[PATCH AUTOSEL 5.1 005/219] wil6210: fix potential out-of-bounds read

[Sasha Levin]

From: "Gustavo A. R. Silva" <gust...@embeddedor.com>

[ Upstream commit bfabdd6997323adbedccb13a3fed1967fb8cf8f5 ]

Notice that *rc* can evaluate to up to 5, include/linux/netdevice.h:

enum gro_result {
        GRO_MERGED,
        GRO_MERGED_FREE,
        GRO_HELD,
        GRO_NORMAL,
        GRO_DROP,
        GRO_CONSUMED,
};
typedef enum gro_result gro_result_t;

In case *rc* evaluates to 5, we end up having an out-of-bounds read
at drivers/net/wireless/ath/wil6210/txrx.c:821:

        wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n",
                     len, gro_res_str[rc]);

Fix this by adding element "GRO_CONSUMED" to array gro_res_str.

Addresses-Coverity-ID: 1444666 ("Out-of-bounds read")
Fixes: 194b482b5055 ("wil6210: Debug print GRO Rx result")
Signed-off-by: Gustavo A. R. Silva <gust...@embeddedor.com>
Reviewed-by: Maya Erez <me...@codeaurora.org>
Signed-off-by: Kalle Valo <kv...@codeaurora.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/net/wireless/ath/wil6210/txrx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/wil6210/txrx.c 
b/drivers/net/wireless/ath/wil6210/txrx.c
index 4ccfd1404458..d74837cce67f 100644
--- a/drivers/net/wireless/ath/wil6210/txrx.c
+++ b/drivers/net/wireless/ath/wil6210/txrx.c
@@ -750,6 +750,7 @@ void wil_netif_rx_any(struct sk_buff *skb, struct 
net_device *ndev)
                [GRO_HELD]              = "GRO_HELD",
                [GRO_NORMAL]            = "GRO_NORMAL",
                [GRO_DROP]              = "GRO_DROP",
+               [GRO_CONSUMED]          = "GRO_CONSUMED",
        };
 
        wil->txrx_ops.get_netif_rx_params(skb, &cid, &security);
-- 
2.20.1