6.16-stable review patch. If anyone has any objections, please let me know.
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From: Jeremy Kerr jk@codeconstruct.com.au
[ Upstream commit e27e34bc99413a29cafae02ad572ea3c9beba2ce ]
We're not currently setting skb->mac_header on ingress, and the netdev core rx path expects it. Without it, we'll hit a warning on DEBUG_NETDEV from commit 1e4033b53db4 ("net: skb_reset_mac_len() must check if mac_header was set")
Initialise the mac_header to refer to the USB transport header.
Fixes: 0791c0327a6e ("net: mctp: Add MCTP USB transport driver") Signed-off-by: Jeremy Kerr jk@codeconstruct.com.au Link: https://patch.msgid.link/20250829-mctp-usb-mac-header-v1-1-338ad725e183@code... Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/mctp/mctp-usb.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/mctp/mctp-usb.c b/drivers/net/mctp/mctp-usb.c index 775a386d0aca1..36ccc53b17975 100644 --- a/drivers/net/mctp/mctp-usb.c +++ b/drivers/net/mctp/mctp-usb.c @@ -183,6 +183,7 @@ static void mctp_usb_in_complete(struct urb *urb) struct mctp_usb_hdr *hdr; u8 pkt_len; /* length of MCTP packet, no USB header */
+ skb_reset_mac_header(skb); hdr = skb_pull_data(skb, sizeof(*hdr)); if (!hdr) break;