From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Wang Hai <wanghai26@huawei.com>
Cc: davem@davemloft.net, idosch@mellanox.com, eric.dumazet@gmail.com,
alexander.h.duyck@intel.com, tyhicks@canonical.com,
f.fainelli@gmail.com, viro@zeniv.linux.org.uk,
amritha.nambiar@intel.com, joe@perches.com,
dmitry.torokhov@gmail.com, stephen@networkplumber.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] net-sysfs: Fix memory leak in netdev_register_kobject
Date: Fri, 12 Apr 2019 11:38:35 +0300 [thread overview]
Message-ID: <20190412083835.GG9224@smile.fi.intel.com> (raw)
In-Reply-To: <20190412203634.30392-3-wanghai26@huawei.com>
On Fri, Apr 12, 2019 at 04:36:34PM -0400, Wang Hai wrote:
> +error_register:
> + device_del(dev);
> +error_device_add:
> + kfree_const(dev->kobj.name);
> return error;
When put_device() will be called on this it will go to double free (in case of
dynamically allocated dev->kobj.name.
Al Viro and me suggested earlier that the correct fix is to call put_device()
in a places where it is appropriate.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2019-04-12 8:38 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-12 20:36 [PATCH 0/2] net-sysfs: revert wrong bugfix and re-fix Wang Hai
2019-04-12 20:36 ` [PATCH 1/2] Revert "net-sysfs: Fix memory leak in netdev_register_kobject" Wang Hai
2019-04-12 8:38 ` Andy Shevchenko
2019-04-15 20:10 ` David Miller
2019-04-12 20:36 ` [PATCH 2/2] net-sysfs: Fix memory leak in netdev_register_kobject Wang Hai
2019-04-12 8:38 ` Andy Shevchenko [this message]
2019-04-12 12:08 ` wanghai (M)
2019-04-12 12:50 ` Al Viro
2019-04-12 13:03 ` Eric Dumazet
2019-04-12 13:20 ` Andy Shevchenko
2019-04-12 13:33 ` wanghai (M)
2019-04-12 13:28 ` wanghai (M)
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