Re: [syzbot] [hams?] KMSAN: uninit-value in nr_route_frame

[Edward Adam Davis]

please test uninit-value in nr_route_frame

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index edbbef563d4d..c8662be35000 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -656,6 +656,7 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask,
 	 * to allow max possible filling before reallocation.
 	 */
 	prefetchw(data + SKB_WITH_OVERHEAD(size));
+	memset(data, 0, sizeof(*data));
 
 	/*
 	 * Only clear those fields we need to clear, not those that we will