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-rw-r--r--net/tipc/msg.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/tipc/msg.c b/net/tipc/msg.c
index 8740930f0787..17201aa8423d 100644
--- a/net/tipc/msg.c
+++ b/net/tipc/msg.c
@@ -41,6 +41,8 @@
#include "name_table.h"
#define MAX_FORWARD_SIZE 1024
+#define BUF_HEADROOM (LL_MAX_HEADER + 48)
+#define BUF_TAILROOM 16
static unsigned int align(unsigned int i)
{
@@ -505,6 +507,10 @@ bool tipc_msg_reverse(u32 own_node, struct sk_buff **skb, int err)
msg_set_hdr_sz(hdr, BASIC_H_SIZE);
}
+ if (skb_cloned(_skb) &&
+ pskb_expand_head(_skb, BUF_HEADROOM, BUF_TAILROOM, GFP_KERNEL))
+ goto exit;
+
/* Now reverse the concerned fields */
msg_set_errcode(hdr, err);
msg_set_origport(hdr, msg_destport(&ohdr));