[PATCH] efi: Suppress spurious "Couldn't get size" error

Takashi Iwai tiwai at suse.de
Mon Feb 17 16:10:20 UTC 2020


On Mon, 17 Feb 2020 17:06:57 +0100,
Ard Biesheuvel wrote:
> 
> On Mon, 17 Feb 2020 at 16:45, Takashi Iwai <tiwai at suse.de> wrote:
> >
> > The current efi code emits the error message like
> >    Couldn't get size: 0x800000000000000e
> > on various Dell and other machines.  Although the whole problem is the
> > buggy firmware, showing this as an error level is rather annoying, as
> > the error message appears over the boot splash.  Basically this is the
> > result of missing entry and we have no explicit way to fix it for such
> > a firmware problem, the error message may be suppressed.
> >
> > This patch changes the error print condition and suppresses the error
> > message if status is EFI_NOT_FOUND.  It's a partial patch from the
> > more comprehensive one Joey Lee submitted in the past.
> >
> > Link: https://lore.kernel.org/linux-efi/20190322103350.27764-2-jlee@suse.com/
> > Cc: Joey Lee <jlee at suse.com>
> > Signed-off-by: Takashi Iwai <tiwai at suse.de>
> 
> Hello Takashi,
> 
> Javier sent a more comprehensive fix for this today. The problem is
> not buggy firmware, but buggy kernel :-)
> (the code assumes that all systems boot via shim, and that certain EFI
> variables are therefore guaranteed to exist, which is not the case)
> 
> https://lore.kernel.org/linux-efi/CAKv+Gu-a5Bo9i=K55pa3jEXRq-u5JYVGp1jFEE=UY5B=6eUkRQ@mail.gmail.com

Awesome, then please scratch mine.
Thanks!


Takashi



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