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, "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Karol Gugala <kgugala@antmicro.com>,
Mateusz Holenko <mholenko@antmicro.com>,
Gabriel Somlo <gsomlo@gmail.com>, Joel Stanley <joel@jms.id.au>,
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: ethernet: litex: Fix return type of liteeth_start_xmit
Date: Mon, 12 Sep 2022 12:53:07 -0700 [thread overview]
Message-ID: <20220912195307.812229-1-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 liteeth_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/litex/litex_liteeth.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/litex/litex_liteeth.c b/drivers/net/ethernet/litex/litex_liteeth.c
index fdd99f0de424..35f24e0f0934 100644
--- a/drivers/net/ethernet/litex/litex_liteeth.c
+++ b/drivers/net/ethernet/litex/litex_liteeth.c
@@ -152,7 +152,8 @@ static int liteeth_stop(struct net_device *netdev)
return 0;
}
-static int liteeth_start_xmit(struct sk_buff *skb, struct net_device *netdev)
+static netdev_tx_t liteeth_start_xmit(struct sk_buff *skb,
+ struct net_device *netdev)
{
struct liteeth *priv = netdev_priv(netdev);
void __iomem *txbuffer;
--
2.37.2.789.g6183377224-goog
next reply other threads:[~2022-09-12 19:53 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-12 19:53 Nathan Huckleberry [this message]
2022-09-13 22:31 ` [PATCH] net: ethernet: litex: Fix return type of liteeth_start_xmit Nathan Chancellor
2022-09-14 12:06 ` Gabriel L. Somlo
2022-09-20 1:40 ` patchwork-bot+netdevbpf
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