[Bluetooth] Fix double frees on error paths of btusb and bpa10x drivers

The transfer buffer of an URB will be automatically freed when using
the URB_FREE_BUFFER transfer_flag. So the extra calls to kfree() will
cause a double free.

Reported-by: Justin Mattock <justinmattock@gmail.com>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

2 files changed, 0 insertions, 5 deletions

diff --git a/drivers/bluetooth/bpa10x.c b/drivers/bluetooth/bpa10x.c
index 1e55a658e6c..32f3a8ed8d3 100644
--- a/drivers/bluetooth/bpa10x.c
+++ b/drivers/bluetooth/bpa10x.c
@@ -256,7 +256,6 @@ static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev)
                 BT_ERR("%s urb %p submission failed (%d)",
                                                 hdev->name, urb, -err);
                 usb_unanchor_urb(urb);
-                kfree(buf);
         }
 
         usb_free_urb(urb);
@@ -298,7 +297,6 @@ static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev)
                 BT_ERR("%s urb %p submission failed (%d)",
                                                 hdev->name, urb, -err);
                 usb_unanchor_urb(urb);
-                kfree(buf);
         }
 
         usb_free_urb(urb);
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 29ae99817c6..262e9bebebc 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -271,7 +271,6 @@ static int btusb_submit_intr_urb(struct hci_dev *hdev)
                 BT_ERR("%s urb %p submission failed (%d)",
                                                 hdev->name, urb, -err);
                 usb_unanchor_urb(urb);
-                kfree(buf);
         }
 
         usb_free_urb(urb);
@@ -354,7 +353,6 @@ static int btusb_submit_bulk_urb(struct hci_dev *hdev)
                 BT_ERR("%s urb %p submission failed (%d)",
                                                 hdev->name, urb, -err);
                 usb_unanchor_urb(urb);
-                kfree(buf);
         }
 
         usb_free_urb(urb);
@@ -475,7 +473,6 @@ static int btusb_submit_isoc_urb(struct hci_dev *hdev)
                 BT_ERR("%s urb %p submission failed (%d)",
                                                 hdev->name, urb, -err);
                 usb_unanchor_urb(urb);
-                kfree(buf);
         }
 
         usb_free_urb(urb);