Backtrace

WARNING: CPU: 0 PID: 196119 at drivers/pci/probe.c:1109 pci_add_new_bus+0x44a/0x4a0
Modules linked in: xt_multiport xt_nat xt_addrtype xt_mark xt_MASQUERADE xt_comment veth overlay hid_logitech_hidpp snd_usb_audio snd_usbmidi_lib hid_logitech_dj snd_rawmidi r8153_ecm cdc_ether usbnet r8152 mii thunderbolt nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat iptable_mangle iptable_raw iptable_security ip6table_filter ip6_tables iptable_filter ip_tables uinput bnep snd_seq_dummy snd_hrtimer nf_conntrack_tftp bridge stp llc ccm nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables nfnetlink bluetooth ecdh_generic ecc sunrpc vfat fat snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match ath10k_pci snd_soc_acpi snd_hda_codec_hdmi ath10k_core snd_soc_core x86_pkg_temp_thermal intel_powerclamp coretemp snd_compress snd_hda_codec_realtek snd_hda_codec_generic
 kvm_intel snd_pcm_dmaengine ac97_bus snd_hda_intel mac80211 snd_intel_dspcfg mei_hdcp mei_wdt snd_intel_sdw_acpi iTCO_wdt intel_pmc_bxt iTCO_vendor_support snd_hda_codec intel_rapl_msr uvcvideo dell_laptop ledtrig_audio dell_smm_hwmon kvm snd_hda_core snd_hwdep snd_seq videobuf2_vmalloc irqbypass snd_seq_device videobuf2_memops snd_pcm rapl intel_cstate videobuf2_v4l2 videobuf2_common dell_wmi dell_smbios videodev ath intel_uncore dcdbas snd_timer intel_wmi_thunderbolt cfg80211 pcspkr dell_wmi_descriptor mei_me wmi_bmof snd mc i2c_i801 mei i2c_smbus processor_thermal_device ucsi_acpi soundcore joydev rfkill processor_thermal_rfim typec_ucsi processor_thermal_mbox libarc4 idma64 processor_thermal_rapl typec intel_rapl_common intel_xhci_usb_role_switch intel_pch_thermal intel_soc_dts_iosf intel_vbtn soc_button_array int3403_thermal acpi_pad intel_hid int340x_thermal_zone sparse_keymap int3400_thermal acpi_thermal_rel zram i915 i2c_algo_bit drm_kms_helper cec hid_multitouch
 drm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel nvme serio_raw nvme_core wmi i2c_hid_acpi i2c_hid video pinctrl_sunrisepoint fuse [last unloaded: ip_tables]
CPU: 0 PID: 196119 Comm: kworker/u8:13 Tainted: G     U            5.12.8-300.fc34.x86_64 #1
Hardware name: Dell Inc. XPS 13 9360/0VPVXX, BIOS 2.14.2 07/13/2020
Workqueue: kacpi_hotplug acpi_hotplug_work_fn
RIP: 0010:pci_add_new_bus+0x44a/0x4a0
Code: 85 d2 74 3e 83 c0 02 48 98 0f b6 80 30 13 0d b0 eb 0b 83 fa 01 19 c0 83 e0 03 83 c0 0c 41 88 84 24 e3 00 00 00 e9 34 fd ff ff <0f> 0b e9 1f fe ff ff b8 02 00 00 00 eb c8 b8 02 00 00 00 e9 ed fc
RSP: 0018:ffffb311c576bc00 EFLAGS: 00010282
RAX: 00000000ffffffef RBX: ffff96b654f7c000 RCX: 0000000000043198
RDX: 0000000000043197 RSI: 7022536eb7eee5bf RDI: ffff96b7fcc96158
RBP: ffff96b5cec25000 R08: ffff96b6c387cae8 R09: 000000000001408e
R10: 0000000000000002 R11: ffff96b6f9c796d0 R12: ffff96b7fcc96000
R13: 0000000000000000 R14: ffff96b7fcc96120 R15: ffff96b654f7c000
FS:  0000000000000000(0000) GS:ffff96b8ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002f6a09338000 CR3: 0000000232aae005 CR4: 00000000003706f0
Call Trace:
 pci_scan_bridge_extend+0x5db/0x620
 pci_scan_child_bus_extend+0xcc/0x2a0
 pci_scan_bridge_extend+0x56d/0x620
 enable_slot+0x1ae/0x420
 acpiphp_check_bridge.part.0+0x117/0x140
 acpiphp_hotplug_notify+0x16c/0x280
 ? acpiphp_post_dock_fixup+0xc0/0xc0
 acpi_device_hotplug+0x94/0x3b0
 acpi_hotplug_work_fn+0x3d/0x50
 process_one_work+0x1ec/0x380
 worker_thread+0x53/0x3e0
 ? process_one_work+0x380/0x380
 kthread+0x11b/0x140
 ? kthread_associate_blkcg+0xa0/0xa0
 ret_from_fork+0x22/0x30