}
- ret = kernel_bind(sock, addr, addrlen);
+ ret = kernel_bind(sock, (struct sockaddr_unsized *)addr, addrlen);
if (ret) {
rdsdebug("bind failed with %d at address %pI6c\n",
ret, &conn->c_laddr);
diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c
index 91e34af3fe5d..820d3e20de19 100644
--- a/net/rds/tcp_listen.c
+++ b/net/rds/tcp_listen.c
@@ -290,7 +290,7 @@ struct socket *rds_tcp_listen_init(struct net *net, bool isv6)
addr_len = sizeof(*sin);
}
- ret = kernel_bind(sock, (struct sockaddr *)&ss, addr_len);
+ ret = kernel_bind(sock, (struct sockaddr_unsized *)&ss, addr_len);
if (ret < 0) {
rdsdebug("could not bind %s listener socket: %d\n",
isv6 ? "IPv6" : "IPv4", ret);
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 543f9e8ebb69..47369eab5aec 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -693,7 +693,7 @@ static int rose_release(struct socket *sock)
return 0;
}
-static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+static int rose_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
struct rose_sock *rose = rose_sk(sk);
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 36df0274d7b7..245f37a74394 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -127,7 +127,7 @@ static int rxrpc_validate_address(struct rxrpc_sock *rx,
/*
* bind a local address to an RxRPC socket
*/
-static int rxrpc_bind(struct socket *sock, struct sockaddr *saddr, int len)
+static int rxrpc_bind(struct socket *sock, struct sockaddr_unsized *saddr, int len)
{
struct sockaddr_rxrpc *srx = (struct sockaddr_rxrpc *)saddr;
struct rxrpc_local *local;
diff --git a/net/rxrpc/rxperf.c b/net/rxrpc/rxperf.c
index 2ea71e3831f7..98ea76fae70f 100644
--- a/net/rxrpc/rxperf.c
+++ b/net/rxrpc/rxperf.c
@@ -211,7 +211,7 @@ static int rxperf_open_socket(void)
ret = rxrpc_sock_set_security_keyring(socket->sk, rxperf_sec_keyring);
- ret = kernel_bind(socket, (struct sockaddr *)&srx, sizeof(srx));
+ ret = kernel_bind(socket, (struct sockaddr_unsized *)&srx, sizeof(srx));
if (ret < 0)
goto error_2;
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index e9d0e62e0b1b..be18ab08f15d 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -421,7 +421,7 @@ static struct sock *smc_sock_alloc(struct net *net, struct socket *sock,
return sk;
}
-int smc_bind(struct socket *sock, struct sockaddr *uaddr,
+int smc_bind(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len)
{
struct sockaddr_in *addr = (struct sockaddr_in *)uaddr;
diff --git a/net/socket.c b/net/socket.c
index fce536d2d8b9..cf046d0bb345 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1876,7 +1876,7 @@ int __sys_bind_socket(struct socket *sock, struct sockaddr_storage *address,
addrlen);
if (!err)
err = READ_ONCE(sock->ops)->bind(sock,
- (struct sockaddr *)address,
+ (struct sockaddr_unsized *)address,
addrlen);
return err;
}
@@ -3587,13 +3587,13 @@ static long compat_sock_ioctl(struct file *file, unsigned int cmd,
* Returns 0 or an error.
*/
-int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen)
+int kernel_bind(struct socket *sock, struct sockaddr_unsized *addr, int addrlen)
{
struct sockaddr_storage address;
memcpy(&address, addr, addrlen);
- return READ_ONCE(sock->ops)->bind(sock, (struct sockaddr *)&address,
+ return READ_ONCE(sock->ops)->bind(sock, (struct sockaddr_unsized *)&address,
addrlen);
}
EXPORT_SYMBOL(kernel_bind);
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 8ca354ecfd02..318ee24ad900 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1457,12 +1457,12 @@ static int rpc_sockname(struct net *net, struct sockaddr *sap, size_t salen,
switch (sap->sa_family) {
case AF_INET:
err = kernel_bind(sock,
- (struct sockaddr *)&rpc_inaddr_loopback,
+ (struct sockaddr_unsized *)&rpc_inaddr_loopback,
sizeof(rpc_inaddr_loopback));
break;
case AF_INET6:
err = kernel_bind(sock,
- (struct sockaddr *)&rpc_in6addr_loopback,
+ (struct sockaddr_unsized *)&rpc_in6addr_loopback,
sizeof(rpc_in6addr_loopback));
break;
default:
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 7b90abc5cf0e..16ff6c100821 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -1557,7 +1557,7 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv,
ip6_sock_set_v6only(sock->sk);
if (type == SOCK_STREAM)
sock->sk->sk_reuse = SK_CAN_REUSE; /* allow address reuse */
- error = kernel_bind(sock, sin, len);
+ error = kernel_bind(sock, (struct sockaddr_unsized *)sin, len);
if (error < 0)
goto bummer;
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 3aa987e7f072..95732a45b059 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1845,8 +1845,8 @@ static int xs_bind(struct sock_xprt *transport, struct socket *sock)
memcpy(&myaddr, &transport->srcaddr, transport->xprt.addrlen);
do {
rpc_set_port((struct sockaddr *)&myaddr, port);
- err = kernel_bind(sock, (struct sockaddr *)&myaddr,
- transport->xprt.addrlen);
+ err = kernel_bind(sock, (struct sockaddr_unsized *)&myaddr,
+ transport->xprt.addrlen);
if (err == 0) {
if (transport->xprt.reuseport)
transport->srcport = port;
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index bc614a1f019c..3903a97ada7d 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -710,7 +710,7 @@ int tipc_sk_bind(struct socket *sock, struct sockaddr *skaddr, int alen)
return res;
}
-static int tipc_bind(struct socket *sock, struct sockaddr *skaddr, int alen)
+static int tipc_bind(struct socket *sock, struct sockaddr_unsized *skaddr, int alen)
{
struct tipc_uaddr *ua = (struct tipc_uaddr *)skaddr;
u32 atype = ua->addrtype;
@@ -726,7 +726,7 @@ static int tipc_bind(struct socket *sock, struct sockaddr *skaddr, int alen)
return -EACCES;
}
}
- return tipc_sk_bind(sock, skaddr, alen);
+ return tipc_sk_bind(sock, (struct sockaddr *)skaddr, alen);
}
/**
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 750fa09261db..bba202b1a740 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -843,7 +843,7 @@ static int unix_listen(struct socket *sock, int backlog)
}
static int unix_release(struct socket *);
-static int unix_bind(struct socket *, struct sockaddr *, int);
+static int unix_bind(struct socket *, struct sockaddr_unsized *, int);
static int unix_stream_connect(struct socket *, struct sockaddr *,
int addr_len, int flags);
static int unix_socketpair(struct socket *, struct socket *);
@@ -1457,7 +1457,7 @@ static int unix_bind_abstract(struct sock *sk, struct sockaddr_un *sunaddr,
return err;
}
-static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+static int unix_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr;
struct sock *sk = sock->sk;
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 76763247a377..0e5609e7284b 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -987,7 +987,7 @@ static int vsock_release(struct socket *sock)
}
static int
-vsock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
+vsock_bind(struct socket *sock, struct sockaddr_unsized *addr, int addr_len)
{
int err;
struct sock *sk;
@@ -995,7 +995,7 @@ vsock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
sk = sock->sk;
- if (vsock_addr_cast(addr, addr_len, &vm_addr) != 0)
+ if (vsock_addr_cast((struct sockaddr *)addr, addr_len, &vm_addr) != 0)
return -EINVAL;
lock_sock(sk);
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 655d1e0ae25f..ca8006d8f792 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -670,7 +670,7 @@ static int x25_release(struct socket *sock)
return 0;
}
-static int x25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+static int x25_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
struct sockaddr_x25 *addr = (struct sockaddr_x25 *)uaddr;
diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index 7b0c68a70888..fb878a9e922f 100644
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c
@@ -1241,7 +1241,7 @@ static bool xsk_validate_queues(struct xdp_sock *xs)
return xs->fq_tmp && xs->cq_tmp;
}
-static int xsk_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
+static int xsk_bind(struct socket *sock, struct sockaddr_unsized *addr, int addr_len)
{
struct sockaddr_xdp *sxdp = (struct sockaddr_xdp *)addr;
struct sock *sk = sock->sk;
diff --git a/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c b/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c
index 8074bc5f6f20..0497b5dea25c 100644
--- a/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c
+++ b/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c
@@ -923,7 +923,7 @@ __bpf_kfunc int bpf_kfunc_call_kernel_bind(struct addr_args *args)
goto out;
}
- err = kernel_bind(sock, (struct sockaddr *)&args->addr, args->addrlen);
+ err = kernel_bind(sock, (struct sockaddr_unsized *)&args->addr, args->addrlen);
out:
mutex_unlock(&sock_lock);
--
2.34.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH net-next v5 3/8] net: Convert proto_ops connect() callbacks to use sockaddr_unsized
2025-11-04 0:26 [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized Kees Cook
2025-11-04 0:26 ` [PATCH net-next v5 1/8] net: Add struct sockaddr_unsized for sockaddr of unknown length Kees Cook
2025-11-04 0:26 ` [PATCH net-next v5 2/8] net: Convert proto_ops bind() callbacks to use sockaddr_unsized Kees Cook
@ 2025-11-04 0:26 ` Kees Cook
2025-11-04 0:26 ` [PATCH net-next v5 4/8] net: Remove struct sockaddr from net.h Kees Cook
` (5 subsequent siblings)
8 siblings, 0 replies; 12+ messages in thread
From: Kees Cook @ 2025-11-04 0:26 UTC (permalink / raw)
To: Paolo Abeni
Cc: Kees Cook, Jakub Kicinski, Gustavo A. R. Silva,
Alexei Starovoitov, Daniel Borkmann, John Fastabend,
David S. Miller, Eric Dumazet, Simon Horman, Kuniyuki Iwashima,
Willem de Bruijn, netdev, linux-kernel, bpf, linux-hardening
Update all struct proto_ops connect() callback function prototypes from
"struct sockaddr *" to "struct sockaddr_unsized *" to avoid lying to the
compiler about object sizes. Calls into struct proto handlers gain casts
that will be removed in the struct proto conversion patch.
No binary changes expected.
Signed-off-by: Kees Cook <kees@kernel.org>
---
include/linux/bpf-cgroup.h | 6 +++---
include/linux/net.h | 4 ++--
include/net/inet_common.h | 6 +++---
include/net/sctp/sctp.h | 2 +-
include/net/sock.h | 2 +-
include/net/vsock_addr.h | 2 +-
net/smc/smc.h | 2 +-
drivers/block/drbd/drbd_receiver.c | 2 +-
drivers/infiniband/hw/erdma/erdma_cm.c | 2 +-
drivers/infiniband/sw/siw/siw_cm.c | 2 +-
drivers/net/ppp/pppoe.c | 4 ++--
drivers/net/ppp/pptp.c | 4 ++--
drivers/net/wireless/ath/ath10k/qmi.c | 2 +-
drivers/net/wireless/ath/ath11k/qmi.c | 2 +-
drivers/net/wireless/ath/ath12k/qmi.c | 2 +-
drivers/nvme/host/tcp.c | 2 +-
drivers/slimbus/qcom-ngd-ctrl.c | 2 +-
drivers/xen/pvcalls-back.c | 2 +-
fs/coredump.c | 2 +-
fs/dlm/lowcomms.c | 2 +-
fs/ocfs2/cluster/tcp.c | 2 +-
fs/smb/client/connect.c | 2 +-
net/9p/trans_fd.c | 6 +++---
net/appletalk/ddp.c | 2 +-
net/atm/pvc.c | 4 ++--
net/atm/svc.c | 2 +-
net/ax25/af_ax25.c | 2 +-
net/bluetooth/iso.c | 2 +-
net/bluetooth/l2cap_sock.c | 2 +-
net/bluetooth/rfcomm/core.c | 2 +-
net/bluetooth/rfcomm/sock.c | 3 ++-
net/bluetooth/sco.c | 2 +-
net/caif/caif_socket.c | 2 +-
net/can/bcm.c | 2 +-
net/can/j1939/socket.c | 2 +-
net/ceph/messenger.c | 2 +-
net/core/sock.c | 2 +-
net/ieee802154/socket.c | 4 ++--
net/ipv4/af_inet.c | 14 +++++++-------
net/ipv4/tcp.c | 2 +-
net/ipv4/udp_tunnel_core.c | 2 +-
net/ipv6/ip6_udp_tunnel.c | 2 +-
net/iucv/af_iucv.c | 4 ++--
net/l2tp/l2tp_core.c | 4 ++--
net/l2tp/l2tp_ppp.c | 2 +-
net/llc/af_llc.c | 2 +-
net/mctp/af_mctp.c | 2 +-
net/mctp/test/utils.c | 5 +++--
net/mptcp/subflow.c | 2 +-
net/netfilter/ipvs/ip_vs_sync.c | 2 +-
net/netlink/af_netlink.c | 2 +-
net/netrom/af_netrom.c | 4 ++--
net/nfc/llcp_sock.c | 2 +-
net/nfc/rawsock.c | 2 +-
net/phonet/socket.c | 6 +++---
net/qrtr/af_qrtr.c | 2 +-
net/rds/af_rds.c | 2 +-
net/rds/tcp_connect.c | 2 +-
net/rose/af_rose.c | 3 ++-
net/rxrpc/af_rxrpc.c | 2 +-
net/sctp/socket.c | 4 ++--
net/smc/af_smc.c | 4 ++--
net/socket.c | 8 ++++----
net/sunrpc/clnt.c | 2 +-
net/sunrpc/xprtsock.c | 5 +++--
net/tipc/socket.c | 2 +-
net/unix/af_unix.c | 8 ++++----
net/vmw_vsock/af_vsock.c | 6 +++---
net/vmw_vsock/vsock_addr.c | 2 +-
net/x25/af_x25.c | 2 +-
samples/qmi/qmi_sample_client.c | 2 +-
.../testing/selftests/bpf/test_kmods/bpf_testmod.c | 2 +-
72 files changed, 110 insertions(+), 106 deletions(-)
diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h
index aedf573bdb42..a7fb4f46974f 100644
--- a/include/linux/bpf-cgroup.h
+++ b/include/linux/bpf-cgroup.h
@@ -238,7 +238,7 @@ static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
({ \
int __ret = 0; \
if (cgroup_bpf_enabled(atype)) \
- __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, uaddrlen, \
+ __ret = __cgroup_bpf_run_filter_sock_addr(sk, (struct sockaddr *)uaddr, uaddrlen, \
atype, NULL, NULL); \
__ret; \
})
@@ -248,7 +248,7 @@ static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
int __ret = 0; \
if (cgroup_bpf_enabled(atype)) { \
lock_sock(sk); \
- __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, uaddrlen, \
+ __ret = __cgroup_bpf_run_filter_sock_addr(sk, (struct sockaddr *)uaddr, uaddrlen, \
atype, t_ctx, NULL); \
release_sock(sk); \
} \
@@ -266,7 +266,7 @@ static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
int __ret = 0; \
if (cgroup_bpf_enabled(atype)) { \
lock_sock(sk); \
- __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, uaddrlen, \
+ __ret = __cgroup_bpf_run_filter_sock_addr(sk, (struct sockaddr *)uaddr, uaddrlen, \
atype, NULL, &__flags); \
release_sock(sk); \
if (__flags & BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE) \
diff --git a/include/linux/net.h b/include/linux/net.h
index 0e316f063113..db6bc997ca5b 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -166,7 +166,7 @@ struct proto_ops {
struct sockaddr_unsized *myaddr,
int sockaddr_len);
int (*connect) (struct socket *sock,
- struct sockaddr *vaddr,
+ struct sockaddr_unsized *vaddr,
int sockaddr_len, int flags);
int (*socketpair)(struct socket *sock1,
struct socket *sock2);
@@ -348,7 +348,7 @@ int kernel_recvmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec,
int kernel_bind(struct socket *sock, struct sockaddr_unsized *addr, int addrlen);
int kernel_listen(struct socket *sock, int backlog);
int kernel_accept(struct socket *sock, struct socket **newsock, int flags);
-int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen,
+int kernel_connect(struct socket *sock, struct sockaddr_unsized *addr, int addrlen,
int flags);
int kernel_getsockname(struct socket *sock, struct sockaddr *addr);
int kernel_getpeername(struct socket *sock, struct sockaddr *addr);
diff --git a/include/net/inet_common.h b/include/net/inet_common.h
index 1666cf6f539e..ebafd96912bb 100644
--- a/include/net/inet_common.h
+++ b/include/net/inet_common.h
@@ -23,11 +23,11 @@ struct sockaddr;
struct socket;
int inet_release(struct socket *sock);
-int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
+int inet_stream_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags);
-int __inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
+int __inet_stream_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags, int is_sendmsg);
-int inet_dgram_connect(struct socket *sock, struct sockaddr *uaddr,
+int inet_dgram_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags);
int inet_accept(struct socket *sock, struct socket *newsock,
struct proto_accept_arg *arg);
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index bb4b80c12541..58242b37b47a 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -85,7 +85,7 @@ void sctp_udp_sock_stop(struct net *net);
/*
* sctp/socket.c
*/
-int sctp_inet_connect(struct socket *sock, struct sockaddr *uaddr,
+int sctp_inet_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags);
int sctp_backlog_rcv(struct sock *sk, struct sk_buff *skb);
int sctp_inet_listen(struct socket *sock, int backlog);
diff --git a/include/net/sock.h b/include/net/sock.h
index beee4b8d80d3..697118144dde 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1921,7 +1921,7 @@ int sock_cmsg_send(struct sock *sk, struct msghdr *msg,
* does not implement a particular function.
