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Bluetooth: virtio_bt: Use skb_put to set length 

By using skb_put we ensure that skb->tail is set
correctly. Currently, skb->tail is always zero, which
leads to errors, such as the following page fault in
rfcomm_recv_frame:

    BUG: unable to handle page fault for address: ffffed1021de29ff
    #PF: supervisor read access in kernel mode
    #PF: error_code(0x0000) - not-present page
    RIP: 0010:rfcomm_run+0x831/0x4040 (net/bluetooth/rfcomm/core.c:1751)

Fixes: afd2daa26c ("Bluetooth: Add support for virtio transport driver")
Signed-off-by: Soenke Huster <soenke.huster@eknoes.de>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Soenke Huster 2022-10-12 09:45:06 +02:00 committed by Luiz Augusto von Dentz
parent b36a234dc4
commit 160fbcf3bf
1 changed files with 1 additions and 1 deletions
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2
drivers/bluetooth/virtio_bt.c
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@ -219,7 +219,7 @@ static void virtbt_rx_work(struct work_struct *work)
if (!skb)
return;
skb->len = len;
skb_put(skb, len);
virtbt_rx_handle(vbt, skb);
if (virtbt_add_inbuf(vbt) < 0)