Re: [PATCH] 6lowpan: iphc: reset mac_header after decompress to fix panic

After decompression of 6lowpan socket data, an IPv6 header is
inserted
before the existing socket payload.  After this, we reset the
network_header value of the skb to account for the difference in
payload
size from prior to decompression + the addition of the IPv6 header.


Signed-off-by: Michael Scott <redacted>
---
 net/6lowpan/iphc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c
index 6b1042e21656..52fad5dad9f7 100644
--- a/net/6lowpan/iphc.c
+++ b/net/6lowpan/iphc.c

@@ -770,6 +770,7 @@ int lowpan_header_decompress(struct sk_buff *skb,

const struct net_device *dev,
 		hdr.hop_limit, &hdr.daddr);
 
 	skb_push(skb, sizeof(hdr));
+	skb_reset_mac_header(skb);
 	skb_reset_network_header(skb);
 	skb_copy_to_linear_data(skb, &hdr, sizeof(hdr));