*/
int sock_no_bind(struct socket *sock, struct sockaddr_unsized *saddr, int len);
-int sock_no_connect(struct socket *, struct sockaddr *, int, int);
+int sock_no_connect(struct socket *sock, struct sockaddr_unsized *saddr, int len, int flags);
int sock_no_socketpair(struct socket *, struct socket *);
int sock_no_accept(struct socket *, struct socket *, struct proto_accept_arg *);
int sock_no_getname(struct socket *, struct sockaddr *, int);
diff --git a/include/net/vsock_addr.h b/include/net/vsock_addr.h
index cf8cc140d68d..c3f4cc206198 100644
--- a/include/net/vsock_addr.h
+++ b/include/net/vsock_addr.h
@@ -16,7 +16,7 @@ bool vsock_addr_bound(const struct sockaddr_vm *addr);
void vsock_addr_unbind(struct sockaddr_vm *addr);
bool vsock_addr_equals_addr(const struct sockaddr_vm *addr,
const struct sockaddr_vm *other);
-int vsock_addr_cast(const struct sockaddr *addr, size_t len,
+int vsock_addr_cast(const struct sockaddr_unsized *addr, size_t len,
struct sockaddr_vm **out_addr);
#endif
diff --git a/net/smc/smc.h b/net/smc/smc.h
index a008dbe6d6f6..9e6af72784ba 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -44,7 +44,7 @@ void smc_release_cb(struct sock *sk);
int smc_release(struct socket *sock);
int smc_bind(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len);
-int smc_connect(struct socket *sock, struct sockaddr *addr,
+int smc_connect(struct socket *sock, struct sockaddr_unsized *addr,
int alen, int flags);
int smc_accept(struct socket *sock, struct socket *new_sock,
struct proto_accept_arg *arg);
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index d9296f74f902..33bc91665fe8 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -458,7 +458,7 @@ static struct socket *drbd_try_connect(struct drbd_connection *connection)
* stay C_WF_CONNECTION, don't go Disconnecting! */
disconnect_on_error = 0;
what = "connect";
- err = sock->ops->connect(sock, (struct sockaddr *) &peer_in6, peer_addr_len, 0);
+ err = sock->ops->connect(sock, (struct sockaddr_unsized *) &peer_in6, peer_addr_len, 0);
out:
if (err < 0) {
diff --git a/drivers/infiniband/hw/erdma/erdma_cm.c b/drivers/infiniband/hw/erdma/erdma_cm.c
index ef66a6359eb9..ed21ba0037a4 100644
--- a/drivers/infiniband/hw/erdma/erdma_cm.c
+++ b/drivers/infiniband/hw/erdma/erdma_cm.c
@@ -996,7 +996,7 @@ static int kernel_bindconnect(struct socket *s, struct sockaddr *laddr,
ret = s->ops->bind(s, (struct sockaddr_unsized *)laddr, laddrlen);
if (ret)
return ret;
- ret = s->ops->connect(s, raddr, raddrlen, flags);
+ ret = s->ops->connect(s, (struct sockaddr_unsized *)raddr, raddrlen, flags);
return ret < 0 ? ret : 0;
}
diff --git a/drivers/infiniband/sw/siw/siw_cm.c b/drivers/infiniband/sw/siw/siw_cm.c
index 7fe118cacb3f..eb0bd4f79a85 100644
--- a/drivers/infiniband/sw/siw/siw_cm.c
+++ b/drivers/infiniband/sw/siw/siw_cm.c
@@ -1344,7 +1344,7 @@ static int kernel_bindconnect(struct socket *s, struct sockaddr *laddr,
if (rv < 0)
return rv;
- rv = s->ops->connect(s, raddr, size, flags);
+ rv = s->ops->connect(s, (struct sockaddr_unsized *)raddr, size, flags);
return rv < 0 ? rv : 0;
}
diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
index 4ac6afce267b..4275b393a454 100644
--- a/drivers/net/ppp/pppoe.c
+++ b/drivers/net/ppp/pppoe.c
@@ -608,8 +608,8 @@ static int pppoe_release(struct socket *sock)
return 0;
}
-static int pppoe_connect(struct socket *sock, struct sockaddr *uservaddr,
- int sockaddr_len, int flags)
+static int pppoe_connect(struct socket *sock, struct sockaddr_unsized *uservaddr,
+ int sockaddr_len, int flags)
{
struct sock *sk = sock->sk;
struct sockaddr_pppox *sp = (struct sockaddr_pppox *)uservaddr;
diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
index d07e87a0974c..b18acd810561 100644
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c
@@ -415,8 +415,8 @@ static int pptp_bind(struct socket *sock, struct sockaddr_unsized *uservaddr,
return error;
}
-static int pptp_connect(struct socket *sock, struct sockaddr *uservaddr,
- int sockaddr_len, int flags)
+static int pptp_connect(struct socket *sock, struct sockaddr_unsized *uservaddr,
+ int sockaddr_len, int flags)
{
struct sock *sk = sock->sk;
struct sockaddr_pppox *sp = (struct sockaddr_pppox *) uservaddr;
diff --git a/drivers/net/wireless/ath/ath10k/qmi.c b/drivers/net/wireless/ath/ath10k/qmi.c
index f1f33af0170a..8275345631a0 100644
--- a/drivers/net/wireless/ath/ath10k/qmi.c
+++ b/drivers/net/wireless/ath/ath10k/qmi.c
@@ -986,7 +986,7 @@ static int ath10k_qmi_new_server(struct qmi_handle *qmi_hdl,
ath10k_dbg(ar, ATH10K_DBG_QMI, "wifi fw qmi service found\n");
- ret = kernel_connect(qmi_hdl->sock, (struct sockaddr *)&qmi->sq,
+ ret = kernel_connect(qmi_hdl->sock, (struct sockaddr_unsized *)&qmi->sq,
sizeof(qmi->sq), 0);
if (ret) {
ath10k_err(ar, "failed to connect to a remote QMI service port\n");
diff --git a/drivers/net/wireless/ath/ath11k/qmi.c b/drivers/net/wireless/ath/ath11k/qmi.c
index aea56c38bf8f..ff6a97e328b8 100644
--- a/drivers/net/wireless/ath/ath11k/qmi.c
+++ b/drivers/net/wireless/ath/ath11k/qmi.c
@@ -3177,7 +3177,7 @@ static int ath11k_qmi_ops_new_server(struct qmi_handle *qmi_hdl,
sq->sq_node = service->node;
sq->sq_port = service->port;
- ret = kernel_connect(qmi_hdl->sock, (struct sockaddr *)sq,
+ ret = kernel_connect(qmi_hdl->sock, (struct sockaddr_unsized *)sq,
sizeof(*sq), 0);
if (ret) {
ath11k_warn(ab, "failed to connect to qmi remote service: %d\n", ret);
diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c
index 8de9aee2498e..b7c48b6706df 100644
--- a/drivers/net/wireless/ath/ath12k/qmi.c
+++ b/drivers/net/wireless/ath/ath12k/qmi.c
@@ -3743,7 +3743,7 @@ static int ath12k_qmi_ops_new_server(struct qmi_handle *qmi_hdl,
sq->sq_node = service->node;
sq->sq_port = service->port;
- ret = kernel_connect(qmi_hdl->sock, (struct sockaddr *)sq,
+ ret = kernel_connect(qmi_hdl->sock, (struct sockaddr_unsized *)sq,
sizeof(*sq), 0);
if (ret) {
ath12k_warn(ab, "qmi failed to connect to remote service %d\n", ret);
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 35d0bd91f6fd..6795b8286c35 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -1872,7 +1872,7 @@ static int nvme_tcp_alloc_queue(struct nvme_ctrl *nctrl, int qid,
dev_dbg(nctrl->device, "connecting queue %d\n",
nvme_tcp_queue_id(queue));
- ret = kernel_connect(queue->sock, (struct sockaddr *)&ctrl->addr,
+ ret = kernel_connect(queue->sock, (struct sockaddr_unsized *)&ctrl->addr,
sizeof(ctrl->addr), 0);
if (ret) {
dev_err(nctrl->device,
diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index 4fb66986cc22..fdb94dc4a730 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -463,7 +463,7 @@ static int qcom_slim_qmi_init(struct qcom_slim_ngd_ctrl *ctrl,
}
rc = kernel_connect(handle->sock,
- (struct sockaddr *)&ctrl->qmi.svc_info,
+ (struct sockaddr_unsized *)&ctrl->qmi.svc_info,
sizeof(ctrl->qmi.svc_info), 0);
if (rc < 0) {
dev_err(ctrl->dev, "Remote Service connect failed: %d\n", rc);
diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c
index da1b516b9cfd..c5b6f6fa11eb 100644
--- a/drivers/xen/pvcalls-back.c
+++ b/drivers/xen/pvcalls-back.c
@@ -409,7 +409,7 @@ static int pvcalls_back_connect(struct xenbus_device *dev,
ret = sock_create(AF_INET, SOCK_STREAM, 0, &sock);
if (ret < 0)
goto out;
- ret = inet_stream_connect(sock, sa, req->u.connect.len, 0);
+ ret = inet_stream_connect(sock, (struct sockaddr_unsized *)sa, req->u.connect.len, 0);
if (ret < 0) {
sock_release(sock);
goto out;
diff --git a/fs/coredump.c b/fs/coredump.c
index 5c1c381ee380..14837d9e2abb 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -708,7 +708,7 @@ static bool coredump_sock_connect(struct core_name *cn, struct coredump_params *
*/
pidfs_coredump(cprm);
- retval = kernel_connect(socket, (struct sockaddr *)(&addr), addr_len,
+ retval = kernel_connect(socket, (struct sockaddr_unsized *)(&addr), addr_len,
O_NONBLOCK | SOCK_COREDUMP);
if (retval) {
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 0500421b6e3b..f832dafdaca8 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -1599,7 +1599,7 @@ static int dlm_connect(struct connection *con)
log_print_ratelimited("connecting to %d", con->nodeid);
make_sockaddr(&addr, dlm_config.ci_tcp_port, &addr_len);
- result = kernel_connect(sock, (struct sockaddr *)&addr, addr_len, 0);
+ result = kernel_connect(sock, (struct sockaddr_unsized *)&addr, addr_len, 0);
switch (result) {
case -EINPROGRESS:
/* not an error */
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index c7734193d8d7..79b281e32f4c 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -1638,7 +1638,7 @@ static void o2net_start_connect(struct work_struct *work)
remoteaddr.sin_port = node->nd_ipv4_port;
ret = sc->sc_sock->ops->connect(sc->sc_sock,
- (struct sockaddr *)&remoteaddr,
+ (struct sockaddr_unsized *)&remoteaddr,
sizeof(remoteaddr),
O_NONBLOCK);
if (ret == -EINPROGRESS)
diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c
index 5c535026e5e7..176301191f29 100644
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -3403,7 +3403,7 @@ generic_ip_connect(struct TCP_Server_Info *server)
socket->sk->sk_sndbuf,
socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo);
- rc = kernel_connect(socket, saddr, slen,
+ rc = kernel_connect(socket, (struct sockaddr_unsized *)saddr, slen,
server->noblockcnt ? O_NONBLOCK : 0);
/*
* When mounting SMB root file systems, we do not want to block in
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index ef517bb307e2..49d674f5e73a 100644
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -1018,7 +1018,7 @@ p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args)
}
err = READ_ONCE(csocket->ops)->connect(csocket,
- (struct sockaddr *)&stor,
+ (struct sockaddr_unsized *)&stor,
sizeof(stor), 0);
if (err < 0) {
pr_err("%s (%d): problem connecting socket to %s\n",
@@ -1058,8 +1058,8 @@ p9_fd_create_unix(struct p9_client *client, const char *addr, char *args)
return err;
}
- err = READ_ONCE(csocket->ops)->connect(csocket, (struct sockaddr *)&sun_server,
- sizeof(struct sockaddr_un) - 1, 0);
+ err = READ_ONCE(csocket->ops)->connect(csocket, (struct sockaddr_unsized *)&sun_server,
+ sizeof(struct sockaddr_un) - 1, 0);
if (err < 0) {
pr_err("%s (%d): problem connecting socket: %s: %d\n",
__func__, task_pid_nr(current), addr, err);
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 45db43cde67f..2a01fff46c9d 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1204,7 +1204,7 @@ static int atalk_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int a
}
/* Set the address we talk to */
-static int atalk_connect(struct socket *sock, struct sockaddr *uaddr,
+static int atalk_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags)
{
struct sock *sk = sock->sk;
diff --git a/net/atm/pvc.c b/net/atm/pvc.c
index 62fdf07c53de..8f5e76f5dd9e 100644
--- a/net/atm/pvc.c
+++ b/net/atm/pvc.c
@@ -56,10 +56,10 @@ static int pvc_bind(struct socket *sock, struct sockaddr_unsized *sockaddr,
return error;
}
-static int pvc_connect(struct socket *sock, struct sockaddr *sockaddr,
+static int pvc_connect(struct socket *sock, struct sockaddr_unsized *sockaddr,
int sockaddr_len, int flags)
{
- return pvc_bind(sock, (struct sockaddr_unsized *)sockaddr, sockaddr_len);
+ return pvc_bind(sock, sockaddr, sockaddr_len);
}
static int pvc_setsockopt(struct socket *sock, int level, int optname,
diff --git a/net/atm/svc.c b/net/atm/svc.c
index 1906a493c8aa..005964250ecd 100644
--- a/net/atm/svc.c
+++ b/net/atm/svc.c
@@ -153,7 +153,7 @@ static int svc_bind(struct socket *sock, struct sockaddr_unsized *sockaddr,
return error;
}
-static int svc_connect(struct socket *sock, struct sockaddr *sockaddr,
+static int svc_connect(struct socket *sock, struct sockaddr_unsized *sockaddr,
int sockaddr_len, int flags)
{
DEFINE_WAIT(wait);
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 23c558ff9682..7ebbff2f0020 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1175,7 +1175,7 @@ static int ax25_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int ad
* FIXME: nonblock behaviour looks like it may have a bug.
