Hi again, On Tue, 2024-06-11 at 09:17 +0100, Christopher Obbard wrote: > Hi Jan, > > On Tue, 2024-06-11 at 07:10 +0200, Jan Kiszka wrote: > > Chris, you could check if already the vanilla stub fails to run as EFI > > binary. It should at least print "Unified kernel stub (EFI Boot Guard > > v0.17)" and "Missing .kernel section" when there is no kernel linked to > > it. This is to rule out potential problems of the bg_gen_unified_kernel > > script. > > Launching the kernel stub binary directly in qemu (v8.2.4) using the command > in my original message, the stub seems to attempt to print something to the > EFI console, but it ends up showing as many characters of whitespace and > simply quitting after 5s. > > I guess this shows the bg_gen_unified_kernel script is OK and the issue > falls > in the stub? > > For the record, the efibootguard binary itself seems to work just fine.
I also built efibootguard v0.13 (e.g the version which works in bookworm) in my local debian unstable environment. The built kernel stub fails in the same way I reported. So I believe this narrows things down to the cross-compiler, some library or something else in the environment. Thanks!
