Messages in this thread Patch in this message | | | From | Anant Thazhemadam <> | Subject | [PATCH v5] bluetooth: hci_h5: fix memory leak in h5_close | Date | Fri, 16 Oct 2020 18:44:47 +0530 |
| |
When h5_close() is called, h5 is directly freed when !hu->serdev. However, h5->rx_skb is not freed, which causes a memory leak.
Freeing h5->rx_skb and setting it to NULL, fixes this memory leak.
Fixes: ce945552fde4 ("Bluetooth: hci_h5: Add support for serdev enumerated devices") Reported-by: syzbot+6ce141c55b2f7aafd1c4@syzkaller.appspotmail.com Tested-by: syzbot+6ce141c55b2f7aafd1c4@syzkaller.appspotmail.com Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com> --- Changes in v5: * Set h5->rx_skb = NULL unconditionally - to improve code readability * Update commit message accordingly
Changes in v4: * Free h5->rx_skb even when hu->serdev (Suggested by Hans de Goede <hdegoede@redhat.com>) * If hu->serdev, then assign h5->rx_skb = NULL
Changes in v3: * Free h5->rx_skb when !hu->serdev, and fix the memory leak * Do not incorrectly and unnecessarily call serdev_device_close()
Changes in v2: * Fixed the Fixes tag
drivers/bluetooth/hci_h5.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c index e41854e0d79a..0ef253136b06 100644 --- a/drivers/bluetooth/hci_h5.c +++ b/drivers/bluetooth/hci_h5.c @@ -245,6 +245,9 @@ static int h5_close(struct hci_uart *hu) skb_queue_purge(&h5->rel); skb_queue_purge(&h5->unrel); + kfree_skb(h5->rx_skb); + h5->rx_skb = NULL; + if (h5->vnd && h5->vnd->close) h5->vnd->close(h5); -- 2.25.1
| |