From: Jakub Kicinski <kuba@kernel.org>
To: Qasim Ijaz <qasdev00@gmail.com>
Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
pabeni@redhat.com, horms@kernel.org, linux-usb@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
syzbot <syzbot+3361c2d6f78a3e0892f9@syzkaller.appspotmail.com>,
stable@vger.kernel.org
Subject: Re: [PATCH 1/4] net: fix uninitialised access in mii_nway_restart()
Date: Tue, 25 Mar 2025 06:33:07 -0700 [thread overview]
Message-ID: <20250325063307.15336182@kernel.org> (raw)
In-Reply-To: <20250319112156.48312-2-qasdev00@gmail.com>
On Wed, 19 Mar 2025 11:21:53 +0000 Qasim Ijaz wrote:
> --- a/drivers/net/mii.c
> +++ b/drivers/net/mii.c
> @@ -464,6 +464,8 @@ int mii_nway_restart (struct mii_if_info *mii)
>
> /* if autoneg is off, it's an error */
> bmcr = mii->mdio_read(mii->dev, mii->phy_id, MII_BMCR);
> + if (bmcr < 0)
> + return bmcr;
>
> if (bmcr & BMCR_ANENABLE) {
> bmcr |= BMCR_ANRESTART;
We error check just one mdio_read() but there's a whole bunch of them
in this file. What's the expected behavior then? Are all of them buggy?
This patch should be split into core and driver parts.
--
pw-bot: cr
next prev parent reply other threads:[~2025-03-25 13:33 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-19 11:21 [PATCH 0/4] net: fix bugs and error handling in qinheng ch9200 driver and mii interface Qasim Ijaz
2025-03-19 11:21 ` [PATCH 1/4] net: fix uninitialised access in mii_nway_restart() Qasim Ijaz
2025-03-20 13:48 ` Simon Horman
2025-03-25 13:33 ` Jakub Kicinski [this message]
2025-04-10 22:15 ` Qasim Ijaz
2025-04-10 23:17 ` Jakub Kicinski
2025-04-11 1:12 ` Andrew Lunn
2025-04-12 18:30 ` Qasim Ijaz
2025-03-19 11:21 ` [PATCH 2/4] net: ch9200: remove extraneous return in control_write() to propagate failures Qasim Ijaz
2025-03-20 13:48 ` Simon Horman
2025-03-19 11:21 ` [PATCH 3/4] net: ch9200: improve error handling in get_mac_address() Qasim Ijaz
2025-03-20 13:38 ` Markus Elfring
2025-03-20 13:49 ` Simon Horman
2025-03-19 11:21 ` [PATCH 4/4] net: ch9200: add error handling in ch9200_bind() Qasim Ijaz
2025-03-20 13:49 ` Simon Horman
2025-03-20 14:00 ` Markus Elfring
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