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 | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index bc37174bd71af0..d7ed8c6ea3754f 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -2242,7 +2242,7 @@ static int sctp_setsockopt_events(struct sock *sk, __u8 *sn_type,
* integer defining the number of seconds of idle time before an
* association is closed.
*/
-static int sctp_setsockopt_autoclose(struct sock *sk, char __user *optval,
+static int sctp_setsockopt_autoclose(struct sock *sk, u32 *optval,
unsigned int optlen)
{
struct sctp_sock *sp = sctp_sk(sk);
@@ -2253,9 +2253,8 @@ static int sctp_setsockopt_autoclose(struct sock *sk, char __user *optval,
return -EOPNOTSUPP;
if (optlen != sizeof(int))
return -EINVAL;
- if (copy_from_user(&sp->autoclose, optval, optlen))
- return -EFAULT;
+ sp->autoclose = *optval;
if (sp->autoclose > net->sctp.max_autoclose)
sp->autoclose = net->sctp.max_autoclose;
@@ -4696,7 +4695,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname,
break;
case SCTP_AUTOCLOSE:
- retval = sctp_setsockopt_autoclose(sk, optval, optlen);
+ retval = sctp_setsockopt_autoclose(sk, kopt, optlen);
break;
case SCTP_PEER_ADDR_PARAMS:
--
2.27.0
