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| author | Jaganath Kanakkassery <jaganath.k.os@gmail.com> | 2017-10-25 10:58:48 +0530 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2017-10-29 14:07:10 +0100 |
| commit | f17d858ed0a48270db4368d8cf370e3839ee6f4f (patch) | |
| tree | 975b67fd9b1bf35c27320b25f11b8fa508d69a12 /net/bluetooth | |
| parent | 858ff38af77fc660092e82474ecc6ac135ed29fe (diff) | |
| download | linux-f17d858ed0a48270db4368d8cf370e3839ee6f4f.tar.gz linux-f17d858ed0a48270db4368d8cf370e3839ee6f4f.tar.bz2 linux-f17d858ed0a48270db4368d8cf370e3839ee6f4f.zip | |
Bluetooth: Fix potential memory leak
If command is added to req then it should be freed in case if
hdev is down or HCI_ADVERTISING flag is set.
This introduces a helper in hci_request to purge the cmd_q
to make cmd_q internal to hci_request which is used to fix
the leak.
This also replace accessing of cmd_q in hci_conn with the
new helper.
Signed-off-by: Jaganath Kanakkassery <jaganathx.kanakkassery@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/hci_conn.c | 2 | ||||
| -rw-r--r-- | net/bluetooth/hci_request.c | 5 | ||||
| -rw-r--r-- | net/bluetooth/hci_request.h | 1 | ||||
| -rw-r--r-- | net/bluetooth/mgmt.c | 1 |
4 files changed, 8 insertions, 1 deletions
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index dc59eae54717..746adcb62259 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -907,7 +907,7 @@ struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, */ if (hci_dev_test_flag(hdev, HCI_LE_SCAN) && hdev->le_scan_type == LE_SCAN_ACTIVE) { - skb_queue_purge(&req.cmd_q); + hci_req_purge(&req); hci_conn_del(conn); return ERR_PTR(-EBUSY); } diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c index b73ac149de34..7f28d17dc792 100644 --- a/net/bluetooth/hci_request.c +++ b/net/bluetooth/hci_request.c @@ -41,6 +41,11 @@ void hci_req_init(struct hci_request *req, struct hci_dev *hdev) req->err = 0; } +void hci_req_purge(struct hci_request *req) +{ + skb_queue_purge(&req->cmd_q); +} + static int req_run(struct hci_request *req, hci_req_complete_t complete, hci_req_complete_skb_t complete_skb) { diff --git a/net/bluetooth/hci_request.h b/net/bluetooth/hci_request.h index dde77bd59f91..702beb140d9f 100644 --- a/net/bluetooth/hci_request.h +++ b/net/bluetooth/hci_request.h @@ -36,6 +36,7 @@ struct hci_request { }; void hci_req_init(struct hci_request *req, struct hci_dev *hdev); +void hci_req_purge(struct hci_request *req); int hci_req_run(struct hci_request *req, hci_req_complete_t complete); int hci_req_run_skb(struct hci_request *req, hci_req_complete_skb_t complete); void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 1fba2a03f8ae..07a3cc29f426 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -6383,6 +6383,7 @@ static int remove_advertising(struct sock *sk, struct hci_dev *hdev, if (skb_queue_empty(&req.cmd_q) || !hdev_is_powered(hdev) || hci_dev_test_flag(hdev, HCI_ADVERTISING)) { + hci_req_purge(&req); rp.instance = cp->instance; err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING, |