Re: [Update][PATCH 1/5] ACPI / scan: Prevent device add uevents fromracing with user space

[Greg Kroah-Hartman]

On Wed, Jan 23, 2013 at 06:58:31PM +0100, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> 
> ACPI core adds sysfs device files after the given devices have been
> registered with device_register(), which is not appropriate, because
> it may lead to race conditions with user space tools using those
> files.
> 
> Fix the problem by delaying the KOBJ_ADD uevent for ACPI devices
> until after all of the devices' sysfs files have been created.
> 
> This also fixes a use-after-free in acpi_device_unregister().
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>

Nice fix.

Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
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