On 08/19/2018 07:29 AM, Lukas Wunner wrote: > Hotplug drivers cannot declare their hotplug_slot_ops const, making them > attractive targets for attackers, because upon registration of a hotplug > slot, __pci_hp_initialize() writes to the "owner" and "mod_name" members > in that struct. > > Fix by moving these members to struct hotplug_slot and constify every > driver's hotplug_slot_ops except for pciehp. > > pciehp constructs its hotplug_slot_ops at runtime based on the PCIe > port's capabilities, hence cannot declare them const. It can be > converted to __write_rarely once that's mainlined: > http://www.openwall.com/lists/kernel-hardening/2016/11/16/3 > > Signed-off-by: Lukas Wunner <lukas@xxxxxxxxx> > Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> > Cc: Len Brown <lenb@xxxxxxxxxx> > Cc: Scott Murray <scott@xxxxxxxxxxxx> > Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> > Cc: Paul Mackerras <paulus@xxxxxxxxx> > Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx> > Cc: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx> > Cc: Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx> > Cc: Gerald Schaefer <gerald.schaefer@xxxxxxxxxx> > Cc: Corentin Chary <corentin.chary@xxxxxxxxx> > Cc: Darren Hart <dvhart@xxxxxxxxxxxxx> > Cc: Andy Shevchenko <andy@xxxxxxxxxxxxx> > --- With regards to drivers/pci/hotplug/rpa* Acked-by: Tyrel Datwyler <tyreld@xxxxxxxxxxxxxxxxxx>
