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| author | Soenke Huster <soenke.huster@eknoes.de> | 2022-10-12 09:45:06 +0200 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2022-11-02 14:15:42 -0700 |
| commit | 160fbcf3bfb93c3c086427f9f4c8bc70f217e9be (patch) | |
| tree | 4c7f8948f9428e5bdc63acfaf5b3d0acf5b232e9 /drivers/bluetooth/virtio_bt.c | |
| parent | b36a234dc438cb6b76fc929a8df9a0e59c8acf23 (diff) | |
| download | lwn-160fbcf3bfb93c3c086427f9f4c8bc70f217e9be.tar.gz lwn-160fbcf3bfb93c3c086427f9f4c8bc70f217e9be.zip | |
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: afd2daa26c7a ("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>
Diffstat (limited to 'drivers/bluetooth/virtio_bt.c')
| -rw-r--r-- | drivers/bluetooth/virtio_bt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/bluetooth/virtio_bt.c b/drivers/bluetooth/virtio_bt.c index 67c21263f9e0..fd281d439505 100644 --- a/drivers/bluetooth/virtio_bt.c +++ b/drivers/bluetooth/virtio_bt.c @@ -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) |