kexec + hibernation doesn't work

[r-ricci]

I'm trying to find the cause of this bug: zbm-dev/zfsbootmenu#702.
I've reported it here, but others didn't have luck reproducing it.
So I'm asking here if someone else is able to reproduce or if I'm just hallucinating. I also think some kernel config used by Void is playing a role, but I don't know which one.

First, comment out kernel.kexec_load_disabled=1 in /usr/lib/sysctl.d/10-void-user.conf and reboot (uncomment it again when done testing).
Then do something like this:

# kexec -l /boot/vmlinuz-6.12.11_1 --initrd=/boot/initramfs-6.12.11_1.img --reuse-cmdline
# reboot  #this calls kexec -e
# printf reboot >/sys/power/disk
# printf disk >/sys/power/state

A kernel oops should occur when the system resumes.

If possible, you should try this on a system without ZFS, so the kernel doesn't get tainted.

Please, let me know your suggestions.