From: Jiri Pirko <jpirko@redhat.com>
To: Dan Carpenter <error27@gmail.com>
Cc: netdev@vger.kernel.org, Florian Fainelli <florian@openwrt.org>,
"David S. Miller" <davem@davemloft.net>,
Ralf Baechle <ralf@linux-mips.org>,
Stefan Weil <weil@mail.berlios.de>,
kernel-janitors@vger.kernel.org
Subject: Re: [patch] cpmac: use after free
Date: Wed, 3 Mar 2010 09:59:58 +0100 [thread overview]
Message-ID: <20100303085957.GA2961@psychotron.lab.eng.brq.redhat.com> (raw)
In-Reply-To: <20100303084610.GH5086@bicker>
Wed, Mar 03, 2010 at 09:46:10AM CET, error27@gmail.com wrote:
>The original code dereferenced "cpmac_mii" after calling
>"mdiobus_free(cpmac_mii);"
>
>Signed-off-by: Dan Carpenter <error27@gmail.com>
>---
>Found by a static checker and not tested. Sorry. :/
>
>diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c
>index b85c81f..9d48942 100644
>--- a/drivers/net/cpmac.c
>+++ b/drivers/net/cpmac.c
>@@ -1290,8 +1290,8 @@ void __devexit cpmac_exit(void)
> {
> platform_driver_unregister(&cpmac_driver);
> mdiobus_unregister(cpmac_mii);
>- mdiobus_free(cpmac_mii);
> iounmap(cpmac_mii->priv);
>+ mdiobus_free(cpmac_mii);
> }
>
> module_init(cpmac_init);
Looks good. Thanks.
Reviewed-by: Jiri Pirko <jpirko@redhat.com>
next prev parent reply other threads:[~2010-03-03 9:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-03 8:46 [patch] cpmac: use after free Dan Carpenter
2010-03-03 8:59 ` Jiri Pirko [this message]
2010-03-03 9:07 ` David Miller
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