Commit f50f95ca authored by Vlad Yasevich's avatar Vlad Yasevich Committed by David S. Miller
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SCTP: Check to make sure file is valid before setting timeout

In-kernel sockets created with sock_create_kern don't usually
have a file and file descriptor allocated to them.  As a result,
when SCTP tries to check the non-blocking flag, we Oops when
dereferencing a NULL file pointer.
Signed-off-by: default avatarVlad Yasevich <>
Signed-off-by: default avatarDavid S. Miller <>
parent 3663c306
......@@ -980,6 +980,7 @@ static int __sctp_connect(struct sock* sk,
union sctp_addr *sa_addr;
void *addr_buf;
unsigned short port;
unsigned int f_flags = 0;
sp = sctp_sk(sk);
ep = sp->ep;
......@@ -1106,7 +1107,14 @@ static int __sctp_connect(struct sock* sk,
af->to_sk_daddr(&to, sk);
sk->sk_err = 0;
timeo = sock_sndtimeo(sk, sk->sk_socket->file->f_flags & O_NONBLOCK);
/* in-kernel sockets don't generally have a file allocated to them
* if all they do is call sock_create_kern().
if (sk->sk_socket->file)
f_flags = sk->sk_socket->file->f_flags;
timeo = sock_sndtimeo(sk, f_flags & O_NONBLOCK);
err = sctp_wait_for_connect(asoc, &timeo);
/* Don't free association on exit. */
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