Use the kernel pointer that sctp_setsockopt has available instead of
directly handling the user pointer.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
net/sctp/socket.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index e4b537e6d61da..fe8d1ea7d9c35 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -3909,18 +3909,13 @@ static int sctp_setsockopt_recvrcvinfo(struct sock *sk, int *val,
return 0;
}
-static int sctp_setsockopt_recvnxtinfo(struct sock *sk,
- char __user *optval,
+static int sctp_setsockopt_recvnxtinfo(struct sock *sk, int *val,
unsigned int optlen)
{
- int val;
-
if (optlen < sizeof(int))
return -EINVAL;
- if (get_user(val, (int __user *) optval))
- return -EFAULT;
- sctp_sk(sk)->recvnxtinfo = (val == 0) ? 0 : 1;
+ sctp_sk(sk)->recvnxtinfo = (*val == 0) ? 0 : 1;
return 0;
}
@@ -4689,7 +4684,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname,
retval = sctp_setsockopt_recvrcvinfo(sk, kopt, optlen);
break;
case SCTP_RECVNXTINFO:
- retval = sctp_setsockopt_recvnxtinfo(sk, optval, optlen);
+ retval = sctp_setsockopt_recvnxtinfo(sk, kopt, optlen);
break;
case SCTP_PR_SUPPORTED:
retval = sctp_setsockopt_pr_supported(sk, optval, optlen);
--
2.26.2