*/
static int __must_check ax25_connect(struct socket *sock,
- struct sockaddr *uaddr, int addr_len, int flags)
+ struct sockaddr_unsized *uaddr, int addr_len, int flags)
{
struct sock *sk = sock->sk;
ax25_cb *ax25 = sk_to_ax25(sk), *ax25t;
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index 28c3dc4449e3..8fa51b4a03a2 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -1162,7 +1162,7 @@ static int iso_sock_bind(struct socket *sock, struct sockaddr_unsized *addr,
return err;
}
-static int iso_sock_connect(struct socket *sock, struct sockaddr *addr,
+static int iso_sock_connect(struct socket *sock, struct sockaddr_unsized *addr,
int alen, int flags)
{
struct sockaddr_iso *sa = (struct sockaddr_iso *)addr;
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index ca7394d8fa4e..9ee189c815d4 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -178,7 +178,7 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr_unsized *addr, i
return err;
}
-static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr,
+static int l2cap_sock_connect(struct socket *sock, struct sockaddr_unsized *addr,
int alen, int flags)
{
struct sock *sk = sock->sk;
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index d62fd6c57617..57b1dca8141f 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -808,7 +808,7 @@ static struct rfcomm_session *rfcomm_session_create(bdaddr_t *src,
addr.l2_psm = cpu_to_le16(L2CAP_PSM_RFCOMM);
addr.l2_cid = 0;
addr.l2_bdaddr_type = BDADDR_BREDR;
- *err = kernel_connect(sock, (struct sockaddr *) &addr, sizeof(addr), O_NONBLOCK);
+ *err = kernel_connect(sock, (struct sockaddr_unsized *)&addr, sizeof(addr), O_NONBLOCK);
if (*err == 0 || *err == -EINPROGRESS)
return s;
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 8c8762bbc6de..be6639cd6f59 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -371,7 +371,8 @@ static int rfcomm_sock_bind(struct socket *sock, struct sockaddr_unsized *addr,
return err;
}
-static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
+static int rfcomm_sock_connect(struct socket *sock, struct sockaddr_unsized *addr,
+ int alen, int flags)
{
struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
struct sock *sk = sock->sk;
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 01d878205e58..7afe65e7ff37 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -639,7 +639,7 @@ static int sco_sock_bind(struct socket *sock, struct sockaddr_unsized *addr,
return err;
}
-static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags)
+static int sco_sock_connect(struct socket *sock, struct sockaddr_unsized *addr, int alen, int flags)
{
struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
struct sock *sk = sock->sk;
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
index 039dfbd367c9..af218742af5a 100644
--- a/net/caif/caif_socket.c
+++ b/net/caif/caif_socket.c
@@ -734,7 +734,7 @@ static int setsockopt(struct socket *sock, int lvl, int opt, sockptr_t ov,
* o sock->state: holds the SS_* socket state and is updated by connect and
* disconnect.
*/
-static int caif_connect(struct socket *sock, struct sockaddr *uaddr,
+static int caif_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags)
{
struct sock *sk = sock->sk;
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 5e690a2377e4..7eba8ae01a5b 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1657,7 +1657,7 @@ static int bcm_release(struct socket *sock)
return 0;
}
-static int bcm_connect(struct socket *sock, struct sockaddr *uaddr, int len,
+static int bcm_connect(struct socket *sock, struct sockaddr_unsized *uaddr, int len,
int flags)
{
struct sockaddr_can *addr = (struct sockaddr_can *)uaddr;
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index a2abedc757d0..6272326dd614 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -535,7 +535,7 @@ static int j1939_sk_bind(struct socket *sock, struct sockaddr_unsized *uaddr, in
return ret;
}
-static int j1939_sk_connect(struct socket *sock, struct sockaddr *uaddr,
+static int j1939_sk_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int len, int flags)
{
struct sockaddr_can *addr = (struct sockaddr_can *)uaddr;
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index f8181acaf870..70b25f4ecba6 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -460,7 +460,7 @@ int ceph_tcp_connect(struct ceph_connection *con)
set_sock_callbacks(sock, con);
con_sock_state_connecting(con);
- ret = kernel_connect(sock, (struct sockaddr *)&ss, sizeof(ss),
+ ret = kernel_connect(sock, (struct sockaddr_unsized *)&ss, sizeof(ss),
O_NONBLOCK);
if (ret == -EINPROGRESS) {
dout("connect %s EINPROGRESS sk_state = %u\n",
diff --git a/net/core/sock.c b/net/core/sock.c
index 1e1ce18bba16..f97a0e958991 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -3468,7 +3468,7 @@ int sock_no_bind(struct socket *sock, struct sockaddr_unsized *saddr, int len)
}
EXPORT_SYMBOL(sock_no_bind);
-int sock_no_connect(struct socket *sock, struct sockaddr *saddr,
+int sock_no_connect(struct socket *sock, struct sockaddr_unsized *saddr,
int len, int flags)
{
return -EOPNOTSUPP;
diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index 99ddfad9bb88..b93fd85f248a 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -107,7 +107,7 @@ static int ieee802154_sock_bind(struct socket *sock, struct sockaddr_unsized *ua
return sock_no_bind(sock, uaddr, addr_len);
}
-static int ieee802154_sock_connect(struct socket *sock, struct sockaddr *uaddr,
+static int ieee802154_sock_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags)
{
struct sock *sk = sock->sk;
@@ -118,7 +118,7 @@ static int ieee802154_sock_connect(struct socket *sock, struct sockaddr *uaddr,
if (uaddr->sa_family == AF_UNSPEC)
return sk->sk_prot->disconnect(sk, flags);
- return sk->sk_prot->connect(sk, uaddr, addr_len);
+ return sk->sk_prot->connect(sk, (struct sockaddr *)uaddr, addr_len);
}
static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index aa43d16e48ff..0844de9ac6a4 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -567,7 +567,7 @@ int __inet_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
return err;
}
-int inet_dgram_connect(struct socket *sock, struct sockaddr *uaddr,
+int inet_dgram_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags)
{
struct sock *sk = sock->sk;
@@ -584,14 +584,14 @@ int inet_dgram_connect(struct socket *sock, struct sockaddr *uaddr,
return prot->disconnect(sk, flags);
if (BPF_CGROUP_PRE_CONNECT_ENABLED(sk)) {
- err = prot->pre_connect(sk, uaddr, addr_len);
+ err = prot->pre_connect(sk, (struct sockaddr *)uaddr, addr_len);
if (err)
return err;
}
if (data_race(!inet_sk(sk)->inet_num) && inet_autobind(sk))
return -EAGAIN;
- return prot->connect(sk, uaddr, addr_len);
+ return prot->connect(sk, (struct sockaddr *)uaddr, addr_len);
}
EXPORT_SYMBOL(inet_dgram_connect);
@@ -623,7 +623,7 @@ static long inet_wait_for_connect(struct sock *sk, long timeo, int writebias)
* Connect to a remote host. There is regrettably still a little
* TCP 'magic' in here.
*/
-int __inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
+int __inet_stream_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags, int is_sendmsg)
{
struct sock *sk = sock->sk;
@@ -671,12 +671,12 @@ int __inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
goto out;
if (BPF_CGROUP_PRE_CONNECT_ENABLED(sk)) {
- err = sk->sk_prot->pre_connect(sk, uaddr, addr_len);
+ err = sk->sk_prot->pre_connect(sk, (struct sockaddr *)uaddr, addr_len);
if (err)
goto out;
}
- err = sk->sk_prot->connect(sk, uaddr, addr_len);
+ err = sk->sk_prot->connect(sk, (struct sockaddr *)uaddr, addr_len);
if (err < 0)
goto out;
@@ -741,7 +741,7 @@ int __inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
}
EXPORT_SYMBOL(__inet_stream_connect);
-int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
+int inet_stream_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags)
{
int err;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index a9345aa5a2e5..dee578aad690 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1061,7 +1061,7 @@ int tcp_sendmsg_fastopen(struct sock *sk, struct msghdr *msg, int *copied,
}
}
flags = (msg->msg_flags & MSG_DONTWAIT) ? O_NONBLOCK : 0;
- err = __inet_stream_connect(sk->sk_socket, uaddr,
+ err = __inet_stream_connect(sk->sk_socket, (struct sockaddr_unsized *)uaddr,
msg->msg_namelen, flags, 1);
/* fastopen_req could already be freed in __inet_stream_connect
* if the connection times out or gets rst
diff --git a/net/ipv4/udp_tunnel_core.c b/net/ipv4/udp_tunnel_core.c
index 11e5a88c923d..b1f667c52cb2 100644
--- a/net/ipv4/udp_tunnel_core.c
+++ b/net/ipv4/udp_tunnel_core.c
@@ -38,7 +38,7 @@ int udp_sock_create4(struct net *net, struct udp_port_cfg *cfg,
udp_addr.sin_family = AF_INET;
udp_addr.sin_addr = cfg->peer_ip;
udp_addr.sin_port = cfg->peer_udp_port;
- err = kernel_connect(sock, (struct sockaddr *)&udp_addr,
+ err = kernel_connect(sock, (struct sockaddr_unsized *)&udp_addr,
sizeof(udp_addr), 0);
if (err < 0)
goto error;
diff --git a/net/ipv6/ip6_udp_tunnel.c b/net/ipv6/ip6_udp_tunnel.c
index b0d9286b33c8..cef3e0210744 100644
--- a/net/ipv6/ip6_udp_tunnel.c
+++ b/net/ipv6/ip6_udp_tunnel.c
@@ -52,7 +52,7 @@ int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
sizeof(udp6_addr.sin6_addr));
udp6_addr.sin6_port = cfg->peer_udp_port;
err = kernel_connect(sock,
- (struct sockaddr *)&udp6_addr,
+ (struct sockaddr_unsized *)&udp6_addr,
sizeof(udp6_addr), 0);
}
if (err < 0)
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index 3941e32cda69..a4f1df92417d 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -668,7 +668,7 @@ static int iucv_sock_autobind(struct sock *sk)
return err;
}
-static int afiucv_path_connect(struct socket *sock, struct sockaddr *addr)
+static int afiucv_path_connect(struct socket *sock, struct sockaddr_unsized *addr)
{
DECLARE_SOCKADDR(struct sockaddr_iucv *, sa, addr);
struct sock *sk = sock->sk;
@@ -714,7 +714,7 @@ static int afiucv_path_connect(struct socket *sock, struct sockaddr *addr)
}
/* Connect an unconnected socket */
-static int iucv_sock_connect(struct socket *sock, struct sockaddr *addr,
+static int iucv_sock_connect(struct socket *sock, struct sockaddr_unsized *addr,
int alen, int flags)
{
DECLARE_SOCKADDR(struct sockaddr_iucv *, sa, addr);
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 4b5e372a5cd4..c4f4a57cd67c 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1513,7 +1513,7 @@ static int l2tp_tunnel_sock_create(struct net *net,
sizeof(ip6_addr.l2tp_addr));
ip6_addr.l2tp_conn_id = peer_tunnel_id;
err = kernel_connect(sock,
- (struct sockaddr *)&ip6_addr,
+ (struct sockaddr_unsized *)&ip6_addr,
sizeof(ip6_addr), 0);
if (err < 0)
goto out;
@@ -1538,7 +1538,7 @@ static int l2tp_tunnel_sock_create(struct net *net,
ip_addr.l2tp_family = AF_INET;
ip_addr.l2tp_addr = cfg->peer_ip;
ip_addr.l2tp_conn_id = peer_tunnel_id;
- err = kernel_connect(sock, (struct sockaddr *)&ip_addr,
+ err = kernel_connect(sock, (struct sockaddr_unsized *)&ip_addr,
sizeof(ip_addr), 0);
if (err < 0)
goto out;
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index 5e12e7ce17d8..ae4543d5597b 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -684,7 +684,7 @@ static struct l2tp_tunnel *pppol2tp_tunnel_get(struct net *net,
/* connect() handler. Attach a PPPoX socket to a tunnel UDP socket
*/
-static int pppol2tp_connect(struct socket *sock, struct sockaddr *uservaddr,
+static int pppol2tp_connect(struct socket *sock, struct sockaddr_unsized *uservaddr,
int sockaddr_len, int flags)
{
struct sock *sk = sock->sk;
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index e5bb0c0d708c..59d593bb5d18 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -477,7 +477,7 @@ static int llc_ui_shutdown(struct socket *sock, int how)
* This function will autobind if user did not previously call bind.
