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    SubjectRe: [Update][PATCH 1/5] ACPI / scan: Prevent device add uevents from racing with user space
    On Wed, Jan 23, 2013 at 06:58:31PM +0100, Rafael J. Wysocki wrote:
    > From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    >
    > 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@intel.com>

    Nice fix.

    Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>


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