From: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
To: unlisted-recipients:; (no To-header on input)
Cc: error27@gmail.com,
Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>,
Alexander Aring <alex.aring@gmail.com>,
Stefan Schmidt <stefan@datenfreihafen.org>,
Miquel Raynal <miquel.raynal@bootlin.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Marcel Holtmann <marcel@holtmann.org>,
Harry Morris <harrymorris12@gmail.com>,
linux-wpan@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH next] ca8210: Fix unsigned mac_len comparison with zero in ca8210_skb_tx()
Date: Mon, 6 Mar 2023 11:18:24 -0800 [thread overview]
Message-ID: <20230306191824.4115839-1-harshit.m.mogalapalli@oracle.com> (raw)
mac_len is of type unsigned, which can never be less than zero.
mac_len = ieee802154_hdr_peek_addrs(skb, &header);
if (mac_len < 0)
return mac_len;
Change this to type int as ieee802154_hdr_peek_addrs() can return negative
integers, this is found by static analysis with smatch.
Fixes: ded845a781a5 ("ieee802154: Add CA8210 IEEE 802.15.4 device driver")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
---
Only compile tested.
---
drivers/net/ieee802154/ca8210.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c
index 0b0c6c0764fe..d0b5129439ed 100644
--- a/drivers/net/ieee802154/ca8210.c
+++ b/drivers/net/ieee802154/ca8210.c
@@ -1902,10 +1902,9 @@ static int ca8210_skb_tx(
struct ca8210_priv *priv
)
{
- int status;
struct ieee802154_hdr header = { };
struct secspec secspec;
- unsigned int mac_len;
+ int mac_len, status;
dev_dbg(&priv->spi->dev, "%s called\n", __func__);
--
2.38.1
next reply other threads:[~2023-03-06 19:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-06 19:18 Harshit Mogalapalli [this message]
2023-03-07 0:06 ` [PATCH next] ca8210: Fix unsigned mac_len comparison with zero in ca8210_skb_tx() Alexander Aring
2023-03-07 8:42 ` Simon Horman
2023-03-07 23:29 ` Alexander Aring
2023-03-16 16:33 ` Stefan Schmidt
2023-03-16 16:31 ` Stefan Schmidt
2023-03-16 19:02 ` Harshit Mogalapalli
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