* Returns: 0 upon success, negative otherwise.
*/
-static int llc_ui_connect(struct socket *sock, struct sockaddr *uaddr,
+static int llc_ui_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addrlen, int flags)
{
struct sock *sk = sock->sk;
diff --git a/net/mctp/af_mctp.c b/net/mctp/af_mctp.c
index 5b1ef50637b7..209a963112e3 100644
--- a/net/mctp/af_mctp.c
+++ b/net/mctp/af_mctp.c
@@ -128,7 +128,7 @@ static int mctp_bind(struct socket *sock, struct sockaddr_unsized *addr, int add
/* Used to set a specific peer prior to bind. Not used for outbound
* connections (Tag Owner set) since MCTP is a datagram protocol.
*/
-static int mctp_connect(struct socket *sock, struct sockaddr *addr,
+static int mctp_connect(struct socket *sock, struct sockaddr_unsized *addr,
int addrlen, int flags)
{
struct sock *sk = sock->sk;
diff --git a/net/mctp/test/utils.c b/net/mctp/test/utils.c
index 953d41902771..35f6be814567 100644
--- a/net/mctp/test/utils.c
+++ b/net/mctp/test/utils.c
@@ -279,7 +279,7 @@ void mctp_test_bind_run(struct kunit *test,
addr.smctp_addr.s_addr = setup->peer_addr;
/* connect() type must match bind() type */
addr.smctp_type = setup->bind_type;
- rc = kernel_connect(*sock, (struct sockaddr *)&addr,
+ rc = kernel_connect(*sock, (struct sockaddr_unsized *)&addr,
sizeof(addr), 0);
KUNIT_EXPECT_EQ(test, rc, 0);
}
@@ -292,5 +292,6 @@ void mctp_test_bind_run(struct kunit *test,
addr.smctp_type = setup->bind_type;
*ret_bind_errno =
- kernel_bind(*sock, (struct sockaddr *)&addr, sizeof(addr));
+ kernel_bind(*sock, (struct sockaddr_unsized *)&addr,
+ sizeof(addr));
}
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index d90237bf433c..30961b3d1702 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -1680,7 +1680,7 @@ int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_pm_local *local,
sock_hold(ssk);
list_add_tail(&subflow->node, &msk->conn_list);
- err = kernel_connect(sf, (struct sockaddr *)&addr, addrlen, O_NONBLOCK);
+ err = kernel_connect(sf, (struct sockaddr_unsized *)&addr, addrlen, O_NONBLOCK);
if (err && err != -EINPROGRESS) {
MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_JOINSYNTXCONNECTERR);
pr_debug("msk=%p local=%d remote=%d connect error: %d\n",
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index d8c089ef387c..5a0c6f42bd8f 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -1501,7 +1501,7 @@ static int make_send_sock(struct netns_ipvs *ipvs, int id,
}
get_mcast_sockaddr(&mcast_addr, &salen, &ipvs->mcfg, id);
- result = kernel_connect(sock, (struct sockaddr *)&mcast_addr,
+ result = kernel_connect(sock, (struct sockaddr_unsized *)&mcast_addr,
salen, 0);
if (result < 0) {
pr_err("Error connecting to the multicast addr\n");
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 18490a56edd0..8e5151f0c6e4 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1054,7 +1054,7 @@ static int netlink_bind(struct socket *sock, struct sockaddr_unsized *addr,
return err;
}
-static int netlink_connect(struct socket *sock, struct sockaddr *addr,
+static int netlink_connect(struct socket *sock, struct sockaddr_unsized *addr,
int alen, int flags)
{
int err = 0;
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 33468124d53d..5ed1a71ceec1 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -632,8 +632,8 @@ static int nr_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr
return 0;
}
-static int nr_connect(struct socket *sock, struct sockaddr *uaddr,
- int addr_len, int flags)
+static int nr_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
+ int addr_len, int flags)
{
struct sock *sk = sock->sk;
struct nr_sock *nr = nr_sk(sk);
diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c
index 26e6ceb48a82..f1be1e84f665 100644
--- a/net/nfc/llcp_sock.c
+++ b/net/nfc/llcp_sock.c
@@ -648,7 +648,7 @@ static int llcp_sock_release(struct socket *sock)
return err;
}
-static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
+static int llcp_sock_connect(struct socket *sock, struct sockaddr_unsized *_addr,
int len, int flags)
{
struct sock *sk = sock->sk;
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index 5125392bb68e..b049022399ae 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -73,7 +73,7 @@ static int rawsock_release(struct socket *sock)
return 0;
}
-static int rawsock_connect(struct socket *sock, struct sockaddr *_addr,
+static int rawsock_connect(struct socket *sock, struct sockaddr_unsized *_addr,
int len, int flags)
{
struct sock *sk = sock->sk;
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index 478b02647733..9391378083a4 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -214,8 +214,8 @@ static int pn_socket_autobind(struct socket *sock)
return 0; /* socket was already bound */
}
-static int pn_socket_connect(struct socket *sock, struct sockaddr *addr,
- int len, int flags)
+static int pn_socket_connect(struct socket *sock, struct sockaddr_unsized *addr,
+ int len, int flags)
{
struct sock *sk = sock->sk;
struct pn_sock *pn = pn_sk(sk);
@@ -252,7 +252,7 @@ static int pn_socket_connect(struct socket *sock, struct sockaddr *addr,
pn->resource = pn_sockaddr_get_resource(spn);
sock->state = SS_CONNECTING;
- err = sk->sk_prot->connect(sk, addr, len);
+ err = sk->sk_prot->connect(sk, (struct sockaddr *)addr, len);
if (err) {
sock->state = SS_UNCONNECTED;
pn->dobject = 0;
diff --git a/net/qrtr/af_qrtr.c b/net/qrtr/af_qrtr.c
index 00bd3dd9f0f9..dab839f61ee9 100644
--- a/net/qrtr/af_qrtr.c
+++ b/net/qrtr/af_qrtr.c
@@ -1084,7 +1084,7 @@ static int qrtr_recvmsg(struct socket *sock, struct msghdr *msg,
return rc;
}
-static int qrtr_connect(struct socket *sock, struct sockaddr *saddr,
+static int qrtr_connect(struct socket *sock, struct sockaddr_unsized *saddr,
int len, int flags)
{
DECLARE_SOCKADDR(struct sockaddr_qrtr *, addr, saddr);
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c
index 4a7217fbeab6..b396c673dfaf 100644
--- a/net/rds/af_rds.c
+++ b/net/rds/af_rds.c
@@ -533,7 +533,7 @@ static int rds_getsockopt(struct socket *sock, int level, int optname,
}
-static int rds_connect(struct socket *sock, struct sockaddr *uaddr,
+static int rds_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags)
{
struct sock *sk = sock->sk;
diff --git a/net/rds/tcp_connect.c b/net/rds/tcp_connect.c
index 1eff3b03ab77..92891b0d224d 100644
--- a/net/rds/tcp_connect.c
+++ b/net/rds/tcp_connect.c
@@ -173,7 +173,7 @@ int rds_tcp_conn_path_connect(struct rds_conn_path *cp)
* own the socket
*/
rds_tcp_set_callbacks(sock, cp);
- ret = kernel_connect(sock, addr, addrlen, O_NONBLOCK);
+ ret = kernel_connect(sock, (struct sockaddr_unsized *)addr, addrlen, O_NONBLOCK);
rdsdebug("connect to address %pI6c returned %d\n", &conn->c_faddr, ret);
if (ret == -EINPROGRESS)
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 47369eab5aec..fd67494f2815 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -765,7 +765,8 @@ static int rose_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int ad
return err;
}
-static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags)
+static int rose_connect(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len,
+ int flags)
{
struct sock *sk = sock->sk;
struct rose_sock *rose = rose_sk(sk);
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 245f37a74394..0c2c68c4b07e 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -481,7 +481,7 @@ EXPORT_SYMBOL(rxrpc_kernel_set_notifications);
* - this just targets it at a specific destination; no actual connection
* negotiation takes place
*/
-static int rxrpc_connect(struct socket *sock, struct sockaddr *addr,
+static int rxrpc_connect(struct socket *sock, struct sockaddr_unsized *addr,
int addr_len, int flags)
{
struct sockaddr_rxrpc *srx = (struct sockaddr_rxrpc *)addr;
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index ac737e60829b..940abbced191 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4820,7 +4820,7 @@ static int sctp_connect(struct sock *sk, struct sockaddr *addr,
return err;
}
-int sctp_inet_connect(struct socket *sock, struct sockaddr *uaddr,
+int sctp_inet_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags)
{
if (addr_len < sizeof(uaddr->sa_family))
@@ -4829,7 +4829,7 @@ int sctp_inet_connect(struct socket *sock, struct sockaddr *uaddr,
if (uaddr->sa_family == AF_UNSPEC)
return -EOPNOTSUPP;
- return sctp_connect(sock->sk, uaddr, addr_len, flags);
+ return sctp_connect(sock->sk, (struct sockaddr *)uaddr, addr_len, flags);
}
/* Only called when shutdown a listening SCTP socket. */
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index be18ab08f15d..0ef3e16a8517 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -1642,7 +1642,7 @@ static void smc_connect_work(struct work_struct *work)
release_sock(&smc->sk);
}
-int smc_connect(struct socket *sock, struct sockaddr *addr,
+int smc_connect(struct socket *sock, struct sockaddr_unsized *addr,
int alen, int flags)
{
struct sock *sk = sock->sk;
@@ -1694,7 +1694,7 @@ int smc_connect(struct socket *sock, struct sockaddr *addr,
rc = -EALREADY;
goto out;
}
- rc = kernel_connect(smc->clcsock, addr, alen, flags);
+ rc = kernel_connect(smc->clcsock, (struct sockaddr_unsized *)addr, alen, flags);
if (rc && rc != -EINPROGRESS)
goto out;
diff --git a/net/socket.c b/net/socket.c
index cf046d0bb345..15b55f35979d 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2103,8 +2103,8 @@ int __sys_connect_file(struct file *file, struct sockaddr_storage *address,
if (err)
goto out;
- err = READ_ONCE(sock->ops)->connect(sock, (struct sockaddr *)address,
- addrlen, sock->file->f_flags | file_flags);
+ err = READ_ONCE(sock->ops)->connect(sock, (struct sockaddr_unsized *)address,
+ addrlen, sock->file->f_flags | file_flags);
out:
return err;
}
@@ -3666,14 +3666,14 @@ EXPORT_SYMBOL(kernel_accept);
* Returns 0 or an error code.
