diff options
| author | Pauli Virtanen <pav@iki.fi> | 2025-11-03 20:29:46 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-03 12:45:16 +0100 |
| commit | ea46a1d217bc82e01cf3d0424e50ebfe251e34bf (patch) | |
| tree | 23268b517386fca0f55f53c802102618cdf5f8e0 | |
| parent | 297dbf87989e09af98f81f2bcb938041785557e8 (diff) | |
Bluetooth: 6lowpan: reset link-local header on ipv6 recv path
[ Upstream commit 3b78f50918276ab28fb22eac9aa49401ac436a3b ]
Bluetooth 6lowpan.c netdev has header_ops, so it must set link-local
header for RX skb, otherwise things crash, eg. with AF_PACKET SOCK_RAW
Add missing skb_reset_mac_header() for uncompressed ipv6 RX path.
For the compressed one, it is done in lowpan_header_decompress().
Log: (BlueZ 6lowpan-tester Client Recv Raw - Success)
------
kernel BUG at net/core/skbuff.c:212!
Call Trace:
<IRQ>
...
packet_rcv (net/packet/af_packet.c:2152)
...
<TASK>
__local_bh_enable_ip (kernel/softirq.c:407)
netif_rx (net/core/dev.c:5648)
chan_recv_cb (net/bluetooth/6lowpan.c:294 net/bluetooth/6lowpan.c:359)
------
Fixes: 18722c247023 ("Bluetooth: Enable 6LoWPAN support for BT LE devices")
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | net/bluetooth/6lowpan.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c index 12052b766441..dd7fdfd155c6 100644 --- a/net/bluetooth/6lowpan.c +++ b/net/bluetooth/6lowpan.c @@ -317,6 +317,7 @@ static int recv_pkt(struct sk_buff *skb, struct net_device *dev, local_skb->pkt_type = PACKET_HOST; local_skb->dev = dev; + skb_reset_mac_header(local_skb); skb_set_transport_header(local_skb, sizeof(struct ipv6hdr)); if (give_skb_to_upper(local_skb, dev) != NET_RX_SUCCESS) { |