netdev - Re: [PATCH v2] phy: Fix phy_device

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Thu, 28 Feb 2013 15:38:43 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	oss@...at.biz
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH v2] phy: Fix phy_device_free memory leak

From: Petr Malat <oss@...at.biz>
Date: Thu, 28 Feb 2013 12:01:52 +0100

> 
> From: Petr Malat <oss@...at.biz>
> 
> Fix memory leak in phy_device_free() for the case when phy_device*
> returned by phy_device_create() is not registered in the system.
> 
> Bug description:
> phy_device_create() sets name of kobject using dev_set_name(), which 
> allocates memory using kvasprintf(), but this memory isn't freed if 
> the underlying device isn't registered properly, because kobject_cleanup()
> is not called in that case. This can happen (and actually is happening on 
> our machines) if phy_device_register(), called by mdiobus_scan(), fails. 
> 
> Patch description:
> Embedded struct device is initialized in phy_device_create() and it 
> counterpart phy_device_free() just drops one reference to the device,
> which leads to proper deinitialization including releasing the kobject 
> name memory.
> 
> Signed-off-by: Petr Malat <oss@...at.biz>

This looks great, applied, thanks.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html