Re: [PATCH 10/20] alpha/PCI: Add security_locked_down() check to pci_mmap_resource()

Krzysztof Wilczyński
2026-04-10T11:10:11Z

Hello,

> > Currently, Alpha's pci_mmap_resource() does not check
> > security_locked_down(LOCKDOWN_PCI_ACCESS) before allowing
> > userspace to mmap PCI BARs.
> >
> > The generic version has had this check since commit eb627e17727e
> > ("PCI: Lock down BAR access when the kernel is locked down") to
> > prevent DMA attacks when the kernel is locked down.
> >
> > Add the same check to Alpha's pci_mmap_resource().
> >
> > Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
>
> Maybe add Fixes: eb627e17727e ...

Good call, will do!

Thank you!

Krzysztof