*/
-int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen,
+int kernel_connect(struct socket *sock, struct sockaddr_unsized *addr, int addrlen,
int flags)
{
struct sockaddr_storage address;
memcpy(&address, addr, addrlen);
- return READ_ONCE(sock->ops)->connect(sock, (struct sockaddr *)&address,
+ return READ_ONCE(sock->ops)->connect(sock, (struct sockaddr_unsized *)&address,
addrlen, flags);
}
EXPORT_SYMBOL(kernel_connect);
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 318ee24ad900..58442ae1c2da 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1474,7 +1474,7 @@ static int rpc_sockname(struct net *net, struct sockaddr *sap, size_t salen,
goto out_release;
}
- err = kernel_connect(sock, sap, salen, 0);
+ err = kernel_connect(sock, (struct sockaddr_unsized *)sap, salen, 0);
if (err < 0) {
dprintk("RPC: can't connect UDP socket (%d)\n", err);
goto out_release;
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 95732a45b059..2e1fe6013361 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2005,7 +2005,7 @@ static int xs_local_finish_connecting(struct rpc_xprt *xprt,
xs_stream_start_connect(transport);
- return kernel_connect(sock, xs_addr(xprt), xprt->addrlen, 0);
+ return kernel_connect(sock, (struct sockaddr_unsized *)xs_addr(xprt), xprt->addrlen, 0);
}
/**
@@ -2405,7 +2405,8 @@ static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
/* Tell the socket layer to start connecting... */
set_bit(XPRT_SOCK_CONNECTING, &transport->sock_state);
- return kernel_connect(sock, xs_addr(xprt), xprt->addrlen, O_NONBLOCK);
+ return kernel_connect(sock, (struct sockaddr_unsized *)xs_addr(xprt),
+ xprt->addrlen, O_NONBLOCK);
}
/**
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 3903a97ada7d..817b07d95a91 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -2565,7 +2565,7 @@ static bool tipc_sockaddr_is_sane(struct sockaddr_tipc *addr)
*
* Return: 0 on success, errno otherwise
*/
-static int tipc_connect(struct socket *sock, struct sockaddr *dest,
+static int tipc_connect(struct socket *sock, struct sockaddr_unsized *dest,
int destlen, int flags)
{
struct sock *sk = sock->sk;
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index bba202b1a740..1e374921d55a 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -844,7 +844,7 @@ static int unix_listen(struct socket *sock, int backlog)
static int unix_release(struct socket *);
static int unix_bind(struct socket *, struct sockaddr_unsized *, int);
-static int unix_stream_connect(struct socket *, struct sockaddr *,
+static int unix_stream_connect(struct socket *, struct sockaddr_unsized *,
int addr_len, int flags);
static int unix_socketpair(struct socket *, struct socket *);
static int unix_accept(struct socket *, struct socket *, struct proto_accept_arg *arg);
@@ -866,7 +866,7 @@ static int unix_dgram_sendmsg(struct socket *, struct msghdr *, size_t);
static int unix_dgram_recvmsg(struct socket *, struct msghdr *, size_t, int);
static int unix_read_skb(struct sock *sk, skb_read_actor_t recv_actor);
static int unix_stream_read_skb(struct sock *sk, skb_read_actor_t recv_actor);
-static int unix_dgram_connect(struct socket *, struct sockaddr *,
+static int unix_dgram_connect(struct socket *, struct sockaddr_unsized *,
int, int);
static int unix_seqpacket_sendmsg(struct socket *, struct msghdr *, size_t);
static int unix_seqpacket_recvmsg(struct socket *, struct msghdr *, size_t,
@@ -1503,7 +1503,7 @@ static void unix_state_double_unlock(struct sock *sk1, struct sock *sk2)
unix_state_unlock(sk2);
}
-static int unix_dgram_connect(struct socket *sock, struct sockaddr *addr,
+static int unix_dgram_connect(struct socket *sock, struct sockaddr_unsized *addr,
int alen, int flags)
{
struct sockaddr_un *sunaddr = (struct sockaddr_un *)addr;
@@ -1622,7 +1622,7 @@ static long unix_wait_for_peer(struct sock *other, long timeo)
return timeo;
}
-static int unix_stream_connect(struct socket *sock, struct sockaddr *uaddr,
+static int unix_stream_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags)
{
struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr;
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 0e5609e7284b..72bb6b7ed386 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -995,7 +995,7 @@ vsock_bind(struct socket *sock, struct sockaddr_unsized *addr, int addr_len)
sk = sock->sk;
- if (vsock_addr_cast((struct sockaddr *)addr, addr_len, &vm_addr) != 0)
+ if (vsock_addr_cast(addr, addr_len, &vm_addr) != 0)
return -EINVAL;
lock_sock(sk);
@@ -1328,7 +1328,7 @@ static int vsock_dgram_sendmsg(struct socket *sock, struct msghdr *msg,
}
static int vsock_dgram_connect(struct socket *sock,
- struct sockaddr *addr, int addr_len, int flags)
+ struct sockaddr_unsized *addr, int addr_len, int flags)
{
int err;
struct sock *sk;
@@ -1528,7 +1528,7 @@ static void vsock_connect_timeout(struct work_struct *work)
sock_put(sk);
}
-static int vsock_connect(struct socket *sock, struct sockaddr *addr,
+static int vsock_connect(struct socket *sock, struct sockaddr_unsized *addr,
int addr_len, int flags)
{
int err;
diff --git a/net/vmw_vsock/vsock_addr.c b/net/vmw_vsock/vsock_addr.c
index 223b9660a759..a986aa6fff9b 100644
--- a/net/vmw_vsock/vsock_addr.c
+++ b/net/vmw_vsock/vsock_addr.c
@@ -57,7 +57,7 @@ bool vsock_addr_equals_addr(const struct sockaddr_vm *addr,
}
EXPORT_SYMBOL_GPL(vsock_addr_equals_addr);
-int vsock_addr_cast(const struct sockaddr *addr,
+int vsock_addr_cast(const struct sockaddr_unsized *addr,
size_t len, struct sockaddr_vm **out_addr)
{
if (len < sizeof(**out_addr))
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index ca8006d8f792..af8762b24039 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -743,7 +743,7 @@ static int x25_wait_for_connection_establishment(struct sock *sk)
return rc;
}
-static int x25_connect(struct socket *sock, struct sockaddr *uaddr,
+static int x25_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
int addr_len, int flags)
{
struct sock *sk = sock->sk;
diff --git a/samples/qmi/qmi_sample_client.c b/samples/qmi/qmi_sample_client.c
index b27d861f354f..d1814582319b 100644
--- a/samples/qmi/qmi_sample_client.c
+++ b/samples/qmi/qmi_sample_client.c
@@ -468,7 +468,7 @@ static int qmi_sample_probe(struct platform_device *pdev)
return ret;
sq = dev_get_platdata(&pdev->dev);
- ret = kernel_connect(sample->qmi.sock, (struct sockaddr *)sq,
+ ret = kernel_connect(sample->qmi.sock, (struct sockaddr_unsized *)sq,
sizeof(*sq), 0);
if (ret < 0) {
pr_err("failed to connect to remote service port\n");
diff --git a/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c b/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c
index 0497b5dea25c..8eeebaa951f0 100644
--- a/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c
+++ b/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c
@@ -900,7 +900,7 @@ __bpf_kfunc int bpf_kfunc_call_kernel_connect(struct addr_args *args)
goto out;
}
- err = kernel_connect(sock, (struct sockaddr *)&args->addr,
+ err = kernel_connect(sock, (struct sockaddr_unsized *)&args->addr,
args->addrlen, 0);
out:
mutex_unlock(&sock_lock);
--
2.34.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH net-next v5 4/8] net: Remove struct sockaddr from net.h
2025-11-04 0:26 [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized Kees Cook
` (2 preceding siblings ...)
2025-11-04 0:26 ` [PATCH net-next v5 3/8] net: Convert proto_ops connect() " Kees Cook
@ 2025-11-04 0:26 ` Kees Cook
2025-11-04 0:26 ` [PATCH net-next v5 5/8] net: Convert proto callbacks from sockaddr to sockaddr_unsized Kees Cook
` (4 subsequent siblings)
8 siblings, 0 replies; 12+ messages in thread
From: Kees Cook @ 2025-11-04 0:26 UTC (permalink / raw)
To: Paolo Abeni
Cc: Kees Cook, Jakub Kicinski, Gustavo A. R. Silva,
Alexei Starovoitov, Daniel Borkmann, John Fastabend,
David S. Miller, Eric Dumazet, Simon Horman, Kuniyuki Iwashima,
Willem de Bruijn, netdev, linux-kernel, bpf, linux-hardening
Now that struct sockaddr is no longer used by net.h, remove it.
Signed-off-by: Kees Cook <kees@kernel.org>
---
include/linux/net.h | 1 -
1 file changed, 1 deletion(-)
diff --git a/include/linux/net.h b/include/linux/net.h
index db6bc997ca5b..f58b38ab37f8 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -148,7 +148,6 @@ typedef struct {
struct vm_area_struct;
struct page;
-struct sockaddr;
struct msghdr;
struct module;
struct sk_buff;
--
2.34.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH net-next v5 5/8] net: Convert proto callbacks from sockaddr to sockaddr_unsized
2025-11-04 0:26 [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized Kees Cook
` (3 preceding siblings ...)
2025-11-04 0:26 ` [PATCH net-next v5 4/8] net: Remove struct sockaddr from net.h Kees Cook
@ 2025-11-04 0:26 ` Kees Cook
2025-11-04 0:26 ` [PATCH net-next v5 6/8] bpf: Convert cgroup sockaddr filters to use sockaddr_unsized consistently Kees Cook
` (3 subsequent siblings)
8 siblings, 0 replies; 12+ messages in thread
From: Kees Cook @ 2025-11-04 0:26 UTC (permalink / raw)
To: Paolo Abeni
Cc: Kees Cook, Jakub Kicinski, Gustavo A. R. Silva,
Alexei Starovoitov, Daniel Borkmann, John Fastabend,
David S. Miller, Eric Dumazet, Simon Horman, Kuniyuki Iwashima,
Willem de Bruijn, netdev, linux-kernel, bpf, linux-hardening
Convert struct proto pre_connect(), connect(), bind(), and bind_add()
callback function prototypes from struct sockaddr to struct sockaddr_unsized.
This does not change per-implementation use of sockaddr for passing around
an arbitrarily sized sockaddr struct. Those will be addressed in future
patches.
Additionally removes the no longer referenced struct sockaddr from
include/net/inet_common.h.
No binary changes expected.
Signed-off-by: Kees Cook <kees@kernel.org>
---
include/net/inet_common.h | 5 ++---
include/net/ip.h | 4 ++--
include/net/ipv6.h | 8 ++++----
include/net/ipv6_stubs.h | 2 +-
include/net/ping.h | 2 +-
include/net/sock.h | 10 +++++-----
include/net/tcp.h | 2 +-
include/net/udp.h | 2 +-
fs/dlm/lowcomms.c | 4 ++--
net/core/filter.c | 5 +++--
net/core/sock.c | 2 +-
net/ieee802154/socket.c | 12 ++++++------
net/ipv4/af_inet.c | 14 +++++++-------
net/ipv4/datagram.c | 4 ++--
net/ipv4/ping.c | 8 ++++----
net/ipv4/raw.c | 3 ++-
net/ipv4/tcp_ipv4.c | 4 ++--
net/ipv4/udp.c | 6 ++++--
net/ipv6/af_inet6.c | 6 +++---
net/ipv6/datagram.c | 8 ++++----
net/ipv6/ping.c | 2 +-
net/ipv6/raw.c | 3 ++-
net/ipv6/tcp_ipv6.c | 6 +++---
net/ipv6/udp.c | 5 +++--
net/l2tp/l2tp_ip.c | 6 ++++--
net/l2tp/l2tp_ip6.c | 5 +++--
net/mptcp/pm_kernel.c | 4 ++--
net/mptcp/protocol.c | 7 ++++---
net/phonet/pep.c | 3 ++-
net/phonet/socket.c | 4 ++--
net/sctp/socket.c | 9 +++++----
31 files changed, 88 insertions(+), 77 deletions(-)
diff --git a/include/net/inet_common.h b/include/net/inet_common.h
index ebafd96912bb..5dd2bf24449e 100644
--- a/include/net/inet_common.h
+++ b/include/net/inet_common.h
@@ -19,7 +19,6 @@ struct msghdr;
struct net;
struct page;
struct sock;
-struct sockaddr;
struct socket;
int inet_release(struct socket *sock);
@@ -43,7 +42,7 @@ int inet_listen(struct socket *sock, int backlog);
int __inet_listen_sk(struct sock *sk, int backlog);
void inet_sock_destruct(struct sock *sk);
int inet_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len);
-int inet_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len);
+int inet_bind_sk(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len);
/* Don't allocate port at this moment, defer to connect. */
#define BIND_FORCE_ADDRESS_NO_PORT (1 << 0)
/* Grab and release socket lock. */
@@ -52,7 +51,7 @@ int inet_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len);
#define BIND_FROM_BPF (1 << 2)
/* Skip CAP_NET_BIND_SERVICE check. */
#define BIND_NO_CAP_NET_BIND_SERVICE (1 << 3)
-int __inet_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
+int __inet_bind(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len,
u32 flags);
int inet_getname(struct socket *sock, struct sockaddr *uaddr,
int peer);
diff --git a/include/net/ip.h b/include/net/ip.h
index 380afb691c41..69d5cef46004 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -261,8 +261,8 @@ static inline u8 ip_sendmsg_scope(const struct inet_sock *inet,
}
/* datagram.c */
-int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len);
-int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len);
+int __ip4_datagram_connect(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len);
+int ip4_datagram_connect(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len);
void ip4_datagram_release_cb(struct sock *sk);
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 2188bad9a687..74fbf1ad8065 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -1188,10 +1188,10 @@ int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
int ipv6_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen);
-int __ip6_datagram_connect(struct sock *sk, struct sockaddr *addr,
+int __ip6_datagram_connect(struct sock *sk, struct sockaddr_unsized *addr,
int addr_len);
-int ip6_datagram_connect(struct sock *sk, struct sockaddr *addr, int addr_len);
