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Bluetooth: btusb: Fix memory leak

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This checks if CONFIG_DEV_COREDUMP is enabled before attempting to clone
the skb and also make sure btmtk_process_coredump frees the skb passed
following the same logic.

Fixes: 0b7015132878 ("Bluetooth: btusb: mediatek: add MediaTek devcoredump support")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz 2024-02-28 11:17:24 -05:00
parent a6e06258f4
commit 79f4127a50
2 changed files with 9 additions and 5 deletions
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4
drivers/bluetooth/btmtk.c
View File

@ -372,8 +372,10 @@ int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb)
struct btmediatek_data *data = hci_get_priv(hdev);
int err;
if (!IS_ENABLED(CONFIG_DEV_COREDUMP))
if (!IS_ENABLED(CONFIG_DEV_COREDUMP)) {
kfree_skb(skb);
return 0;
}
switch (data->cd_info.state) {
case HCI_DEVCOREDUMP_IDLE:

10
drivers/bluetooth/btusb.c
View File

@ -3281,7 +3281,6 @@ static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
{
struct btusb_data *data = hci_get_drvdata(hdev);
u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
struct sk_buff *skb_cd;
switch (handle) {
case 0xfc6f: /* Firmware dump from device */
@ -3294,9 +3293,12 @@ static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
* for backward compatibility, so we have to clone the packet
* extraly for the in-kernel coredump support.
*/
skb_cd = skb_clone(skb, GFP_ATOMIC);
if (skb_cd)
btmtk_process_coredump(hdev, skb_cd);
if (IS_ENABLED(CONFIG_DEV_COREDUMP)) {
struct sk_buff *skb_cd = skb_clone(skb, GFP_ATOMIC);
if (skb_cd)
btmtk_process_coredump(hdev, skb_cd);
}
fallthrough;
case 0x05ff: /* Firmware debug logging 1 */