Messages in this thread Patch in this message | | | From | Dongliang Mu <> | Subject | [PATCH] ath9k: hif_usb: fix memory leak in ath9k_hif_usb_firmware_cb | Date | Fri, 9 Jul 2021 16:43:51 +0800 |
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The commit 03fb92a432ea ("ath9k: hif_usb: fix race condition between usb_get_urb() and usb_kill_anchored_urbs()") adds three usb_get_urb in ath9k_hif_usb_dealloc_tx_urbs and usb_free_urb.
Fix this bug by adding corresponding usb_free_urb in ath9k_hif_usb_dealloc_tx_urbs other and hif_usb_stop.
Reported-by: syzbot+6692c72009680f7c4eb2@syzkaller.appspotmail.com Fixes: 03fb92a432ea ("ath9k: hif_usb: fix race condition between usb_get_urb() and usb_kill_anchored_urbs()") Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com> --- drivers/net/wireless/ath/ath9k/hif_usb.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c index 860da13bfb6a..bda91ff3289b 100644 --- a/drivers/net/wireless/ath/ath9k/hif_usb.c +++ b/drivers/net/wireless/ath/ath9k/hif_usb.c @@ -457,6 +457,7 @@ static void hif_usb_stop(void *hif_handle) usb_kill_urb(tx_buf->urb); list_del(&tx_buf->list); usb_free_urb(tx_buf->urb); + usb_free_urb(tx_buf->urb); kfree(tx_buf->buf); kfree(tx_buf); spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); @@ -779,6 +780,7 @@ static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev) usb_kill_urb(tx_buf->urb); list_del(&tx_buf->list); usb_free_urb(tx_buf->urb); + usb_free_urb(tx_buf->urb); kfree(tx_buf->buf); kfree(tx_buf); spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); @@ -797,6 +799,7 @@ static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev) usb_kill_urb(tx_buf->urb); list_del(&tx_buf->list); usb_free_urb(tx_buf->urb); + usb_free_urb(tx_buf->urb); kfree(tx_buf->buf); kfree(tx_buf); spin_lock_irqsave(&hif_dev->tx.tx_lock, flags); -- 2.25.1
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