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Bluetooth: Fix error handling for l2cap_init()

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create_singlethread_workqueue() may fail with errors such as -ENOMEM. If
this happens, the return value is not set to a negative value and the
module load will succeed. It will then crash on module unload because of
a destroy_workqueue() call on a NULL pointer.

Additionally, the _busy_wq workqueue is not being destroyed if any
errors happen on l2cap_init().

Signed-off-by: Anderson Lizardo <anderson.lizardo@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Anderson Lizardo 2010-11-29 12:15:50 -04:00 committed by Gustavo F. Padovan
parent eeb366564b
commit b78d7b4f20
1 changed files with 5 additions and 2 deletions
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7
net/bluetooth/l2cap.c
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@ -4871,8 +4871,10 @@ static int __init l2cap_init(void)
return err;
_busy_wq = create_singlethread_workqueue("l2cap");
if (!_busy_wq)
goto error;
if (!_busy_wq) {
proto_unregister(&l2cap_proto);
return -ENOMEM;
}
err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops);
if (err < 0) {
@ -4900,6 +4902,7 @@ static int __init l2cap_init(void)
return 0;
error:
destroy_workqueue(_busy_wq);
proto_unregister(&l2cap_proto);
return err;
}