korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-23 11:04:44 +08:00
Code Issues Packages Projects Releases Wiki Activity

linux-can-fixes-for-5.12-20210329

Browse Source 
-----BEGIN PGP SIGNATURE-----
 
 iQFHBAABCgAxFiEEK3kIWJt9yTYMP3ehqclaivrt76kFAmBhh4cTHG1rbEBwZW5n
 dXRyb25peC5kZQAKCRCpyVqK+u3vqT0uCACG3TrFXLFVo3VB+EaMKttdjD+KlfnA
 zABhon47XEHuNaxfYRy9BUjwbz3ig6e0qYd3I23G02dQaLTFyoQmx5msquVS1LoW
 3H4D+VtWNdOspJn3N/cG+JJmPeZRON40EzFRFgKElg+IhanuxOox5IVtt68azNaj
 Kpx9+dlLla26P1xIFnrppfs0V19fHcr9nM1c+u5s2c1kuQyHgI2gNqZL6Ot+uGVv
 YyqQKQCQagXpTIM7Z1DC8ehclhpJABkwzQxWb8C6O6fldV3PVaJ8G9QXdjtCX/Jh
 4ZJR7LDFMQBIcUrQycyxw9rpIlyLGbIdgCSShcCDZMJE0xYsV19RbgUs
 =Ru5R
 -----END PGP SIGNATURE-----

Merge tag 'linux-can-fixes-for-5.12-20210329' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2021-03-29

this is a pull request of 3 patches for net/master.

The two patch are by Oliver Hartkopp. He fixes length check in the
proto_ops::getname callback for the CAN RAW, BCM and ISOTP protocols,
which were broken by the introduction of the J1939 protocol.

The last patch is by me and fixes the a BUILD_BUG_ON() check which
triggers on ARCH=arm with CONFIG_AEABI unset.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2021-03-29 13:31:18 -07:00
commit f4c848db16
4 changed files with 22 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/uapi/linux/can.h
View File

@ -113,7 +113,7 @@ struct can_frame {
*/
__u8 len;
__u8 can_dlc; /* deprecated */
};
} __attribute__((packed)); /* disable padding added in some ABIs */
__u8 __pad; /* padding */
__u8 __res0; /* reserved / padding */
__u8 len8_dlc; /* optional DLC for 8 byte payload length (9 .. 15) */

10
net/can/bcm.c
View File

@ -86,6 +86,8 @@ MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Oliver Hartkopp <oliver.hartkopp@volkswagen.de>");
MODULE_ALIAS("can-proto-2");
#define BCM_MIN_NAMELEN CAN_REQUIRED_SIZE(struct sockaddr_can, can_ifindex)
/*
* easy access to the first 64 bit of can(fd)_frame payload. cp->data is
* 64 bit aligned so the offset has to be multiples of 8 which is ensured
@ -1292,7 +1294,7 @@ static int bcm_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
/* no bound device as default => check msg_name */
DECLARE_SOCKADDR(struct sockaddr_can *, addr, msg->msg_name);
if (msg->msg_namelen < CAN_REQUIRED_SIZE(*addr, can_ifindex))
if (msg->msg_namelen < BCM_MIN_NAMELEN)
return -EINVAL;
if (addr->can_family != AF_CAN)
@ -1534,7 +1536,7 @@ static int bcm_connect(struct socket *sock, struct sockaddr *uaddr, int len,
struct net *net = sock_net(sk);
int ret = 0;
if (len < CAN_REQUIRED_SIZE(*addr, can_ifindex))
if (len < BCM_MIN_NAMELEN)
return -EINVAL;
lock_sock(sk);
@ -1616,8 +1618,8 @@ static int bcm_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
sock_recv_ts_and_drops(msg, sk, skb);
if (msg->msg_name) {
__sockaddr_check_size(sizeof(struct sockaddr_can));
msg->msg_namelen = sizeof(struct sockaddr_can);
__sockaddr_check_size(BCM_MIN_NAMELEN);
msg->msg_namelen = BCM_MIN_NAMELEN;
memcpy(msg->msg_name, skb->cb, msg->msg_namelen);
}

