Merge branch 'next' into for-linus

Prepare input updates for 6.6 merge window.

1 files changed, 11 insertions, 18 deletions

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index a8d961d3a477..5fa0e37305d9 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -569,24 +569,6 @@ looped_back:
 		return -1;
 	}
 
-	if (skb_cloned(skb)) {
-		if (pskb_expand_head(skb, IPV6_RPL_SRH_WORST_SWAP_SIZE, 0,
-				     GFP_ATOMIC)) {
-			__IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
-					IPSTATS_MIB_OUTDISCARDS);
-			kfree_skb(skb);
-			return -1;
-		}
-	} else {
-		err = skb_cow_head(skb, IPV6_RPL_SRH_WORST_SWAP_SIZE);
-		if (unlikely(err)) {
-			kfree_skb(skb);
-			return -1;
-		}
-	}
-
-	hdr = (struct ipv6_rpl_sr_hdr *)skb_transport_header(skb);
-
 	if (!pskb_may_pull(skb, ipv6_rpl_srh_size(n, hdr->cmpri,
 						  hdr->cmpre))) {
 		kfree_skb(skb);
@@ -630,6 +612,17 @@ looped_back:
 	skb_pull(skb, ((hdr->hdrlen + 1) << 3));
 	skb_postpull_rcsum(skb, oldhdr,
 			   sizeof(struct ipv6hdr) + ((hdr->hdrlen + 1) << 3));
+	if (unlikely(!hdr->segments_left)) {
+		if (pskb_expand_head(skb, sizeof(struct ipv6hdr) + ((chdr->hdrlen + 1) << 3), 0,
+				     GFP_ATOMIC)) {
+			__IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_OUTDISCARDS);
+			kfree_skb(skb);
+			kfree(buf);
+			return -1;
+		}
+
+		oldhdr = ipv6_hdr(skb);
+	}
 	skb_push(skb, ((chdr->hdrlen + 1) << 3) + sizeof(struct ipv6hdr));
 	skb_reset_network_header(skb);
 	skb_mac_header_rebuild(skb);