From: Lukasz Stelmach <l.stelmach@samsung.com>
To: Nathan Huckleberry <nhuck@google.com>
Cc: 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>,
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: Re: [PATCH] net: ax88796c: Fix return type of ax88796c_start_xmit
Date: Mon, 12 Sep 2022 22:19:07 +0200 [thread overview]
Message-ID: <dleftjo7vkfiro.fsf%l.stelmach@samsung.com> (raw)
In-Reply-To: <20220912194031.808425-1-nhuck@google.com> (Nathan Huckleberry's message of "Mon, 12 Sep 2022 12:40:30 -0700")
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It was <2022-09-12 pon 12:40>, when Nathan Huckleberry wrote:
> 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: [...]
> 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(-)
>
Acked-by: Lukasz Stelmach <l.stelmach@samsung.com>
> 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);
--
Łukasz Stelmach
Samsung R&D Institute Poland
Samsung Electronics
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next prev parent reply other threads:[~2022-09-12 20:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-12 19:40 Nathan Huckleberry
[not found] ` <CGME20220912201920eucas1p1ff844ab7a87a01fdb0ae98295e103147@eucas1p1.samsung.com>
2022-09-12 20:19 ` Lukasz Stelmach [this message]
2022-09-20 1:40 ` patchwork-bot+netdevbpf
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