diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 97b4a42e6e34..6d204cf54c57 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4810,7 +4810,9 @@ static __always_inline unsigned int skb_ext_total_length(void)
 static void skb_extensions_init(void)
 {
 	BUILD_BUG_ON(SKB_EXT_NUM >= 8);
+#if !IS_ENABLED(CONFIG_KCOV_INSTRUMENT_ALL)
 	BUILD_BUG_ON(skb_ext_total_length() > 255);
+#endif
 
 	skbuff_ext_cache = kmem_cache_create("skbuff_ext_cache",
 					     SKB_EXT_ALIGN_VALUE * skb_ext_total_length(),