Backtrace

WARNING: CPU: 2 PID: 16771 at drivers/pci/probe.c:1096 pci_add_new_bus+0x41b/0x470
Modules linked in: cdc_ether usbnet rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun bridge stp llc ccm nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) cmac bnep sunrpc snd_hda_codec_hdmi ath10k_pci ath10k_core iTCO_wdt ee1004 mei_wdt intel_pmc_bxt mei_hdcp intel_rapl_msr iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic mac80211 uvcvideo x86_pkg_temp_thermal intel_powerclamp dell_rbtn coretemp dell_laptop ledtrig_audio videobuf2_vmalloc snd_hda_intel dell_smm_hwmon videobuf2_memops kvm_intel snd_intel_dspcfg ath
 snd_hda_codec videobuf2_v4l2 videobuf2_common snd_usb_audio btusb snd_hda_core btrtl snd_seq snd_usbmidi_lib kvm snd_hwdep snd_rawmidi snd_seq_device videodev cfg80211 btbcm snd_pcm btintel bluetooth irqbypass rapl intel_cstate snd_timer intel_uncore dell_wmi mc ecdh_generic snd dell_smbios ecc dcdbas rfkill i2c_i801 processor_thermal_device pcspkr intel_wmi_thunderbolt soundcore libarc4 wmi_bmof dell_wmi_descriptor mei_me i2c_smbus intel_rapl_common joydev mei idma64 intel_pch_thermal intel_soc_dts_iosf intel_hid int3400_thermal int3403_thermal acpi_pad sparse_keymap acpi_thermal_rel int340x_thermal_zone ip_tables dm_crypt nouveau i915 rtsx_pci_sdmmc mmc_core r8152 hid_alps mii crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel e1000e mxm_wmi ttm i2c_algo_bit serio_raw drm_kms_helper cec drm rtsx_pci i2c_hid wmi video fuse
CPU: 2 PID: 16771 Comm: kworker/u16:13 Tainted: G           OE     5.9.16-100.fc32.x86_64 #1
Hardware name: Dell Inc. Latitude 5480/0KJ49C, BIOS 1.9.3 03/08/2018
Workqueue: kacpi_hotplug acpi_hotplug_work_fn
RIP: 0010:pci_add_new_bus+0x41b/0x470
Code: 85 d2 74 3e 83 c0 02 48 98 0f b6 80 88 e7 0c 9c eb 0b 83 fa 01 19 c0 83 e0 03 83 c0 0c 41 88 84 24 e3 00 00 00 e9 46 fd ff ff <0f> 0b e9 2b fe ff ff b8 02 00 00 00 eb c8 b8 02 00 00 00 e9 01 fd
RSP: 0018:ffffa921c40f7c08 EFLAGS: 00010282
RAX: 00000000ffffffef RBX: ffff9b17d9bd1000 RCX: 0000000000027492
RDX: 0000000000027491 RSI: d81547e283ed4a32 RDI: ffff9b198a802158
RBP: ffff9b198a805800 R08: ffff9b19d5fdf0c8 R09: 0000000000000000
R10: 0000000000000001 R11: ffff9b180e8acd00 R12: ffff9b198a802000
R13: 0000000000000000 R14: ffff9b198a802120 R15: ffff9b17d9bd1000
FS:  0000000000000000(0000) GS:ffff9b1a1e880000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ae8d7b31d8 CR3: 000000049aa0e004 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 pci_scan_bridge_extend+0x5e3/0x620
 pci_scan_child_bus_extend+0xcc/0x2a0
 pci_scan_bridge_extend+0x578/0x620
 enable_slot+0x1b3/0x430
 acpiphp_check_bridge.part.0+0x117/0x140
 acpiphp_hotplug_notify+0x170/0x280
 ? acpiphp_post_dock_fixup+0xc0/0xc0
 acpi_device_hotplug+0x8e/0x390
 acpi_hotplug_work_fn+0x3d/0x50
 process_one_work+0x1b4/0x370
 worker_thread+0x53/0x3e0
 ? process_one_work+0x370/0x370
 kthread+0x11b/0x140
 ? __kthread_bind_mask+0x60/0x60
 ret_from_fork+0x22/0x30