linux/include/net/inet_common.h
Eric Dumazet 8fa677d270 net: avoid NULL deref in inet_ctl_sock_destroy()
Under low memory conditions, tcp_sk_init() and icmp_sk_init()
can both iterate on all possible cpus and call inet_ctl_sock_destroy(),
with eventual NULL pointer.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-11-02 22:46:09 -05:00

49 lines
1.6 KiB
C

#ifndef _INET_COMMON_H
#define _INET_COMMON_H
extern const struct proto_ops inet_stream_ops;
extern const struct proto_ops inet_dgram_ops;
/*
* INET4 prototypes used by INET6
*/
struct msghdr;
struct sock;
struct sockaddr;
struct socket;
int inet_release(struct socket *sock);
int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
int addr_len, int flags);
int __inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
int addr_len, int flags);
int inet_dgram_connect(struct socket *sock, struct sockaddr *uaddr,
int addr_len, int flags);
int inet_accept(struct socket *sock, struct socket *newsock, int flags);
int inet_sendmsg(struct socket *sock, struct msghdr *msg, size_t size);
ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset,
size_t size, int flags);
int inet_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
int flags);
int inet_shutdown(struct socket *sock, int how);
int inet_listen(struct socket *sock, int backlog);
void inet_sock_destruct(struct sock *sk);
int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len);
int inet_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len,
int peer);
int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
int inet_ctl_sock_create(struct sock **sk, unsigned short family,
unsigned short type, unsigned char protocol,
struct net *net);
int inet_recv_error(struct sock *sk, struct msghdr *msg, int len,
int *addr_len);
static inline void inet_ctl_sock_destroy(struct sock *sk)
{
if (sk)
sock_release(sk->sk_socket);
}
#endif