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| author | Anderson Lizardo <anderson.lizardo@openbossa.org> | 2010-11-29 12:15:50 -0400 |
|---|---|---|
| committer | Gustavo F. Padovan <padovan@profusion.mobi> | 2010-12-01 21:04:43 -0200 |
| commit | b78d7b4f204a6ba1901af36c95e10fded9816054 (patch) | |
| tree | 7c9106a631778aee9ffdeca94e0054a5fe818412 /net/bluetooth/l2cap.c | |
| parent | eeb366564be7c311b31c70821d18a43a8a57f9bc (diff) | |
| download | linux-b78d7b4f204a6ba1901af36c95e10fded9816054.tar.bz2 | |
Bluetooth: Fix error handling for l2cap_init()
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>
Diffstat (limited to 'net/bluetooth/l2cap.c')
| -rw-r--r-- | net/bluetooth/l2cap.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index 12b4aa2f8fc9..a1c7ae88dd1f 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -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; } |