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From: Dan Carpenter <dan.carpenter@oracle.com>
To: "Russell King (Oracle)" <linux@armlinux.org.uk>
Cc: Pavel Skripkin <paskripkin@gmail.com>,
	Yanfei Xu <yanfei.xu@windriver.com>,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	andrew@lunn.ch, hkallweit1@gmail.com, davem@davemloft.net,
	kuba@kernel.org, p.zabel@pengutronix.de,
	syzbot+398e7dc692ddbbb4cfec@syzkaller.appspotmail.com,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	Dongliang Mu <mudongliangabcd@gmail.com>
Subject: Re: [PATCH] net: mdiobus: Fix memory leak in __mdiobus_register
Date: Tue, 28 Sep 2021 16:52:07 +0300	[thread overview]
Message-ID: <20210928135207.GP2083@kadam> (raw)
In-Reply-To: <YVMRWNDZDUOvQjHL@shell.armlinux.org.uk>

On Tue, Sep 28, 2021 at 01:58:00PM +0100, Russell King (Oracle) wrote:
>
> This thread seems to be getting out of hand.

The thread was closed.  We need to revert Yanfei's patch and apply
Pavel's patch.  He's going to resend.

> So, I would suggest a simple fix is to set bus->state to
> MDIOBUS_UNREGISTERED immediately _after_ the successful
> device_register().

Not after.  It has to be set to MDIOBUS_UNREGISTERED if device_register()
fails, otherwise there will still be a leak.

Adding a comment is a good idea.

regards,
dan carpenter


  reply	other threads:[~2021-09-28 13:53 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-26  4:53 Yanfei Xu
2021-09-26 15:34 ` Andrew Lunn
2021-09-27 12:30 ` patchwork-bot+netdevbpf
2021-09-28  8:55 ` Dan Carpenter
2021-09-28  9:26   ` Dan Carpenter
2021-09-28  9:45     ` Pavel Skripkin
2021-09-28 10:39       ` Dan Carpenter
2021-09-28 10:46         ` Pavel Skripkin
2021-09-28 10:55           ` Dan Carpenter
2021-09-28 11:04             ` Pavel Skripkin
2021-09-28 10:59           ` Dan Carpenter
2021-09-28 11:06             ` Pavel Skripkin
2021-09-28 11:09               ` Pavel Skripkin
2021-09-28 11:30                 ` Dan Carpenter
2021-09-28 11:45                   ` Pavel Skripkin
2021-09-28 12:23                     ` Dan Carpenter
2021-09-28 12:58                   ` Russell King (Oracle)
2021-09-28 13:52                     ` Dan Carpenter [this message]
2021-09-28 15:41                       ` Russell King (Oracle)
2021-09-28 15:48                         ` Dongliang Mu
2021-09-29  2:05                           ` Xu, Yanfei
2021-09-28 13:11 ` Russell King (Oracle)
2021-09-29 21:31 ` Denis Efremov

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