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Date: Thu, 2 Jun 2022 14:32:46 -0700
From: Nathan Chancellor <nathan@kernel.org>
To: Thomas Sattler <sattler@med.uni-frankfurt.de>
Cc: stable@vger.kernel.org, regressions@lists.linux.dev
Subject: Re: boot loop since 5.17.6
Message-ID: <YpksflOG2Y1Xng89@dev-arch.thelio-3990X>
References: <11495172-41dd-5c44-3ef6-8d3ff3ebd1b2@med.uni-frankfurt.de>
 <c3b370a8-193e-329b-c73a-1371bd62edf3@med.uni-frankfurt.de>
 <181a6369-e373-b020-2059-33fb5161d8d3@med.uni-frankfurt.de>
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In-Reply-To: <181a6369-e373-b020-2059-33fb5161d8d3@med.uni-frankfurt.de>

On Thu, Jun 02, 2022 at 09:24:18PM +0200, Thomas Sattler wrote:
> with these three diffs reverted, I was able to boot
> all affected 5.17.x kernels (x={6,7,8,9,10,11,12})
> 
> 
> 
> Am 02.06.22 um 18:42 schrieb Thomas Sattler:
> > some more information:
> > 
> > $ cat /proc/version
> > Linux version 5.17.5 (root@dragon) (x86_64-pc-linux-gnu-gcc (Gentoo
> > 11.2.1_p20220115 p4) 11.2.1 20220115, GNU ld (Gentoo 2.37_p1 p2) 2.37)
> > #130 SMP PREEMPT Thu Apr 28 10:50:24 CEST 2022
> > 
> > $ uname -mi
> > x86_64 GenuineIntel
> > 
> > 
> > I tried to compile 5.17.6 without the three mentioned diffs which
> > modify the following files:
> > 
> >     tools/objtool/check.c   and
> >     tools/objtool/elf.c      and
> >     tools/objtool/include/objtool/elf.h
> > 
> > and was then able to successfully boot 5.17.6.

5.17.6 has commit 60d2b0b1018a ("objtool: Fix code relocs vs weak
symbols"), which has a known issue that is fixed with commit
ead165fa1042 ("objtool: Fix symbol creation"). If you apply ead165fa1042
on 5.17.6 or newer, does that resolve your issue?

ead165fa1042 is tagged for stable but I don't think Greg picks up
patches from mainline until they are in a tagged -rc release.

Cheers,
Nathan