From 48c77bdf729a91fa7f65765d3f60f01e0ac320c5 Mon Sep 17 00:00:00 2001 From: Volodymyr Mytnyk Date: Fri, 18 Feb 2022 14:29:11 +0200 Subject: [PATCH] net: prestera: acl: fix 'client_map' buff overflow smatch warnings: drivers/net/ethernet/marvell/prestera/prestera_acl.c:103 prestera_acl_chain_to_client() error: buffer overflow 'client_map' 3 <= 3 prestera_acl_chain_to_client(u32 chain_index, ...) ... u32 client_map[] = { PRESTERA_HW_COUNTER_CLIENT_LOOKUP_0, PRESTERA_HW_COUNTER_CLIENT_LOOKUP_1, PRESTERA_HW_COUNTER_CLIENT_LOOKUP_2 }; if (chain_index > ARRAY_SIZE(client_map)) ... Fixes: fa5d824ce5dd ("net: prestera: acl: add multi-chain support offload") Reported-by: kernel test robot Reported-by: Dan Carpenter Signed-off-by: Volodymyr Mytnyk Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/prestera/prestera_acl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/prestera/prestera_acl.c b/drivers/net/ethernet/marvell/prestera/prestera_acl.c index 06303e3..e4af8a5 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_acl.c +++ b/drivers/net/ethernet/marvell/prestera/prestera_acl.c @@ -97,7 +97,7 @@ int prestera_acl_chain_to_client(u32 chain_index, u32 *client) PRESTERA_HW_COUNTER_CLIENT_LOOKUP_2 }; - if (chain_index > ARRAY_SIZE(client_map)) + if (chain_index >= ARRAY_SIZE(client_map)) return -EINVAL; *client = client_map[chain_index]; -- 2.7.4