-int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr *addr,
+int ip6_datagram_connect(struct sock *sk, struct sockaddr_unsized *addr, int addr_len);
+int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr_unsized *addr,
int addr_len);
int ip6_datagram_dst_update(struct sock *sk, bool fix_sk_saddr);
void ip6_datagram_release_cb(struct sock *sk);
@@ -1209,7 +1209,7 @@ void inet6_cleanup_sock(struct sock *sk);
void inet6_sock_destruct(struct sock *sk);
int inet6_release(struct socket *sock);
int inet6_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len);
-int inet6_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len);
+int inet6_bind_sk(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len);
int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
int peer);
int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
diff --git a/include/net/ipv6_stubs.h b/include/net/ipv6_stubs.h
index 8a3465c8c2c5..d3013e721b14 100644
--- a/include/net/ipv6_stubs.h
+++ b/include/net/ipv6_stubs.h
@@ -80,7 +80,7 @@ extern const struct ipv6_stub *ipv6_stub __read_mostly;
/* A stub used by bpf helpers. Similarly ugly as ipv6_stub */
struct ipv6_bpf_stub {
- int (*inet6_bind)(struct sock *sk, struct sockaddr *uaddr, int addr_len,
+ int (*inet6_bind)(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len,
u32 flags);
struct sock *(*udp6_lib_lookup)(const struct net *net,
const struct in6_addr *saddr, __be16 sport,
diff --git a/include/net/ping.h b/include/net/ping.h
index 9634b8800814..05bfd594a64c 100644
--- a/include/net/ping.h
+++ b/include/net/ping.h
@@ -58,7 +58,7 @@ void ping_unhash(struct sock *sk);
int ping_init_sock(struct sock *sk);
void ping_close(struct sock *sk, long timeout);
-int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len);
+int ping_bind(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len);
void ping_err(struct sk_buff *skb, int offset, u32 info);
int ping_getfrag(void *from, char *to, int offset, int fraglen, int odd,
struct sk_buff *);
diff --git a/include/net/sock.h b/include/net/sock.h
index 697118144dde..910c147364f9 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1274,10 +1274,10 @@ struct proto {
void (*close)(struct sock *sk,
long timeout);
int (*pre_connect)(struct sock *sk,
- struct sockaddr *uaddr,
+ struct sockaddr_unsized *uaddr,
int addr_len);
int (*connect)(struct sock *sk,
- struct sockaddr *uaddr,
+ struct sockaddr_unsized *uaddr,
int addr_len);
int (*disconnect)(struct sock *sk, int flags);
@@ -1306,9 +1306,9 @@ struct proto {
size_t len, int flags, int *addr_len);
void (*splice_eof)(struct socket *sock);
int (*bind)(struct sock *sk,
- struct sockaddr *addr, int addr_len);
+ struct sockaddr_unsized *addr, int addr_len);
int (*bind_add)(struct sock *sk,
- struct sockaddr *addr, int addr_len);
+ struct sockaddr_unsized *addr, int addr_len);
int (*backlog_rcv) (struct sock *sk,
struct sk_buff *skb);
@@ -3109,7 +3109,7 @@ void sock_set_reuseaddr(struct sock *sk);
void sock_set_reuseport(struct sock *sk);
void sock_set_sndtimeo(struct sock *sk, s64 secs);
-int sock_bind_add(struct sock *sk, struct sockaddr *addr, int addr_len);
+int sock_bind_add(struct sock *sk, struct sockaddr_unsized *addr, int addr_len);
int sock_get_timeout(long timeo, void *optval, bool old_timeval);
int sock_copy_user_timeval(struct __kernel_sock_timeval *tv,
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 4fd6d8d1230d..0aa1f07d036a 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -535,7 +535,7 @@ struct sock *tcp_v4_syn_recv_sock(const struct sock *sk, struct sk_buff *skb,
struct request_sock *req_unhash,
bool *own_req);
int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb);
-int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len);
+int tcp_v4_connect(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len);
int tcp_connect(struct sock *sk);
enum tcp_synack_type {
TCP_SYNACK_NORMAL,
diff --git a/include/net/udp.h b/include/net/udp.h
index cffedb3e40f2..a061d1b22ddc 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -424,7 +424,7 @@ void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst);
int udp_rcv(struct sk_buff *skb);
int udp_ioctl(struct sock *sk, int cmd, int *karg);
int udp_init_sock(struct sock *sk);
-int udp_pre_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len);
+int udp_pre_connect(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len);
int __udp_disconnect(struct sock *sk, int flags);
int udp_disconnect(struct sock *sk, int flags);
__poll_t udp_poll(struct file *file, struct socket *sock, poll_table *wait);
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index f832dafdaca8..b3958008ba3f 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -1126,7 +1126,7 @@ static void writequeue_entry_complete(struct writequeue_entry *e, int completed)
static int sctp_bind_addrs(struct socket *sock, __be16 port)
{
struct sockaddr_storage localaddr;
- struct sockaddr *addr = (struct sockaddr *)&localaddr;
+ struct sockaddr_unsized *addr = (struct sockaddr_unsized *)&localaddr;
int i, addr_len, result = 0;
for (i = 0; i < dlm_local_count; i++) {
@@ -1134,7 +1134,7 @@ static int sctp_bind_addrs(struct socket *sock, __be16 port)
make_sockaddr(&localaddr, port, &addr_len);
if (!i)
- result = kernel_bind(sock, (struct sockaddr_unsized *)addr, addr_len);
+ result = kernel_bind(sock, addr, addr_len);
else
result = sock_bind_add(sock->sk, addr, addr_len);
diff --git a/net/core/filter.c b/net/core/filter.c
index d180f14d2650..52721efba332 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -5979,7 +5979,7 @@ BPF_CALL_3(bpf_bind, struct bpf_sock_addr_kern *, ctx, struct sockaddr *, addr,
return err;
if (((struct sockaddr_in *)addr)->sin_port == htons(0))
flags |= BIND_FORCE_ADDRESS_NO_PORT;
- return __inet_bind(sk, addr, addr_len, flags);
+ return __inet_bind(sk, (struct sockaddr_unsized *)addr, addr_len, flags);
#if IS_ENABLED(CONFIG_IPV6)
} else if (addr->sa_family == AF_INET6) {
if (addr_len < SIN6_LEN_RFC2133)
@@ -5989,7 +5989,8 @@ BPF_CALL_3(bpf_bind, struct bpf_sock_addr_kern *, ctx, struct sockaddr *, addr,
/* ipv6_bpf_stub cannot be NULL, since it's called from
* bpf_cgroup_inet6_connect hook and ipv6 is already loaded
*/
- return ipv6_bpf_stub->inet6_bind(sk, addr, addr_len, flags);
+ return ipv6_bpf_stub->inet6_bind(sk, (struct sockaddr_unsized *)addr,
+ addr_len, flags);
#endif /* CONFIG_IPV6 */
}
#endif /* CONFIG_INET */
diff --git a/net/core/sock.c b/net/core/sock.c
index f97a0e958991..3b74fc71f51c 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -4395,7 +4395,7 @@ bool sk_busy_loop_end(void *p, unsigned long start_time)
EXPORT_SYMBOL(sk_busy_loop_end);
#endif /* CONFIG_NET_RX_BUSY_POLL */
-int sock_bind_add(struct sock *sk, struct sockaddr *addr, int addr_len)
+int sock_bind_add(struct sock *sk, struct sockaddr_unsized *addr, int addr_len)
{
if (!sk->sk_prot->bind_add)
return -EOPNOTSUPP;
diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index b93fd85f248a..e542fbe113e7 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -102,7 +102,7 @@ static int ieee802154_sock_bind(struct socket *sock, struct sockaddr_unsized *ua
struct sock *sk = sock->sk;
if (sk->sk_prot->bind)
- return sk->sk_prot->bind(sk, (struct sockaddr *)uaddr, addr_len);
+ return sk->sk_prot->bind(sk, uaddr, addr_len);
return sock_no_bind(sock, uaddr, addr_len);
}
@@ -118,7 +118,7 @@ static int ieee802154_sock_connect(struct socket *sock, struct sockaddr_unsized
if (uaddr->sa_family == AF_UNSPEC)
return sk->sk_prot->disconnect(sk, flags);
- return sk->sk_prot->connect(sk, (struct sockaddr *)uaddr, addr_len);
+ return sk->sk_prot->connect(sk, uaddr, addr_len);
}
static int ieee802154_dev_ioctl(struct sock *sk, struct ifreq __user *arg,
@@ -193,7 +193,7 @@ static void raw_close(struct sock *sk, long timeout)
sk_common_release(sk);
}
-static int raw_bind(struct sock *sk, struct sockaddr *_uaddr, int len)
+static int raw_bind(struct sock *sk, struct sockaddr_unsized *_uaddr, int len)
{
struct ieee802154_addr addr;
struct sockaddr_ieee802154 *uaddr = (struct sockaddr_ieee802154 *)_uaddr;
@@ -227,7 +227,7 @@ static int raw_bind(struct sock *sk, struct sockaddr *_uaddr, int len)
return err;
}
-static int raw_connect(struct sock *sk, struct sockaddr *uaddr,
+static int raw_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
int addr_len)
{
return -ENOTSUPP;
@@ -485,7 +485,7 @@ static void dgram_close(struct sock *sk, long timeout)
sk_common_release(sk);
}
-static int dgram_bind(struct sock *sk, struct sockaddr *uaddr, int len)
+static int dgram_bind(struct sock *sk, struct sockaddr_unsized *uaddr, int len)
{
struct sockaddr_ieee802154 *addr = (struct sockaddr_ieee802154 *)uaddr;
struct ieee802154_addr haddr;
@@ -563,7 +563,7 @@ static int dgram_ioctl(struct sock *sk, int cmd, int *karg)
}
/* FIXME: autobind */
-static int dgram_connect(struct sock *sk, struct sockaddr *uaddr,
+static int dgram_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
int len)
{
struct sockaddr_ieee802154 *addr = (struct sockaddr_ieee802154 *)uaddr;
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 0844de9ac6a4..d5ac089356eb 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -441,7 +441,7 @@ int inet_release(struct socket *sock)
}
EXPORT_SYMBOL(inet_release);
-int inet_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int inet_bind_sk(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len)
{
u32 flags = BIND_WITH_LOCK;
int err;
@@ -466,11 +466,11 @@ int inet_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len)
int inet_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
- return inet_bind_sk(sock->sk, (struct sockaddr *)uaddr, addr_len);
+ return inet_bind_sk(sock->sk, uaddr, addr_len);
}
EXPORT_SYMBOL(inet_bind);
-int __inet_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
+int __inet_bind(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len,
u32 flags)
{
struct sockaddr_in *addr = (struct sockaddr_in *)uaddr;
@@ -584,14 +584,14 @@ int inet_dgram_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
return prot->disconnect(sk, flags);
if (BPF_CGROUP_PRE_CONNECT_ENABLED(sk)) {
- err = prot->pre_connect(sk, (struct sockaddr *)uaddr, addr_len);
+ err = prot->pre_connect(sk, uaddr, addr_len);
if (err)
return err;
}
if (data_race(!inet_sk(sk)->inet_num) && inet_autobind(sk))
return -EAGAIN;
- return prot->connect(sk, (struct sockaddr *)uaddr, addr_len);
+ return prot->connect(sk, uaddr, addr_len);
}
EXPORT_SYMBOL(inet_dgram_connect);
@@ -671,12 +671,12 @@ int __inet_stream_connect(struct socket *sock, struct sockaddr_unsized *uaddr,
goto out;
if (BPF_CGROUP_PRE_CONNECT_ENABLED(sk)) {
- err = sk->sk_prot->pre_connect(sk, (struct sockaddr *)uaddr, addr_len);
+ err = sk->sk_prot->pre_connect(sk, uaddr, addr_len);
if (err)
goto out;
}
- err = sk->sk_prot->connect(sk, (struct sockaddr *)uaddr, addr_len);
+ err = sk->sk_prot->connect(sk, uaddr, addr_len);
if (err < 0)
goto out;
diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c
index c2b2cda1a7e5..1614593b6d72 100644
--- a/net/ipv4/datagram.c
+++ b/net/ipv4/datagram.c
@@ -16,7 +16,7 @@
#include <net/tcp_states.h>
#include <net/sock_reuseport.h>
-int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int __ip4_datagram_connect(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len)
{
struct inet_sock *inet = inet_sk(sk);
struct sockaddr_in *usin = (struct sockaddr_in *) uaddr;
@@ -84,7 +84,7 @@ int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len
}
EXPORT_SYMBOL(__ip4_datagram_connect);
-int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int ip4_datagram_connect(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len)
{
int res;
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 5321c5801c64..ad56588107cc 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -286,7 +286,7 @@ void ping_close(struct sock *sk, long timeout)
}
EXPORT_IPV6_MOD_GPL(ping_close);
-static int ping_pre_connect(struct sock *sk, struct sockaddr *uaddr,
+static int ping_pre_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
int addr_len)
{
/* This check is replicated from __ip4_datagram_connect() and
@@ -301,7 +301,7 @@ static int ping_pre_connect(struct sock *sk, struct sockaddr *uaddr,
/* Checks the bind address and possibly modifies sk->sk_bound_dev_if. */
static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,
- struct sockaddr *uaddr, int addr_len)
+ struct sockaddr_unsized *uaddr, int addr_len)
{
struct net *net = sock_net(sk);
if (sk->sk_family == AF_INET) {
@@ -387,7 +387,7 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,
return 0;
}
-static void ping_set_saddr(struct sock *sk, struct sockaddr *saddr)
+static void ping_set_saddr(struct sock *sk, struct sockaddr_unsized *saddr)
{
if (saddr->sa_family == AF_INET) {
struct inet_sock *isk = inet_sk(sk);
@@ -407,7 +407,7 @@ static void ping_set_saddr(struct sock *sk, struct sockaddr *saddr)
* Moreover, we don't allow binding to multi- and broadcast addresses.
