linux-kernel - Re: [REGRESSION] "efi: efistub: Convert into static library" and preparation patches

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 22 Sep 2014 22:07:07 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Josh Boyer <jwboyer@...oraproject.org>
Cc:	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Michael Brown <mbrown@...systems.co.uk>,
	Maarten Lankhorst <maarten.lankhorst@...onical.com>,
	Ulf Winkelvos <ulf@...kelvos.de>,
	Matt Fleming <matt.fleming@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	Seth Forshee <seth.forshee@...onical.com>,
	Matthew Garrett <mjg59@...f.ucam.org>
Subject: Re: [REGRESSION] "efi: efistub: Convert into static library" and
 preparation patches

On Mon, 22 Sep, at 02:44:23PM, Josh Boyer wrote:
> 
> This wound up in rc6 as commit
> 9cb0e394234d244fe5a97e743ec9dd7ddff7e64b.  That caused all the EFI
> machines I have to no longer boot.  They hang after the 'setup_efi_pci
> failed' message and I get nothing from the kernel at all, even with
> earlyprintk, etc.
> 
> I did a git bisect between rc5 and rc6 and it points to this commit.
> This is a typical Fedora setup, which is EFI->shim->grub2->kernel.  It
> broke the boot on multiple machines I have, and I've confirmed that a
> revert on top of rc6 makes things boot again on both my macbook and my
> tunnel mountain machine.  I'll be testing it on my celeron and i7
> based NUC machines as well, but I expect similar results.

Thanks for doing the bisect.

I've now booted with this commit using grub2 and it boots fine on Qemu.
I don't have a shim setup, but I'll look at sorting one out.

> Is there something I can do to help debug why this is failing on this
> kind of setup?  Config and bisect log are attached below for the
> macbook I used for the bisect.

Could you provide the dmesg of a working boot? I'm curious to know more
about your memory map layout.

Other than that, trying to diagnose exactly where it hangs during
booting would be useful.

-- 
Matt Fleming, Intel Open Source Technology Center
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/