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-rw-r--r--include/linux/poison.h3
-rw-r--r--include/linux/skbuff.h7
2 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/poison.h b/include/linux/poison.h
index 2d3249eb0e62..2823f90fdab4 100644
--- a/include/linux/poison.h
+++ b/include/linux/poison.h
@@ -81,6 +81,9 @@
/********** net/core/page_pool.c **********/
#define PP_SIGNATURE (0x40 + POISON_POINTER_DELTA)
+/********** net/core/skbuff.c **********/
+#define SKB_LIST_POISON_NEXT ((void *)(0x800 + POISON_POINTER_DELTA))
+
/********** kernel/bpf/ **********/
#define BPF_PTR_POISON ((void *)(0xeB9FUL + POISON_POINTER_DELTA))
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 5ba12185f43e..1fa95b916342 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1738,6 +1738,13 @@ static inline void skb_mark_not_on_list(struct sk_buff *skb)
skb->next = NULL;
}
+static inline void skb_poison_list(struct sk_buff *skb)
+{
+#ifdef CONFIG_DEBUG_NET
+ skb->next = SKB_LIST_POISON_NEXT;
+#endif
+}
+
/* Iterate through singly-linked GSO fragments of an skb. */
#define skb_list_walk_safe(first, skb, next_skb) \
for ((skb) = (first), (next_skb) = (skb) ? (skb)->next : NULL; (skb); \