This may indeed be related to bug #1208404. From the messages in the attached y2logs tarball: 2023-02-16T22:03:05.942935+00:00 install kernel: [ 153.695375][T12874] grub2-probe[12874]: segfault at 1 ip 00007feb5edcd738 sp 00007ffcfc2561d8 error 4 in libc-2.31.so[7feb5ec50000+1e6000] 2023-02-16T22:03:05.950121+00:00 install kernel: [ 153.695393][T12874] Code: 0c 8a 8b 04 82 29 c8 c3 66 2e 0f 1f 84 00 00 00 00 00 89 f9 c5 f9 6e c6 c4 41 31 ef c9 c4 e2 7d 78 c0 83 e1 3f 83 f9 20 77 38 <c5> 7e 6f 07 c4 c1 7d 74 c8 c4 c1 35 74 d0 c5 ed eb c9 c5 fd d7 c1 2023-02-16T22:03:06.155340+00:00 install kernel: [ 153.908941][T12963] grub2-probe[12963]: segfault at 1 ip 00007f707aa8a738 sp 00007fff8f866758 error 4 in libc-2.31.so[7f707a90d000+1e6000] 2023-02-16T22:03:06.155348+00:00 install kernel: [ 153.908950][T12963] Code: 0c 8a 8b 04 82 29 c8 c3 66 2e 0f 1f 84 00 00 00 00 00 89 f9 c5 f9 6e c6 c4 41 31 ef c9 c4 e2 7d 78 c0 83 e1 3f 83 f9 20 77 38 <c5> 7e 6f 07 c4 c1 7d 74 c8 c4 c1 35 74 d0 c5 ed eb c9 c5 fd d7 c1