On Sat, 25 May 2019 at 04:36, Gen Zhang <blackgod016574@xxxxxxxxx> wrote: > > On Fri, May 24, 2019 at 06:07:10PM +0200, Ard Biesheuvel wrote: > > Apologies for only spotting this now, but I seem to have given some bad advice. > > > > efi_call_phys_prolog() in efi_64.c will also return NULL if > > (!efi_enabled(EFI_OLD_MEMMAP)), but this is not an error condition. So > > that occurrence has to be updated: please return efi_mm.pgd instead. > Thanks for your reply, Ard. You mean that we should return efi_mm.pgd > when allcoation fails? And we should delete return EFI_ABORTED on the > caller site, right? In that case, how should we handle the NULL pointer > returned by condition if(!efi_enabled(EFI_OLD_MEMMAP)) on the caller > site? > No, the other way around. I have already updated the patch, so don't worry about it. https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git/commit/?h=urgent&id=d2dc2bc7b60b936b95da4b04c2912c02974c3e9f
