Commit ac0107ed authored by Ursula Braun's avatar Ursula Braun Committed by David S. Miller

net/smc: add error handling for get_user()

For security reasons the return code of get_user() should always be
checked.

Fixes: 01d2f7e2 ("net/smc: sockopts TCP_NODELAY and TCP_CORK")
Reported-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarUrsula Braun <ubraun@linux.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 99be51f1
...@@ -1456,7 +1456,8 @@ static int smc_setsockopt(struct socket *sock, int level, int optname, ...@@ -1456,7 +1456,8 @@ static int smc_setsockopt(struct socket *sock, int level, int optname,
if (optlen < sizeof(int)) if (optlen < sizeof(int))
return -EINVAL; return -EINVAL;
get_user(val, (int __user *)optval); if (get_user(val, (int __user *)optval))
return -EFAULT;
lock_sock(sk); lock_sock(sk);
switch (optname) { switch (optname) {
......
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