I get kernel-6.17.5-200.fc42.x86_64 boot failure with nvidia. All screen goes black basically, but this I managed to find in journalctl -t kernel output:
Nov 02 13:41:00 fedora kernel: rfkill: input handler enabled
Nov 02 13:41:03 fedora kernel: [drm:drm_new_set_master] *ERROR* [nvidia-drm] [GPU ID 0x00000200] Failed to grab modeset ownership
Nov 02 13:41:11 fedora kernel: audit: type=1305 audit(1762083671.609:822): op=set audit_pid=0 old=17314 auid=4294967295 ses=4294967295 subj>
Nov 02 13:41:11 fedora kernel: audit: type=1131 audit(1762083671.612:823): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_>
Nov 02 13:41:11 fedora kernel: audit: type=1131 audit(1762083671.612:824): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_>
Nov 02 13:41:11 fedora kernel: audit: type=1131 audit(1762083671.618:825): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_>
Nov 02 13:41:11 fedora kernel: audit: type=1131 audit(1762083671.618:826): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_>
Nov 02 13:41:11 fedora kernel: audit: type=1131 audit(1762083671.618:827): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_>
Nov 02 13:41:11 fedora kernel: audit: type=1131 audit(1762083671.618:828): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_>
Nov 02 13:41:11 fedora kernel: zram0: detected capacity change from 7989248 to 0
Nov 02 13:41:11 fedora kernel: audit: type=1131 audit(1762083671.710:829): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_>
Nov 02 13:41:11 fedora kernel: audit: type=1131 audit(1762083671.942:830): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_>
Nov 02 13:41:11 fedora kernel: audit: type=1130 audit(1762083671.944:831): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_
I hope this output is useful if not I can get more what is asked and reproduce easily just by hitting reboot button. Any suggestions welcome. I got something bad with 6.17.4 too if not exactly same. So temporary solution is to stick with 6.16*.