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Bluetooth: smp: Fix possible NULL dereference 

smp_chan_create might return NULL so we need to check before
dereferencing smp.

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 2012-07-19 17:03:43 +03:00 committed by Gustavo Padovan
parent c3e7c0d90b
commit d08fd0e712
1 changed files with 4 additions and 1 deletions
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5
net/bluetooth/smp.c
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@ -579,8 +579,11 @@ static u8 smp_cmd_pairing_req(struct l2cap_conn *conn, struct sk_buff *skb)
if (!test_and_set_bit(HCI_CONN_LE_SMP_PEND, &conn->hcon->flags))
smp = smp_chan_create(conn);
else
smp = conn->smp_chan;
smp = conn->smp_chan;
if (!smp)
return SMP_UNSPECIFIED;
smp->preq[0] = SMP_CMD_PAIRING_REQ;
memcpy(&smp->preq[1], req, sizeof(*req));