linux-kernel - Re: Kernel V5.7-rc1 doesn't boot (EFI?)

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Date:   Tue, 14 Apr 2020 18:32:32 +0200
From:   Jörg Otte <jrg.otte@...il.com>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     linux-efi <linux-efi@...r.kernel.org>,
        Arvind Sankar <nivedita@...m.mit.edu>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: Kernel V5.7-rc1 doesn't boot (EFI?)

Am Di., 14. Apr. 2020 um 12:50 Uhr schrieb Ard Biesheuvel <ardb@...nel.org>:
>
> On Tue, 14 Apr 2020 at 12:40, Jörg Otte <jrg.otte@...il.com> wrote:
> >
> > Booting my notebook with kernel V57-rc1 I get following
> > display:
> >
> > exit_boot() failed!
> > efi_main() failed!
> > StartImage failed: Buffer Too Small
> >
> > Booting Kernel V5.6 works well.
> >
> > From dmesg (kernel V5.6):
> > efi: EFI v2.31 by Phoenix Technologies Ltd.
> > efi:  ACPI=0xdcffe000  ACPI 2.0=0xdcffe014  SMBIOS=0xdce80000  RNG=0xdc3cd198
> > efi: seeding entropy pool
> > efi: [Firmware Bug]: Invalid EFI memory map entries:
> > efi: mem47: [Reserved           |   |  |  |  |  |  |  |  |   |  |  |
> > |  ] range=[0x0000000000000000-0x0000000000000000] (invalid)
> > efi: mem48: [Reserved           |   |  |  |  |  |  |  |  |   |  |  |
> > |  ] range=[0x0000000000000000-0x0000000000000000] (invalid)
> > efi: mem49: [Reserved           |   |  |  |  |  |  |  |  |   |  |  |
> > |  ] range=[0x0000000000000000-0x0000000000000000] (invalid)
> > efi: mem50: [Reserved           |   |  |  |  |  |  |  |  |   |  |  |
> > |  ] range=[0x0000000000000000-0x0000000000000000] (invalid)
> > efi: mem51: [Reserved           |   |  |  |  |  |  |  |  |   |  |  |
> > |  ] range=[0x0000000000000000-0x0000000000000000] (invalid)
> > efi: Removing 5 invalid memory map entries.
> >
>
> Thanks for the report.
>
> Can you try booting with efi=no_disable_early_pci_dma passed via the
> kernel command line? [*]
>
Yes, that works!

> If that does not help, can you try to reproduce with this branch?
>
> https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=efi/urgent

Should I give that branch a try anyway?

Thanks, Jörg