On Thu, 2017-03-09 at 18:50 +0100, Thomas Gleixner wrote:
> On Thu, 9 Mar 2017, Mike Galbraith wrote:
> 
> > Greetings,
> > 
> > I bisected kdump breakage to $subject, and verified the identified
> > culprit via revert.  Seems kexec needs those variables as they were.
> 
> Yuck. That does not make any sense at all. I'll try to figure out why.

Dunno, but I did find this.

git@homer:..kexec-tools/kexec-tools-2.0.5> grep -IR 'elf_rel_.*symbol' . | 
egrep 'backup_|digest'|grep x86_64
./kexec/arch/x86_64/kexec-x86_64.c:     elf_rel_set_symbol(&info->rhdr, 
"backup_src_start",
./kexec/arch/x86_64/kexec-x86_64.c:     elf_rel_set_symbol(&info->rhdr, 
"backup_src_size",
./kexec/arch/x86_64/kexec-x86_64.c:             elf_rel_set_symbol(&info->rhdr, 
"backup_start",

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