From fa4a4fb42269be6b41ff21ad248dad5cbda053c1 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Wed, 6 Apr 2022 14:15:21 -0700 Subject: [PATCH] flow_dissector: fix false-positive __read_overflow2_field() warning Bounds checking is unhappy that we try to copy both Ethernet addresses but pass pointer to the first one. Luckily destination address is the first field so pass the pointer to the entire header, whatever. Signed-off-by: Jakub Kicinski Reviewed-by: Kees Cook Signed-off-by: David S. Miller --- net/core/flow_dissector.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 9bd887610c18f..6f7ec72016dcd 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -1032,7 +1032,7 @@ bool __skb_flow_dissect(const struct net *net, key_eth_addrs = skb_flow_dissector_target(flow_dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS, target_container); - memcpy(key_eth_addrs, ð->h_dest, sizeof(*key_eth_addrs)); + memcpy(key_eth_addrs, eth, sizeof(*key_eth_addrs)); } proto_again: -- 2.39.5