[REGRESSION] Kernel booted via kexec fails to resume from hibernation

[Roberto Ricci]

On 2025-01-13 Mon 22:28:48 +0100, Roberto Ricci wrote:
> I can reproduce this with kernel 6.13-rc7 in a qemu x86_64 virtual machine
> running Void Linux, with the following commands:
> 
> ```
> # kexec -l /boot/vmlinuz-6.13.0-rc7 --initrd=/boot/initramfs-6.13.0-rc7 --reuse-cmdline
> # reboot
> # printf reboot >/sys/power/disk
> # printf disk >/sys/power/state
> ```

Looks like it's the kernel performing the kexec which causes the issue,
not the target one. E.g.: kexec-ing 6.7 from 6.13-rc7 makes resume from
hibernation fail; but if I kexec 6.13-rc7 from 6.7, then it works fine.