1. Please describe the problem:
kernel-core 5.12.6-300.fc34 in dnf upgrade --refresh doesn't allow login after reboot

2. What is the Version-Release number of the kernel:
5.12.6-300.fc34

3. Did it work previously in Fedora? If so, what kernel version did the issue
   *first* appear?  Old kernels are available for download at
   https://koji.fedoraproject.org/koji/packageinfo?packageID=8 :

It works fine in kernel-core-5.11.18-300.fc34.x86_64 and it start appear in kernel-core-5.12.6-300.fc34


4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:

1) dnf upgrade --refresh
2) reboot
3) at login doesn't allow


5. Does this problem occur with the latest Rawhide kernel? To install the
   Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
   ``sudo dnf update --enablerepo=rawhide kernel``:

alternative solution(work around)
1) boot through previous working version (5.11.18.300 in this case)
2) dnf history undo <ID> --skip-unavailable
3) dnf upgrade --refresh --exclude=kernel-core
4)reboot
5) login works now


6. Are you running any modules that not shipped with directly Fedora's kernel?:

NO


7. Please attach the kernel logs. You can get the complete kernel log
   for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
   issue occurred on a previous boot, use the journalctl ``-b`` flag.