The only kernel that I can use at the moment is 5.11.10. Both 5.11.11 and 5.11.12 lock-up with the stack trace I have pasted below.
I am running Fedora 32 on a Lenovo P620 with Quadro 4000 and VBIOS version of 90.04.87.00.01.
[ 52.419069] watchdog: BUG: soft lockup - CPU#25 stuck for 22s! [plymouthd:598]
[ 52.419074] Modules linked in: ip6table_raw nf_log_ipv6 ip6t_REJECT nf_reject_ipv6 ip6table_filter ip6table_mangle ip6_tables vboxnetadp(O) vboxnetflt(O) vboxdrv(O) iptable_raw nf_log_ipv4 nf_log_common ipt_REJECT nf_reject_ipv4 xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 cmac nf_defrag_ipv4 bnep xt_LOG xt_tcpmss iptable_filter iptable_mangle sunrpc vfat fat nvidia_drm(PO) nvidia_modeset(PO) nvidia_uvm(PO) intel_rapl_msr ucsi_ccg typec_ucsi intel_rapl_common amd64_edac_mod nvidia(PO) typec edac_mce_amd amd_energy snd_hda_codec_hdmi iwlmvm snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation kvm_amd snd_soc_core mac80211 kvm snd_compress snd_pcm_dmaengine soundwire_cadence snd_hda_codec snd_usb_audio snd_hda_core snd_usbmidi_lib btusb ac97_bus snd_rawmidi irqbypass snd_hwdep rapl wmi_bmof pcspkr btrtl libarc4 snd_seq btbcm snd_seq_device btintel snd_pcm drm_kms_helper bluetooth iwlwifi snd_timer snd soundcore cec i2c_nvidia_gpu ecdh_generic mc cfg80211 joydev
[ 52.419113] ecc sp5100_tco k10temp i2c_piix4 rfkill acpi_cpufreq drm ip_tables xfs dm_crypt hid_logitech_hidpp hid_logitech_dj crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel nvme nvme_core atlantic ccp uas usb_storage macsec wmi pinctrl_amd fuse
[ 52.419124] CPU: 25 PID: 598 Comm: plymouthd Tainted: P O 5.11.12-100.fc32.x86_64 #1
[ 52.419126] Hardware name: LENOVO 30E1S0FG00/1046, BIOS S07KT0EA 11/13/2020
[ 52.419127] RIP: 0010:_nv001527kms+0x0/0x70 [nvidia_modeset]
[ 52.419155] Code: 49 89 47 48 48 8b 53 28 e9 16 fe ff ff 49 c7 47 48 00 00 00 00 48 8b 53 28 e9 d4 fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 66 90 <41> 54 55 49 89 fc 53 48 8d 5f 38 48 89 f5 48 89 df e8 fa 4a 00 00
[ 52.419156] RSP: 0018:ffffa61280e23620 EFLAGS: 00000282
[ 52.419157] RAX: ffffffffc116d870 RBX: ffff93d91974ee08 RCX: 0000000000000da8
[ 52.419158] RDX: ffff93d8c0fe8488 RSI: ffff93d8d0314008 RDI: ffff93d91974ee08
[ 52.419159] RBP: ffff93d9299b9008 R08: ffffa61280e23528 R09: 0000000000000001
[ 52.419160] R10: 0000000000014834 R11: 0000000000000000 R12: 0000000000000000
[ 52.419160] R13: 0000000000000000 R14: ffff93d8d0314008 R15: 0000000000000001
[ 52.419161] FS: 00007ff5742d9f40(0000) GS:ffff93e7bd840000(0000) knlGS:0000000000000000
[ 52.419162] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 52.419163] CR2: 00007f84b400a3b8 CR3: 000000012725e000 CR4: 0000000000350ee0
[ 52.419164] Call Trace:
[ 52.419166] ? _nv001103kms+0xb2/0x400 [nvidia_modeset]
[ 52.419189] ? _nv000765kms+0x1e/0x80 [nvidia_modeset]
[ 52.419208] ? _nv002347kms+0x112/0x130 [nvidia_modeset]
[ 52.419225] ? _nv000538kms+0xd7/0xf0 [nvidia_modeset]
[ 52.419242] ? _nv000020kms+0x6e7/0x850 [nvidia_modeset]
[ 52.419258] ? _nv035449rm+0xc/0x20 [nvidia]
[ 52.419519] ? _nv009667rm+0x40/0x90 [nvidia]
[ 52.419767] ? kfree+0xb3/0x400
[ 52.419770] ? _nv009665rm+0xbe/0x100 [nvidia]
[ 52.420017] ? _nv038024rm+0x120/0x130 [nvidia]
[ 52.420265] ? _nv038022rm+0xa9/0x2d0 [nvidia]
[ 52.420518] ? _nv032903rm+0x1e/0x30 [nvidia]
[ 52.420751] ? os_acquire_spinlock+0xe/0x20 [nvidia]
[ 52.420942] ? _nv035424rm+0xc/0x20 [nvidia]
[ 52.421197] ? _nv040195rm+0x9b/0x190 [nvidia]
[ 52.421384] ? _nv002732kms+0x12b0/0x15f0 [nvidia_modeset]
[ 52.421403] ? _nv000556kms+0x50/0x50 [nvidia_modeset]
[ 52.421417] ? nvKmsIoctl+0x96/0x1d0 [nvidia_modeset]
[ 52.421432] ? nvkms_ioctl_from_kapi+0x40/0x80 [nvidia_modeset]
[ 52.421446] ? _nv000018kms+0x46c/0x550 [nvidia_modeset]
[ 52.421466] ? drm_atomic_add_encoder_bridges+0x33/0x80 [drm]
[ 52.421484] ? nv_drm_atomic_apply_modeset_config.isra.0+0x2b2/0x3c0 [nvidia_drm]
[ 52.421487] ? nv_drm_atomic_commit+0xaa/0x340 [nvidia_drm]
[ 52.421489] ? drm_connector_list_iter_next+0x81/0xb0 [drm]
[ 52.421506] ? nv_drm_atomic_helper_disable_all+0x1b8/0x280 [nvidia_drm]
[ 52.421508] ? nv_drm_master_drop+0x22/0x60 [nvidia_drm]
[ 52.421510] ? drm_dropmaster_ioctl+0xaf/0x110 [drm]
[ 52.421523] ? drm_setmaster_ioctl+0x160/0x160 [drm]
[ 52.421537] ? drm_ioctl_kernel+0x86/0xd0 [drm]
[ 52.421551] ? drm_ioctl+0x20f/0x3a0 [drm]
[ 52.421564] ? drm_setmaster_ioctl+0x160/0x160 [drm]
[ 52.421577] ? selinux_file_ioctl+0x122/0x1c0
[ 52.421580] ? lapic_next_event+0x1d/0x20
[ 52.421582] ? clockevents_program_event+0x3b/0xf0
[ 52.421585] ? __x64_sys_ioctl+0x83/0xb0
[ 52.421587] ? do_syscall_64+0x33/0x40
[ 52.421589] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9