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Bluetooth: fix passkey uninitialized when used

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This patch fix the issue: warning:variable 'passkey' is uninitialized
when used here

Link: https://groups.google.com/forum/#!topic/clang-built-linux/kyRKCjRsGoU

Fixes: cee5f20fec ("Bluetooth: secure bluetooth stack from bluedump attack")
Reported-by: kbuild test robot <lkp@intel.com>
Suggested-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Howard Chung <howardchung@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Howard Chung 2020-02-20 11:17:29 +08:00 committed by Marcel Holtmann
parent 1c22d3cda8
commit eed467b517
1 changed files with 11 additions and 9 deletions
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20
net/bluetooth/smp.c
View file

@ -2115,7 +2115,7 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb)
struct l2cap_chan *chan = conn->smp;
struct smp_chan *smp = chan->data;
struct hci_conn *hcon = conn->hcon;
u8 *pkax, *pkbx, *na, *nb;
u8 *pkax, *pkbx, *na, *nb, confirm_hint;
u32 passkey;
int err;
@ -2179,13 +2179,12 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb)
*/
if (hci_find_ltk(hcon->hdev, &hcon->dst, hcon->dst_type,
hcon->role)) {
err = mgmt_user_confirm_request(hcon->hdev, &hcon->dst,
hcon->type,
hcon->dst_type,
passkey, 1);
if (err)
return SMP_UNSPECIFIED;
set_bit(SMP_FLAG_WAIT_USER, &smp->flags);
/* Set passkey to 0. The value can be any number since
* it'll be ignored anyway.
*/
passkey = 0;
confirm_hint = 1;
goto confirm;
}
}
@ -2207,8 +2206,11 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb)
if (err)
return SMP_UNSPECIFIED;
confirm_hint = 0;
confirm:
err = mgmt_user_confirm_request(hcon->hdev, &hcon->dst, hcon->type,
hcon->dst_type, passkey, 0);
hcon->dst_type, passkey, confirm_hint);
if (err)
return SMP_UNSPECIFIED;