diff options
| author | Mark-YW.Chen <mark-yw.chen@mediatek.com> | 2021-10-14 00:22:04 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-16 09:15:38 +0100 |
| commit | 784e873af3dc69b61c80f0ce7d99bb7a1bdc3100 (patch) | |
| tree | 89b529698da804470204f7e3d510525c4dd11454 /drivers/bluetooth | |
| parent | ad07b60837b24346a9bb3bf018da5a6926c22a53 (diff) | |
Bluetooth: btusb: fix memory leak in btusb_mtk_submit_wmt_recv_urb()
commit 60c6a63a3d3080a62f3e0e20084f58dbeff16748 upstream.
Driver should free `usb->setup_packet` to avoid the leak.
$ cat /sys/kernel/debug/kmemleak
unreferenced object 0xffffffa564a58080 (size 128):
backtrace:
[<000000007eb8dd70>] kmem_cache_alloc_trace+0x22c/0x384
[<000000008a44191d>] btusb_mtk_hci_wmt_sync+0x1ec/0x994
[btusb]
[<00000000ca7189a3>] btusb_mtk_setup+0x6b8/0x13cc
[btusb]
[<00000000c6105069>] hci_dev_do_open+0x290/0x974
[bluetooth]
[<00000000a583f8b8>] hci_power_on+0xdc/0x3cc [bluetooth]
[<000000005d80e687>] process_one_work+0x514/0xc80
[<00000000f4d57637>] worker_thread+0x818/0xd0c
[<00000000dc7bdb55>] kthread+0x2f8/0x3b8
[<00000000f9999513>] ret_from_fork+0x10/0x30
Fixes: a1c49c434e150 ("Bluetooth: btusb: Add protocol support for MediaTek MT7668U USB devices")
Signed-off-by: Mark-YW.Chen <mark-yw.chen@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btusb.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 6d643651d69f..c8f2b991e9cf 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -2568,6 +2568,7 @@ static void btusb_mtk_wmt_recv(struct urb *urb) skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); if (!skb) { hdev->stat.err_rx++; + kfree(urb->setup_packet); return; } @@ -2588,6 +2589,7 @@ static void btusb_mtk_wmt_recv(struct urb *urb) data->evt_skb = skb_clone(skb, GFP_ATOMIC); if (!data->evt_skb) { kfree_skb(skb); + kfree(urb->setup_packet); return; } } @@ -2596,6 +2598,7 @@ static void btusb_mtk_wmt_recv(struct urb *urb) if (err < 0) { kfree_skb(data->evt_skb); data->evt_skb = NULL; + kfree(urb->setup_packet); return; } @@ -2606,6 +2609,7 @@ static void btusb_mtk_wmt_recv(struct urb *urb) wake_up_bit(&data->flags, BTUSB_TX_WAIT_VND_EVT); } + kfree(urb->setup_packet); return; } else if (urb->status == -ENOENT) { /* Avoid suspend failed when usb_kill_urb */ @@ -2626,6 +2630,7 @@ static void btusb_mtk_wmt_recv(struct urb *urb) usb_anchor_urb(urb, &data->ctrl_anchor); err = usb_submit_urb(urb, GFP_ATOMIC); if (err < 0) { + kfree(urb->setup_packet); /* -EPERM: urb is being killed; * -ENODEV: device got disconnected */ |