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Bluetooth: Fix dereference after NULL check 

Move code dereferencing possible NULL pointer to the check branch.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Andrei Emeltchenko 2012-10-05 16:56:54 +03:00 committed by Gustavo Padovan
parent 079db0c6e3
commit 85e34368de
1 changed files with 6 additions and 5 deletions
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11
net/bluetooth/l2cap_sock.c
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@ -382,13 +382,14 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, ch
}
memset(&sec, 0, sizeof(sec));
if (chan->conn)
if (chan->conn) {
sec.level = chan->conn->hcon->sec_level;
else
sec.level = chan->sec_level;
if (sk->sk_state == BT_CONNECTED)
sec.key_size = chan->conn->hcon->enc_key_size;
if (sk->sk_state == BT_CONNECTED)
sec.key_size = chan->conn->hcon->enc_key_size;
} else {
sec.level = chan->sec_level;
}
len = min_t(unsigned int, len, sizeof(sec));
if (copy_to_user(optval, (char *) &sec, len))