Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000028
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP PTI
CPU: 0 PID: 36785 Comm: kworker/u16:58 Tainted: P        W  OE     5.12.5-200.fc33.x86_64 #1
Hardware name: Dell Inc. XPS 15 9560/05FFDN, BIOS 1.4.0 08/23/2017
Workqueue: kacpi_hotplug acpi_hotplug_work_fn
RIP: 0010:pcie_aspm_init_link_state+0x1a/0xd90
Code: 78 e7 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1f 44 00 00 41 57 41 56 41 55 41 54 55 53 48 89 fb 48 83 ec 70 48 8b 57 18 <48> 8b 6a 28 48 8d 42 28 48 39 c5 75 44 eb 6b 8b 0d f1 aa 03 02 85
RSP: 0018:ffffb0b7c675bbe8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff96c5cc497000 RCX: 000000000000001e
RDX: 0000000000000000 RSI: ffff96c4d25e8000 RDI: ffff96c5cc497000
RBP: 0000000000000000 R08: 0000000000000002 R09: 0000000000000002
R10: 0000000000000007 R11: 0000000000000006 R12: 0000000000000000
R13: ffff96c4992fe800 R14: 0000000000000000 R15: 000000000000003e
FS:  0000000000000000(0000) GS:ffff96c7fe400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000028 CR3: 0000000477a10001 CR4: 00000000003706f0
Call Trace:
 ? kernfs_name_hash+0x12/0x80
 ? kernfs_find_ns+0x35/0xd0
 ? __cond_resched+0x16/0x40
 ? pci_dev_get+0x1b/0x30
 pci_scan_slot+0xde/0x110
 pci_scan_child_bus_extend+0x3a/0x2a0
 pci_scan_bridge_extend+0x573/0x620
 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+0x94/0x390
 acpi_hotplug_work_fn+0x3d/0x50
 process_one_work+0x1ec/0x380
 worker_thread+0x53/0x3e0
 ? process_one_work+0x380/0x380
 kthread+0x11b/0x140
 ? __kthread_bind_mask+0x60/0x60
 ret_from_fork+0x22/0x30
Modules linked in: r8153_ecm cdc_ether usbnet r8152 mii rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp 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 vboxnetadp(OE) nf_nat vboxnetflt(OE) nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 vboxdrv(OE) iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink cmac bnep btusb btrtl btbcm btintel uvcvideo bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc ecdh_generic ecc ip6table_filter ip6_tables iptable_filter tun sunrpc snd_hda_codec_hdmi ath10k_pci nvidia_drm(POE) nvidia_modeset(POE) ath10k_core x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp nvidia_uvm(POE) snd_hda_codec_generic mac80211
 snd_hda_intel mei_wdt kvm_intel snd_intel_dspcfg iTCO_wdt snd_intel_sdw_acpi mei_hdcp ee1004 intel_rapl_msr intel_pmc_bxt ath iTCO_vendor_support snd_hda_codec snd_hda_core snd_hwdep kvm snd_seq dell_laptop snd_seq_device ledtrig_audio dell_smm_hwmon cfg80211 snd_pcm irqbypass dell_wmi dell_smbios rapl dcdbas intel_cstate intel_uncore snd_timer processor_thermal_device snd i2c_i801 rfkill dell_wmi_descriptor nvidia(POE) wmi_bmof intel_wmi_thunderbolt soundcore libarc4 i2c_smbus joydev pcspkr processor_thermal_rfim mei_me processor_thermal_mbox mei idma64 processor_thermal_rapl intel_rapl_common intel_soc_dts_iosf intel_pch_thermal acpi_pad intel_hid int3400_thermal int3403_thermal int340x_thermal_zone acpi_thermal_rel sparse_keymap binfmt_misc zram ip_tables dm_crypt trusted hid_logitech_hidpp i915 hid_multitouch rtsx_pci_sdmmc mmc_core mxm_wmi crct10dif_pclmul crc32_pclmul i2c_algo_bit crc32c_intel drm_kms_helper ghash_clmulni_intel cec nvme serio_raw drm nvme_core
 rtsx_pci hid_logitech_dj i2c_hid_acpi i2c_hid wmi video fuse
CR2: 0000000000000028