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From: Arvind Sankar <nivedita@alum.mit.edu>
To: Sergey Shatunov <me@prok.pw>
Cc: nivedita@alum.mit.edu, bp@alien8.de, hpa@zytor.com,
	linux-kernel@vger.kernel.org, mingo@redhat.com,
	tglx@linutronix.de, x86@kernel.org, linux-efi@vger.kernel.org
Subject: Re: [PATCH 1/2] x86/boot/compressed/64: Remove .bss/.pgtable from bzImage
Date: Sun, 5 Apr 2020 19:18:45 -0400	[thread overview]
Message-ID: <20200405231845.GA3095309@rani.riverdale.lan> (raw)
In-Reply-To: <20200405154245.11972-1-me@prok.pw>

On Sun, Apr 05, 2020 at 10:42:46PM +0700, Sergey Shatunov wrote:
> This patch causes some strange things happens with my laptop.
> 
> Cold boot crashed in some early initilization logic with message 'Failed to execute /esp/.../linux.efi: Buffer Too Small'.
> After couple reboots into firmware setup (bios) or hot reboot from other working kernel (without that commit) helps it to boot.
> During bisecting couple times I saw different message: 'exit_efi() failed; efi_main() failed', but above tricks helps it too.
> So bisect points to that commit and I tried to compile kernel with that commit reverted and it works flawlessly.
> 
> Some notes about my setup:
> Kernel tree I used: Torvalds git (which recently pulls that commit).
> Kernel itself with initrd and cmdline packed into systemd-boot stub (probably here can be issues too, not sure).
> Secure boot enabled with custom keyring.
> 
> I can provide more info or change my setup (for example get rid of systemd-boot stub) if needed for sure.

I'm not familiar with systemd-boot: when you say systemd-boot stub, is
that something different from the kernel's EFI_STUB option? Or is it
just a kernel with EFI_STUB enabled and with builtin initramfs + builtin
cmdline? If it is different, can you point me to the tool that creates
it?

The first error message you mention should be from systemd-boot after
the kernel exits with an EFI_BUFFER_TOO_SMALL error status. The second
one -- is that 'exit_boot() failed' rather than 'exit_efi() failed'? I
can't find the latter string in the tree.

Can you also specify a commit tag that is broken + works with this patch
reverted, just to make sure we're looking at the same code?

Thanks

Cc linux-efi.

       reply	other threads:[~2020-04-05 23:18 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200109150218.16544-1-nivedita@alum.mit.edu>
     [not found] ` <20200405154245.11972-1-me@prok.pw>
2020-04-05 23:18   ` Arvind Sankar [this message]
2020-04-06  0:00     ` [PATCH 1/2] x86/boot/compressed/64: Remove .bss/.pgtable from bzImage Sergey Shatunov
2020-04-06  3:51       ` Arvind Sankar
2020-04-06  7:32         ` Ard Biesheuvel
2020-04-06  8:47           ` Borislav Petkov
2020-04-06  9:11             ` Ard Biesheuvel
2020-04-06 11:20               ` Borislav Petkov
2020-04-06 13:22                 ` Arvind Sankar
2020-04-06 13:29                   ` Ard Biesheuvel
2020-04-06 16:01                     ` Arvind Sankar
2020-04-06 16:22                       ` Ard Biesheuvel
2020-04-06 16:52                         ` Arvind Sankar
2020-04-06 16:59                           ` Ard Biesheuvel
2020-04-06 18:06                             ` [PATCH 1/2] efi/x86: Move efi stub globals from .bss to .data Arvind Sankar
2020-04-06 18:06                               ` [PATCH 2/2] efi/x86: Always relocate the kernel for EFI handover entry Arvind Sankar
2020-04-06 18:29                               ` [PATCH 1/2] efi/x86: Move efi stub globals from .bss to .data Ard Biesheuvel
2020-04-08  7:43                               ` Dave Young
2020-04-08  7:49                                 ` Ard Biesheuvel
2020-04-09 14:39                                   ` Arvind Sankar
2020-04-09 14:47                                     ` Ard Biesheuvel
2020-04-09 16:35                                       ` Arvind Sankar
2020-04-10 14:47                                         ` Arvind Sankar
2020-04-10 15:26                                           ` Ard Biesheuvel
2020-04-14 14:57                                             ` Daniel Kiper
2020-04-10 11:26                               ` Thomas Meyer
2020-04-10 14:38                                 ` Arvind Sankar
2020-04-11  8:50                                   ` Thomas Meyer
2020-04-06 17:21                     ` [PATCH 1/2] x86/boot/compressed/64: Remove .bss/.pgtable from bzImage Borislav Petkov
2020-04-06  8:44     ` Ard Biesheuvel
2020-04-06 12:36       ` Sergey Shatunov
2020-04-06 13:20         ` Ard Biesheuvel

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