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From: | Tobias Powalowski |
Subject: | Re: Bad shim signature on kernel loading with patchset from 25.05.2023 and up |
Date: | Mon, 26 Jun 2023 09:49:19 +0200 |
On Thu, Jun 22, 2023 at 3:00 PM Tobias Powalowski via Grub-devel
<grub-devel@gnu.org> wrote:
>
> Hi,
> just curious since the patchset from 25.05.2023, I cannot use Secure Boot on my project anymore. The kernel hash cannot be validated anymore and shim bails out with bad shim signature.
> Any help would be appreciated.
> greetings
> tpowa
According to shim documentation the shim lock protocol should use SysV
abi instead of MS abi.
So could you try if it solves your issue if you remove
"__grub_efi_api" from the verify function of
grub_efi_shim_lock_protocol in include/grub/efi/api.h in around line
1780
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