*/
-int ping_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int ping_bind(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len)
{
struct inet_sock *isk = inet_sk(sk);
unsigned short snum;
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index d54ebb7df966..5998c4cc6f47 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -697,7 +697,8 @@ static void raw_destroy(struct sock *sk)
}
/* This gets rid of all the nasties in af_inet. -DaveM */
-static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+static int raw_bind(struct sock *sk, struct sockaddr_unsized *uaddr,
+ int addr_len)
{
struct inet_sock *inet = inet_sk(sk);
struct sockaddr_in *addr = (struct sockaddr_in *) uaddr;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 40a76da5364a..b7526a7888cb 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -205,7 +205,7 @@ int tcp_twsk_unique(struct sock *sk, struct sock *sktw, void *twp)
}
EXPORT_IPV6_MOD_GPL(tcp_twsk_unique);
-static int tcp_v4_pre_connect(struct sock *sk, struct sockaddr *uaddr,
+static int tcp_v4_pre_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
int addr_len)
{
/* This check is replicated from tcp_v4_connect() and intended to
@@ -221,7 +221,7 @@ static int tcp_v4_pre_connect(struct sock *sk, struct sockaddr *uaddr,
}
/* This will initiate an outgoing connection. */
-int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int tcp_v4_connect(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len)
{
struct sockaddr_in *usin = (struct sockaddr_in *)uaddr;
struct inet_timewait_death_row *tcp_death_row;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 30dfbf73729d..ffe074cb5865 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2159,7 +2159,8 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int flags,
goto try_again;
}
-int udp_pre_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int udp_pre_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
+ int addr_len)
{
/* This check is replicated from __ip4_datagram_connect() and
* intended to prevent BPF program called below from accessing bytes
@@ -2172,7 +2173,8 @@ int udp_pre_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
}
EXPORT_IPV6_MOD(udp_pre_connect);
-static int udp_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+static int udp_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
+ int addr_len)
{
int res;
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index c92d27e35fbc..b705751eb73c 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -277,7 +277,7 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol,
goto out;
}
-static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
+static int __inet6_bind(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len,
u32 flags)
{
struct sockaddr_in6 *addr = (struct sockaddr_in6 *)uaddr;
@@ -438,7 +438,7 @@ static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
goto out;
}
-int inet6_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int inet6_bind_sk(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len)
{
u32 flags = BIND_WITH_LOCK;
const struct proto *prot;
@@ -467,7 +467,7 @@ int inet6_bind_sk(struct sock *sk, struct sockaddr *uaddr, int addr_len)
/* bind for INET6 API */
int inet6_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int addr_len)
{
- return inet6_bind_sk(sock->sk, (struct sockaddr *)uaddr, addr_len);
+ return inet6_bind_sk(sock->sk, uaddr, addr_len);
}
EXPORT_SYMBOL(inet6_bind);
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 33ebe93d80e3..83e03176819c 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -138,7 +138,7 @@ void ip6_datagram_release_cb(struct sock *sk)
}
EXPORT_SYMBOL_GPL(ip6_datagram_release_cb);
-int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr,
+int __ip6_datagram_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
int addr_len)
{
struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr;
@@ -194,7 +194,7 @@ int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr,
sin.sin_port = usin->sin6_port;
err = __ip4_datagram_connect(sk,
- (struct sockaddr *) &sin,
+ (struct sockaddr_unsized *)&sin,
sizeof(sin));
ipv4_connected:
@@ -271,7 +271,7 @@ int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr,
}
EXPORT_SYMBOL_GPL(__ip6_datagram_connect);
-int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int ip6_datagram_connect(struct sock *sk, struct sockaddr_unsized *uaddr, int addr_len)
{
int res;
@@ -282,7 +282,7 @@ int ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
}
EXPORT_SYMBOL_GPL(ip6_datagram_connect);
-int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr *uaddr,
+int ip6_datagram_connect_v6_only(struct sock *sk, struct sockaddr_unsized *uaddr,
int addr_len)
{
DECLARE_SOCKADDR(struct sockaddr_in6 *, sin6, uaddr);
diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
index d7a2cdaa2631..e4afc651731a 100644
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -45,7 +45,7 @@ static int dummy_ipv6_chk_addr(struct net *net, const struct in6_addr *addr,
return 0;
}
-static int ping_v6_pre_connect(struct sock *sk, struct sockaddr *uaddr,
+static int ping_v6_pre_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
int addr_len)
{
/* This check is replicated from __ip6_datagram_connect() and
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index e369f54844dd..b4cd05dba9b6 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -214,7 +214,8 @@ bool raw6_local_deliver(struct sk_buff *skb, int nexthdr)
}
/* This cleans up af_inet6 a bit. -DaveM */
-static int rawv6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+static int rawv6_bind(struct sock *sk, struct sockaddr_unsized *uaddr,
+ int addr_len)
{
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 06eb90e4078e..7df21c1cba21 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -118,7 +118,7 @@ static u32 tcp_v6_init_ts_off(const struct net *net, const struct sk_buff *skb)
ipv6_hdr(skb)->saddr.s6_addr32);
}
-static int tcp_v6_pre_connect(struct sock *sk, struct sockaddr *uaddr,
+static int tcp_v6_pre_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
int addr_len)
{
/* This check is replicated from tcp_v6_connect() and intended to
@@ -133,7 +133,7 @@ static int tcp_v6_pre_connect(struct sock *sk, struct sockaddr *uaddr,
return BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr, &addr_len);
}
-static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
+static int tcp_v6_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
int addr_len)
{
struct sockaddr_in6 *usin = (struct sockaddr_in6 *) uaddr;
@@ -238,7 +238,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
tp->af_specific = &tcp_sock_ipv6_mapped_specific;
#endif
- err = tcp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
+ err = tcp_v4_connect(sk, (struct sockaddr_unsized *)&sin, sizeof(sin));
if (err) {
icsk->icsk_ext_hdr_len = exthdrlen;
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 813a2ba75824..794c13674e8a 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1282,7 +1282,7 @@ static void udp_v6_flush_pending_frames(struct sock *sk)
}
}
-static int udpv6_pre_connect(struct sock *sk, struct sockaddr *uaddr,
+static int udpv6_pre_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
int addr_len)
{
if (addr_len < offsetofend(struct sockaddr, sa_family))
@@ -1303,7 +1303,8 @@ static int udpv6_pre_connect(struct sock *sk, struct sockaddr *uaddr,
return BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr, &addr_len);
}
-static int udpv6_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+static int udpv6_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
+ int addr_len)
{
int res;
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 29795d2839e8..cac1ff59cb83 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -267,7 +267,8 @@ static void l2tp_ip_destroy_sock(struct sock *sk)
}
}
-static int l2tp_ip_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+static int l2tp_ip_bind(struct sock *sk, struct sockaddr_unsized *uaddr,
+ int addr_len)
{
struct inet_sock *inet = inet_sk(sk);
struct sockaddr_l2tpip *addr = (struct sockaddr_l2tpip *)uaddr;
@@ -328,7 +329,8 @@ static int l2tp_ip_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return ret;
}
-static int l2tp_ip_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+static int l2tp_ip_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
+ int addr_len)
{
struct sockaddr_l2tpip *lsa = (struct sockaddr_l2tpip *)uaddr;
struct l2tp_ip_net *pn = l2tp_ip_pernet(sock_net(sk));
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
index ea232f338dcb..05a396ba6a3e 100644
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@@ -280,7 +280,8 @@ static void l2tp_ip6_destroy_sock(struct sock *sk)
}
}
-static int l2tp_ip6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+static int l2tp_ip6_bind(struct sock *sk, struct sockaddr_unsized *uaddr,
+ int addr_len)
{
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
@@ -383,7 +384,7 @@ static int l2tp_ip6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return err;
}
-static int l2tp_ip6_connect(struct sock *sk, struct sockaddr *uaddr,
+static int l2tp_ip6_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
int addr_len)
{
struct sockaddr_l2tpip6 *lsa = (struct sockaddr_l2tpip6 *)uaddr;
diff --git a/net/mptcp/pm_kernel.c b/net/mptcp/pm_kernel.c
index 2ae95476dba3..01e9f2e5736d 100644
--- a/net/mptcp/pm_kernel.c
+++ b/net/mptcp/pm_kernel.c
@@ -855,10 +855,10 @@ static int mptcp_pm_nl_create_listen_socket(struct sock *sk,
addrlen = sizeof(struct sockaddr_in6);
#endif
if (ssk->sk_family == AF_INET)
- err = inet_bind_sk(ssk, (struct sockaddr *)&addr, addrlen);
+ err = inet_bind_sk(ssk, (struct sockaddr_unsized *)&addr, addrlen);
#if IS_ENABLED(CONFIG_MPTCP_IPV6)
else if (ssk->sk_family == AF_INET6)
- err = inet6_bind_sk(ssk, (struct sockaddr *)&addr, addrlen);
+ err = inet6_bind_sk(ssk, (struct sockaddr_unsized *)&addr, addrlen);
#endif
if (err)
return err;
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 53e2b095dfb1..4cd5df01446e 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -3746,7 +3746,8 @@ static int mptcp_ioctl(struct sock *sk, int cmd, int *karg)
return 0;
}
-static int mptcp_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+static int mptcp_connect(struct sock *sk, struct sockaddr_unsized *uaddr,
+ int addr_len)
{
struct mptcp_subflow_context *subflow;
struct mptcp_sock *msk = mptcp_sk(sk);
@@ -3870,10 +3871,10 @@ static int mptcp_bind(struct socket *sock, struct sockaddr_unsized *uaddr, int a
}
if (sk->sk_family == AF_INET)
- err = inet_bind_sk(ssk, (struct sockaddr *)uaddr, addr_len);
+ err = inet_bind_sk(ssk, uaddr, addr_len);
#if IS_ENABLED(CONFIG_MPTCP_IPV6)
else if (sk->sk_family == AF_INET6)
- err = inet6_bind_sk(ssk, (struct sockaddr *)uaddr, addr_len);
+ err = inet6_bind_sk(ssk, uaddr, addr_len);
#endif
if (!err)
mptcp_copy_inaddrs(sk, ssk);
diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index 4db564d9d522..120e711ea78c 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -882,7 +882,8 @@ static struct sock *pep_sock_accept(struct sock *sk,
return newsk;
}
-static int pep_sock_connect(struct sock *sk, struct sockaddr *addr, int len)
+static int pep_sock_connect(struct sock *sk, struct sockaddr_unsized *addr,
+ int len)
{
struct pep_sock *pn = pep_sk(sk);
int err;
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index 9391378083a4..4423d483c630 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -163,7 +163,7 @@ static int pn_socket_bind(struct socket *sock, struct sockaddr_unsized *addr, in
u8 saddr;
if (sk->sk_prot->bind)
- return sk->sk_prot->bind(sk, (struct sockaddr *)addr, len);
+ return sk->sk_prot->bind(sk, addr, len);
if (len < sizeof(struct sockaddr_pn))
return -EINVAL;
@@ -252,7 +252,7 @@ static int pn_socket_connect(struct socket *sock, struct sockaddr_unsized *addr,
pn->resource = pn_sockaddr_get_resource(spn);
sock->state = SS_CONNECTING;
- err = sk->sk_prot->connect(sk, (struct sockaddr *)addr, len);
+ err = sk->sk_prot->connect(sk, addr, len);
if (err) {
sock->state = SS_UNCONNECTED;
pn->dobject = 0;
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 940abbced191..38d2932acebf 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -306,7 +306,8 @@ static struct sctp_transport *sctp_addr_id2transport(struct sock *sk,
* sockaddr_in6 [RFC 2553]),
* addr_len - the size of the address structure.
*/
-static int sctp_bind(struct sock *sk, struct sockaddr *addr, int addr_len)
+static int sctp_bind(struct sock *sk, struct sockaddr_unsized *addr,
+ int addr_len)
{
int retval = 0;
@@ -1053,13 +1054,13 @@ static int sctp_setsockopt_bindx(struct sock *sk, struct sockaddr *addrs,
}
}
-static int sctp_bind_add(struct sock *sk, struct sockaddr *addrs,
- int addrlen)
+static int sctp_bind_add(struct sock *sk, struct sockaddr_unsized *addrs,
+ int addrlen)
{
int err;
lock_sock(sk);
- err = sctp_setsockopt_bindx(sk, addrs, addrlen, SCTP_BINDX_ADD_ADDR);
+ err = sctp_setsockopt_bindx(sk, (struct sockaddr *)addrs, addrlen, SCTP_BINDX_ADD_ADDR);
release_sock(sk);
return err;
}
--
2.34.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH net-next v5 6/8] bpf: Convert cgroup sockaddr filters to use sockaddr_unsized consistently
2025-11-04 0:26 [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized Kees Cook
` (4 preceding siblings ...)
2025-11-04 0:26 ` [PATCH net-next v5 5/8] net: Convert proto callbacks from sockaddr to sockaddr_unsized Kees Cook
@ 2025-11-04 0:26 ` Kees Cook
2025-11-04 0:26 ` [PATCH net-next v5 7/8] bpf: Convert bpf_sock_addr_kern "uaddr" to sockaddr_unsized Kees Cook
` (2 subsequent siblings)
8 siblings, 0 replies; 12+ messages in thread
From: Kees Cook @ 2025-11-04 0:26 UTC (permalink / raw)
To: Paolo Abeni
Cc: Kees Cook, Jakub Kicinski, Gustavo A. R. Silva,
Alexei Starovoitov, Daniel Borkmann, John Fastabend,
David S. Miller, Eric Dumazet, Simon Horman, Kuniyuki Iwashima,
Willem de Bruijn, netdev, linux-kernel, bpf, linux-hardening
Update BPF cgroup sockaddr filtering infrastructure to use sockaddr_unsized
consistently throughout the call chain, removing redundant explicit casts
from callers.
No binary changes expected.
Signed-off-by: Kees Cook <kees@kernel.org>
---
include/linux/bpf-cgroup.h | 17 ++++++++++-------
kernel/bpf/cgroup.c | 4 ++--
net/ipv4/af_inet.c | 4 ++--
3 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h
index a7fb4f46974f..d1eb5c7729cb 100644
--- a/include/linux/bpf-cgroup.h
+++ b/include/linux/bpf-cgroup.h
@@ -120,7 +120,7 @@ int __cgroup_bpf_run_filter_sk(struct sock *sk,
enum cgroup_bpf_attach_type atype);
int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
- struct sockaddr *uaddr,
+ struct sockaddr_unsized *uaddr,
int *uaddrlen,
enum cgroup_bpf_attach_type atype,
void *t_ctx,
@@ -238,8 +238,9 @@ static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
({ \
int __ret = 0; \
if (cgroup_bpf_enabled(atype)) \
- __ret = __cgroup_bpf_run_filter_sock_addr(sk, (struct sockaddr *)uaddr, uaddrlen, \
- atype, NULL, NULL); \
+ __ret = __cgroup_bpf_run_filter_sock_addr(sk, \
+ (struct sockaddr_unsized *)uaddr, uaddrlen, \
+ atype, NULL, NULL); \
__ret; \
})
@@ -248,8 +249,9 @@ static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
int __ret = 0; \
if (cgroup_bpf_enabled(atype)) { \
lock_sock(sk); \
- __ret = __cgroup_bpf_run_filter_sock_addr(sk, (struct sockaddr *)uaddr, uaddrlen, \
- atype, t_ctx, NULL); \
+ __ret = __cgroup_bpf_run_filter_sock_addr(sk, \
+ (struct sockaddr_unsized *)uaddr, uaddrlen, \
+ atype, t_ctx, NULL); \
release_sock(sk); \
} \
__ret; \
@@ -266,8 +268,9 @@ static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
int __ret = 0; \
if (cgroup_bpf_enabled(atype)) { \
lock_sock(sk); \
- __ret = __cgroup_bpf_run_filter_sock_addr(sk, (struct sockaddr *)uaddr, uaddrlen, \
- atype, NULL, &__flags); \
+ __ret = __cgroup_bpf_run_filter_sock_addr(sk, \
+ (struct sockaddr_unsized *)uaddr, uaddrlen, \
+ atype, NULL, &__flags); \
release_sock(sk); \
if (__flags & BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE) \
*bind_flags |= BIND_NO_CAP_NET_BIND_SERVICE; \
diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
index 248f517d66d0..497aedc9afa1 100644
--- a/kernel/bpf/cgroup.c
+++ b/kernel/bpf/cgroup.c
@@ -1665,7 +1665,7 @@ EXPORT_SYMBOL(__cgroup_bpf_run_filter_sk);
* returned value != 1 during execution. In all other cases, 0 is returned.