11
net/can/isotp.c
View File

@ -77,6 +77,8 @@ MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Oliver Hartkopp <socketcan@hartkopp.net>");
MODULE_ALIAS("can-proto-6");
#define ISOTP_MIN_NAMELEN CAN_REQUIRED_SIZE(struct sockaddr_can, can_addr.tp)
#define SINGLE_MASK(id) (((id) & CAN_EFF_FLAG) ? \
(CAN_EFF_MASK | CAN_EFF_FLAG | CAN_RTR_FLAG) : \
(CAN_SFF_MASK | CAN_EFF_FLAG | CAN_RTR_FLAG))
@ -986,7 +988,8 @@ static int isotp_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
sock_recv_timestamp(msg, sk, skb);
if (msg->msg_name) {
msg->msg_namelen = sizeof(struct sockaddr_can);
__sockaddr_check_size(ISOTP_MIN_NAMELEN);
msg->msg_namelen = ISOTP_MIN_NAMELEN;
memcpy(msg->msg_name, skb->cb, msg->msg_namelen);
}
@ -1056,7 +1059,7 @@ static int isotp_bind(struct socket *sock, struct sockaddr *uaddr, int len)
int notify_enetdown = 0;
int do_rx_reg = 1;
if (len < CAN_REQUIRED_SIZE(struct sockaddr_can, can_addr.tp))
if (len < ISOTP_MIN_NAMELEN)
return -EINVAL;
/* do not register frame reception for functional addressing */
@ -1152,13 +1155,13 @@ static int isotp_getname(struct socket *sock, struct sockaddr *uaddr, int peer)
if (peer)
return -EOPNOTSUPP;
memset(addr, 0, sizeof(*addr));
memset(addr, 0, ISOTP_MIN_NAMELEN);
addr->can_family = AF_CAN;
addr->can_ifindex = so->ifindex;
addr->can_addr.tp.rx_id = so->rxid;
addr->can_addr.tp.tx_id = so->txid;
return sizeof(*addr);
return ISOTP_MIN_NAMELEN;
}
static int isotp_setsockopt(struct socket *sock, int level, int optname,

14
net/can/raw.c
View File

@ -60,6 +60,8 @@ MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Urs Thuermann <urs.thuermann@volkswagen.de>");
MODULE_ALIAS("can-proto-1");
#define RAW_MIN_NAMELEN CAN_REQUIRED_SIZE(struct sockaddr_can, can_ifindex)
#define MASK_ALL 0
/* A raw socket has a list of can_filters attached to it, each receiving
@ -394,7 +396,7 @@ static int raw_bind(struct socket *sock, struct sockaddr *uaddr, int len)
int err = 0;
int notify_enetdown = 0;
if (len < CAN_REQUIRED_SIZE(*addr, can_ifindex))
if (len < RAW_MIN_NAMELEN)
return -EINVAL;
if (addr->can_family != AF_CAN)
return -EINVAL;
@ -475,11 +477,11 @@ static int raw_getname(struct socket *sock, struct sockaddr *uaddr,
if (peer)
return -EOPNOTSUPP;
memset(addr, 0, sizeof(*addr));
memset(addr, 0, RAW_MIN_NAMELEN);
addr->can_family = AF_CAN;
addr->can_ifindex = ro->ifindex;
return sizeof(*addr);
return RAW_MIN_NAMELEN;
}
static int raw_setsockopt(struct socket *sock, int level, int optname,
@ -739,7 +741,7 @@ static int raw_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
if (msg->msg_name) {
DECLARE_SOCKADDR(struct sockaddr_can *, addr, msg->msg_name);
if (msg->msg_namelen < CAN_REQUIRED_SIZE(*addr, can_ifindex))
if (msg->msg_namelen < RAW_MIN_NAMELEN)
return -EINVAL;
if (addr->can_family != AF_CAN)
@ -832,8 +834,8 @@ static int raw_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
sock_recv_ts_and_drops(msg, sk, skb);
if (msg->msg_name) {
__sockaddr_check_size(sizeof(struct sockaddr_can));
msg->msg_namelen = sizeof(struct sockaddr_can);
__sockaddr_check_size(RAW_MIN_NAMELEN);
msg->msg_namelen = RAW_MIN_NAMELEN;
memcpy(msg->msg_name, skb->cb, msg->msg_namelen);
}