From: Nathan Huckleberry <nhuck@google.com>
To: unlisted-recipients:; (no To-header on input)
Cc: "Nathan Huckleberry" <nhuck@google.com>,
"Dan Carpenter" <error27@gmail.com>,
llvm@lists.linux.dev, "Łukasz Stelmach" <l.stelmach@samsung.com>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Nathan Chancellor" <nathan@kernel.org>,
"Nick Desaulniers" <ndesaulniers@google.com>,
"Tom Rix" <trix@redhat.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] net: ax88796c: Fix return type of ax88796c_start_xmit
Date: Mon, 12 Sep 2022 12:40:30 -0700 [thread overview]
Message-ID: <20220912194031.808425-1-nhuck@google.com> (raw)
The ndo_start_xmit field in net_device_ops is expected to be of type
netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev).
The mismatched return type breaks forward edge kCFI since the underlying
function definition does not match the function hook definition.
The return type of ax88796c_start_xmit should be changed from int to
netdev_tx_t.
Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1703
Cc: llvm@lists.linux.dev
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
---
drivers/net/ethernet/asix/ax88796c_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/asix/ax88796c_main.c b/drivers/net/ethernet/asix/ax88796c_main.c
index 6ba5b024a7be..f1d610efd69e 100644
--- a/drivers/net/ethernet/asix/ax88796c_main.c
+++ b/drivers/net/ethernet/asix/ax88796c_main.c
@@ -381,7 +381,7 @@ static int ax88796c_hard_xmit(struct ax88796c_device *ax_local)
return 1;
}
-static int
+static netdev_tx_t
ax88796c_start_xmit(struct sk_buff *skb, struct net_device *ndev)
{
struct ax88796c_device *ax_local = to_ax88796c_device(ndev);
--
2.37.2.789.g6183377224-goog
next reply other threads:[~2022-09-12 19:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20220912201920eucas1p1ff844ab7a87a01fdb0ae98295e103147@eucas1p1.samsung.com>
2022-09-12 19:40 ` Nathan Huckleberry [this message]
2022-09-12 20:19 ` [PATCH] net: ax88796c: Fix return type of ax88796c_start_xmit Lukasz Stelmach
2022-09-20 1:40 ` patchwork-bot+netdevbpf
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