*/
int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
- struct sockaddr *uaddr,
+ struct sockaddr_unsized *uaddr,
int *uaddrlen,
enum cgroup_bpf_attach_type atype,
void *t_ctx,
@@ -1673,7 +1673,7 @@ int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
{
struct bpf_sock_addr_kern ctx = {
.sk = sk,
- .uaddr = uaddr,
+ .uaddr = (struct sockaddr *)uaddr,
.t_ctx = t_ctx,
};
struct sockaddr_storage unspec;
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index d5ac089356eb..a31b94ce8968 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -834,7 +834,7 @@ int inet_getname(struct socket *sock, struct sockaddr *uaddr,
}
sin->sin_port = inet->inet_dport;
sin->sin_addr.s_addr = inet->inet_daddr;
- BPF_CGROUP_RUN_SA_PROG(sk, (struct sockaddr *)sin, &sin_addr_len,
+ BPF_CGROUP_RUN_SA_PROG(sk, sin, &sin_addr_len,
CGROUP_INET4_GETPEERNAME);
} else {
__be32 addr = inet->inet_rcv_saddr;
@@ -842,7 +842,7 @@ int inet_getname(struct socket *sock, struct sockaddr *uaddr,
addr = inet->inet_saddr;
sin->sin_port = inet->inet_sport;
sin->sin_addr.s_addr = addr;
- BPF_CGROUP_RUN_SA_PROG(sk, (struct sockaddr *)sin, &sin_addr_len,
+ BPF_CGROUP_RUN_SA_PROG(sk, sin, &sin_addr_len,
CGROUP_INET4_GETSOCKNAME);
}
release_sock(sk);
--
2.34.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH net-next v5 7/8] bpf: Convert bpf_sock_addr_kern "uaddr" to sockaddr_unsized
2025-11-04 0:26 [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized Kees Cook
` (5 preceding siblings ...)
2025-11-04 0:26 ` [PATCH net-next v5 6/8] bpf: Convert cgroup sockaddr filters to use sockaddr_unsized consistently Kees Cook
@ 2025-11-04 0:26 ` Kees Cook
2025-11-04 0:26 ` [PATCH net-next v5 8/8] net: Convert struct sockaddr to fixed-size "sa_data[14]" Kees Cook
2025-11-05 3:40 ` [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized patchwork-bot+netdevbpf
8 siblings, 0 replies; 12+ messages in thread
From: Kees Cook @ 2025-11-04 0:26 UTC (permalink / raw)
To: Paolo Abeni
Cc: Kees Cook, Jakub Kicinski, Gustavo A. R. Silva,
Alexei Starovoitov, Daniel Borkmann, John Fastabend,
David S. Miller, Eric Dumazet, Simon Horman, Kuniyuki Iwashima,
Willem de Bruijn, netdev, linux-kernel, bpf, linux-hardening
Change struct bpf_sock_addr_kern to use sockaddr_unsized for the "uaddr"
field instead of sockaddr. This improves type safety in the BPF cgroup
socket address filtering code.
The casting in __cgroup_bpf_run_filter_sock_addr() is updated to match the
new type, removing an unnecessary cast in the initialization and updating
the conditional assignment to use the appropriate sockaddr_unsized cast.
Additionally rename the "unspec" variable to "storage" to better align
with its usage.
No binary changes expected.
Signed-off-by: Kees Cook <kees@kernel.org>
---
include/linux/filter.h | 2 +-
kernel/bpf/cgroup.c | 8 ++++----
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/include/linux/filter.h b/include/linux/filter.h
index f5c859b8131a..e116de7edc58 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -1515,7 +1515,7 @@ static inline int bpf_tell_extensions(void)
struct bpf_sock_addr_kern {
struct sock *sk;
- struct sockaddr *uaddr;
+ struct sockaddr_unsized *uaddr;
/* Temporary "register" to make indirect stores to nested structures
* defined above. We need three registers to make such a store, but
* only two (src and dst) are available at convert_ctx_access time
diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
index 497aedc9afa1..69988af44b37 100644
--- a/kernel/bpf/cgroup.c
+++ b/kernel/bpf/cgroup.c
@@ -1673,10 +1673,10 @@ int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
{
struct bpf_sock_addr_kern ctx = {
.sk = sk,
- .uaddr = (struct sockaddr *)uaddr,
+ .uaddr = uaddr,
.t_ctx = t_ctx,
};
- struct sockaddr_storage unspec;
+ struct sockaddr_storage storage;
struct cgroup *cgrp;
int ret;
@@ -1688,8 +1688,8 @@ int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
return 0;
if (!ctx.uaddr) {
- memset(&unspec, 0, sizeof(unspec));
- ctx.uaddr = (struct sockaddr *)&unspec;
+ memset(&storage, 0, sizeof(storage));
+ ctx.uaddr = (struct sockaddr_unsized *)&storage;
ctx.uaddrlen = 0;
} else {
ctx.uaddrlen = *uaddrlen;
--
2.34.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH net-next v5 8/8] net: Convert struct sockaddr to fixed-size "sa_data[14]"
2025-11-04 0:26 [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized Kees Cook
` (6 preceding siblings ...)
2025-11-04 0:26 ` [PATCH net-next v5 7/8] bpf: Convert bpf_sock_addr_kern "uaddr" to sockaddr_unsized Kees Cook
@ 2025-11-04 0:26 ` Kees Cook
2025-11-05 3:40 ` [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized patchwork-bot+netdevbpf
8 siblings, 0 replies; 12+ messages in thread
From: Kees Cook @ 2025-11-04 0:26 UTC (permalink / raw)
To: Paolo Abeni
Cc: Kees Cook, Gustavo A . R . Silva, Jakub Kicinski,
Alexei Starovoitov, Daniel Borkmann, John Fastabend,
David S. Miller, Eric Dumazet, Simon Horman, Kuniyuki Iwashima,
Willem de Bruijn, netdev, linux-kernel, bpf, linux-hardening
Revert struct sockaddr from flexible array to fixed 14-byte "sa_data",
to solve over 36,000 -Wflex-array-member-not-at-end warnings, since
struct sockaddr is embedded within many network structs.
With socket/proto sockaddr-based internal APIs switched to use struct
sockaddr_unsized, there should be no more uses of struct sockaddr that
depend on reading beyond the end of struct sockaddr::sa_data that might
trigger bounds checking.
Comparing an x86_64 "allyesconfig" vmlinux build before and after this
patch showed no new "ud1" instructions from CONFIG_UBSAN_BOUNDS nor any
new "field-spanning" memcpy CONFIG_FORTIFY_SOURCE instrumentations.
Cc: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Kees Cook <kees@kernel.org>
---
include/linux/socket.h | 6 ++----
tools/perf/trace/beauty/include/linux/socket.h | 5 +----
net/core/dev.c | 2 +-
net/core/dev_ioctl.c | 2 +-
net/ipv4/arp.c | 2 +-
net/packet/af_packet.c | 10 +++++-----
6 files changed, 11 insertions(+), 16 deletions(-)
diff --git a/include/linux/socket.h b/include/linux/socket.h
index 7b1a01be29da..944027f9765e 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -32,12 +32,10 @@ typedef __kernel_sa_family_t sa_family_t;
* 1003.1g requires sa_family_t and that sa_data is char.
*/
+/* Deprecated for in-kernel use. Use struct sockaddr_unsized instead. */
struct sockaddr {
sa_family_t sa_family; /* address family, AF_xxx */
- union {
- char sa_data_min[14]; /* Minimum 14 bytes of protocol address */
- DECLARE_FLEX_ARRAY(char, sa_data);
- };
+ char sa_data[14]; /* 14 bytes of protocol address */
};
/**
diff --git a/tools/perf/trace/beauty/include/linux/socket.h b/tools/perf/trace/beauty/include/linux/socket.h
index 3b262487ec06..77d7c59f5d8b 100644
--- a/tools/perf/trace/beauty/include/linux/socket.h
+++ b/tools/perf/trace/beauty/include/linux/socket.h
@@ -34,10 +34,7 @@ typedef __kernel_sa_family_t sa_family_t;
struct sockaddr {
sa_family_t sa_family; /* address family, AF_xxx */
- union {
- char sa_data_min[14]; /* Minimum 14 bytes of protocol address */
- DECLARE_FLEX_ARRAY(char, sa_data);
- };
+ char sa_data[14]; /* 14 bytes of protocol address */
};
struct linger {
diff --git a/net/core/dev.c b/net/core/dev.c
index 8e862a48e0a6..c38405dce744 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -9936,7 +9936,7 @@ DECLARE_RWSEM(dev_addr_sem);
/* "sa" is a true struct sockaddr with limited "sa_data" member. */
int netif_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name)
{
- size_t size = sizeof(sa->sa_data_min);
+ size_t size = sizeof(sa->sa_data);
struct net_device *dev;
int ret = 0;
diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index ad54b12d4b4c..b3ce0fb24a69 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -596,7 +596,7 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, void __user *data,
if (ifr->ifr_hwaddr.sa_family != dev->type)
return -EINVAL;
memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data,
- min(sizeof(ifr->ifr_hwaddr.sa_data_min),
+ min(sizeof(ifr->ifr_hwaddr.sa_data),
(size_t)dev->addr_len));
netdev_lock_ops(dev);
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index f3bfecf8a234..7f3863daaa40 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -1189,7 +1189,7 @@ static int arp_req_get(struct net *net, struct arpreq *r)
read_lock_bh(&neigh->lock);
memcpy(r->arp_ha.sa_data, neigh->ha,
- min(dev->addr_len, sizeof(r->arp_ha.sa_data_min)));
+ min(dev->addr_len, sizeof(r->arp_ha.sa_data)));
r->arp_flags = arp_state_to_flags(neigh);
read_unlock_bh(&neigh->lock);
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index fccad2a529cc..494d628d10a5 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -3284,7 +3284,7 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr_unsized *uaddr,
{
struct sock *sk = sock->sk;
struct sockaddr *sa = (struct sockaddr *)uaddr;
- char name[sizeof(sa->sa_data_min) + 1];
+ char name[sizeof(sa->sa_data) + 1];
/*
* Check legality
@@ -3295,8 +3295,8 @@ static int packet_bind_spkt(struct socket *sock, struct sockaddr_unsized *uaddr,
/* uaddr->sa_data comes from the userspace, it's not guaranteed to be
* zero-terminated.
*/
- memcpy(name, sa->sa_data, sizeof(sa->sa_data_min));
- name[sizeof(sa->sa_data_min)] = 0;
+ memcpy(name, sa->sa_data, sizeof(sa->sa_data));
+ name[sizeof(sa->sa_data)] = 0;
return packet_do_bind(sk, name, 0, 0);
}
@@ -3581,11 +3581,11 @@ static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr,
return -EOPNOTSUPP;
uaddr->sa_family = AF_PACKET;
- memset(uaddr->sa_data, 0, sizeof(uaddr->sa_data_min));
+ memset(uaddr->sa_data, 0, sizeof(uaddr->sa_data));
rcu_read_lock();
dev = dev_get_by_index_rcu(sock_net(sk), READ_ONCE(pkt_sk(sk)->ifindex));
if (dev)
- strscpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data_min));
+ strscpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data));
rcu_read_unlock();
return sizeof(*uaddr);
--
2.34.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* Re: [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized
2025-11-04 0:26 [PATCH net-next v5 0/8] net: Introduce struct sockaddr_unsized Kees Cook
` (7 preceding siblings ...)
2025-11-04 0:26 ` [PATCH net-next v5 8/8] net: Convert struct sockaddr to fixed-size "sa_data[14]" Kees Cook
@ 2025-11-05 3:40 ` patchwork-bot+netdevbpf
8 siblings, 0 replies; 12+ messages in thread
From: patchwork-bot+netdevbpf @ 2025-11-05 3:40 UTC (permalink / raw)
To: Kees Cook
Cc: pabeni, kuba, gustavo, ast, daniel, john.fastabend, davem,
edumazet, horms, kuniyu, willemb, netdev, linux-kernel, bpf,
linux-hardening
Hello:
This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:
On Mon, 3 Nov 2025 16:26:08 -0800 you wrote:
> Hi!
>
> v5: rebase and actually pick CORRECT base...
> v4: https://lore.kernel.org/all/20251029214355.work.602-kees@kernel.org/
> v3: https://lore.kernel.org/all/20251020212125.make.115-kees@kernel.org/
> v2: https://lore.kernel.org/all/20251014223349.it.173-kees@kernel.org/
> v1: https://lore.kernel.org/all/20250723230354.work.571-kees@kernel.org/
>
> [...]
Here is the summary with links:
- [net-next,v5,1/8] net: Add struct sockaddr_unsized for sockaddr of unknown length
https://git.kernel.org/netdev/net-next/c/bf33247a90d3
- [net-next,v5,2/8] net: Convert proto_ops bind() callbacks to use sockaddr_unsized
https://git.kernel.org/netdev/net-next/c/0e50474fa514
- [net-next,v5,3/8] net: Convert proto_ops connect() callbacks to use sockaddr_unsized
https://git.kernel.org/netdev/net-next/c/85cb0757d7e1
- [net-next,v5,4/8] net: Remove struct sockaddr from net.h
https://git.kernel.org/netdev/net-next/c/3d39d34146f2
- [net-next,v5,5/8] net: Convert proto callbacks from sockaddr to sockaddr_unsized
https://git.kernel.org/netdev/net-next/c/449f68f8fffa
- [net-next,v5,6/8] bpf: Convert cgroup sockaddr filters to use sockaddr_unsized consistently
https://git.kernel.org/netdev/net-next/c/8116d803e7f8
- [net-next,v5,7/8] bpf: Convert bpf_sock_addr_kern "uaddr" to sockaddr_unsized
https://git.kernel.org/netdev/net-next/c/c1a799eef62b
- [net-next,v5,8/8] net: Convert struct sockaddr to fixed-size "sa_data[14]"
https://git.kernel.org/netdev/net-next/c/2b5e9f9b7e41
You are awesome, thank you!
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