We recently changed these two pointers from void pointers to struct
pointers and it breaks the pointer math so now the "txphdr" points
beyond the end of the buffer.

Fixes: 56a967c4f7e5 ("net: qualcomm: rmnet: Remove some unneeded 
casts")
Signed-off-by: Dan Carpenter <redacted>
---
 drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c

b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
index 3ee5c1a8b46e..3676976c875b 100644

--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c

@@ -168,7 +168,7 @@ static void

rmnet_map_complement_ipv4_txporthdr_csum_field(struct iphdr *ip4h)
 	void *txphdr;
 	u16 *csum;

-	txphdr = ip4h + ip4h->ihl * 4;
+	txphdr = (void *)ip4h + ip4h->ihl * 4;

 	if (ip4h->protocol == IPPROTO_TCP || ip4h->protocol == IPPROTO_UDP) {
 		csum = (u16 *)rmnet_map_get_csum_field(ip4h->protocol, txphdr);

@@ -203,7 +203,7 @@

rmnet_map_complement_ipv6_txporthdr_csum_field(struct ipv6hdr *ip6h)
 	void *txphdr;
 	u16 *csum;

-	txphdr = ip6h + sizeof(struct ipv6hdr);
+	txphdr = ip6h + 1;

 	if (ip6h->nexthdr == IPPROTO_TCP || ip6h->nexthdr == IPPROTO_UDP) {
 		csum = (u16 *)rmnet_map_get_csum_field(ip6h->nexthdr, txphdr);