Comment # 4 on bug 1161232 from Jiri Slaby

> general protection fault: 0000 [#1] SMP PTI
> CPU: 1 PID: 16179 Comm: kworker/u16:3 Kdump: loaded Not tainted 5.4.10-1-default #1 openSUSE Tumbleweed (unreleased)
> Hardware name: Dell Inc. XPS 13 9370/0F6P3V, BIOS 1.12.1 12/11/2019
> Workqueue: kacpi_hotplug acpi_hotplug_work_fn
> RIP: 0010:remove_files.isra.0+0x1f/0x70
> Code: 41 bc fe ff ff ff eb ef 0f 1f 00 0f 1f 44 00 00 41 54 49 89 d4 55 48 89 fd 53 48 85 f6 74 24 48 8b 06 48 89 f3 48 85 c0 74 19 <48> 8b 30 31 d2 48 89 ef 48 83 c3 08 e8 70 d6 ff ff 48 8b 03 48 85
> RSP: 0018:ffffbb9808ce3b78 EFLAGS: 00010206
> RAX: 79221371e1231feb RBX: ffff9c9646ef1ac0 RCX: 0000000000000000
> RDX: ffff9c964e131480 RSI: ffff9c9646ef1ac0 RDI: ffff9c963a721908
> RBP: ffff9c963a721908 R08: 0000000000000000 R09: ffffffffb0568700
> usb 3-2: USB disconnect, device number 3
> R10: ffff9c963a721990 R11: ffff9c92c7c540d8 R12: ffff9c964e131480
> R13: ffff9c963a7a88c0 R14: ffff9c966d11e0b0 R15: ffff9c92c7282750
> FS:  0000000000000000(0000) GS:ffff9c966d440000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000000000000000 CR3: 000000048eeee006 CR4: 00000000003606e0
> Call Trace:
>  sysfs_remove_group+0x3d/0x80
>  sysfs_remove_groups+0x29/0x40
>  device_remove_attrs+0x39/0x70
>  device_del+0x15a/0x370
>  cdev_device_del+0x15/0x30
>  posix_clock_unregister+0x21/0x50
>  ptp_clock_unregister+0x6e/0x80
>  igb_ptp_stop+0x21/0x50 [igb]
>  igb_remove+0x47/0x130 [igb]
>  pci_device_remove+0x3b/0xa0
>  device_release_driver_internal+0xe4/0x1c0
>  pci_stop_bus_device+0x68/0x90
>  pci_stop_bus_device+0x2c/0x90
>  pci_stop_bus_device+0x3d/0x90
>  pci_stop_bus_device+0x2c/0x90
>  pci_stop_bus_device+0x2c/0x90
>  pci_stop_and_remove_bus_device+0xe/0x20
>  disable_slot+0x49/0x90
>  acpiphp_check_bridge.part.0+0xba/0x140
>  acpiphp_hotplug_notify+0xe2/0x1e0
>  ? free_bridge+0x110/0x110
>  acpi_device_hotplug+0x9e/0x3f0
>  acpi_hotplug_work_fn+0x1a/0x30
>  process_one_work+0x1f0/0x3a0
>  worker_thread+0x4d/0x400
>  kthread+0xf9/0x130
>  ? process_one_work+0x3a0/0x3a0
>  ? kthread_park+0x90/0x90
>  ret_from_fork+0x3a/0x50
> Modules linked in: fuse rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc fscache af_packet xt_set xt_tcpudp typec_displayport xt_pkttype ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 ip6t_rpfilter nf_log_ipv4 nf_log_common ipt_REJECT nf_reject_ipv4 xt_LOG xt_conntrack ip_set_hash_ip ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ebtable_filter ebtables scsi_transport_iscsi ip6table_filter ip6_tables iptable_filter ip_tables x_tables bpfilter rfcomm cmac snd_seq_midi snd_seq_midi_event snd_seq algif_hash bnep iTCO_wdt iTCO_vendor_support hid_multitouch mei_hdcp mei_wdt intel_rapl_msr snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match dell_laptop snd_hda_codec_hdmi snd_soc_acpi x86_pkg_temp_thermal intel_powerclamp snd_soc_core kvm_intel
>  snd_hda_codec_realtek
> done.
> usb 6-4: USB disconnect, device number 2
>  snd_hda_codec_generic snd_compress ledtrig_audio snd_pcm_dmaengine kvm dmi_sysfs dell_wmi snd_hda_intel ath10k_pci dell_smbios snd_intel_nhlt coretemp msr dcdbas ath10k_core irqbypass snd_usb_audio snd_hda_codec snd_usbmidi_lib ath pcspkr snd_hda_core snd_rawmidi snd_hwdep i2c_i801 wmi_bmof dell_wmi_descriptor intel_wmi_thunderbolt mac80211 igb snd_seq_device mc snd_pcm dca joydev btusb btrtl snd_timer btbcm btintel snd cfg80211 soundcore bluetooth thunderbolt libarc4 ucsi_acpi ecdh_generic typec_ucsi mei_me processor_thermal_device rfkill rtsx_pci_ms intel_lpss_pci intel_xhci_usb_role_switch intel_lpss intel_rapl_common memstick ecc mei roles idma64 intel_soc_dts_iosf intel_pch_thermal typec thermal int3403_thermal int340x_thermal_zone intel_hid sparse_keymap ac acpi_pad int3400_thermal acpi_thermal_rel button nls_iso8859_1 nls_cp437 vfat fat dm_crypt algif_skcipher af_alg hid_generic usbhid uas usb_storage i915 crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel
>  rtsx_pci_sdmmc
> usb 7-1: USB disconnect, device number 2
>  mmc_core i2c_algo_bit drm_kms_helper aesni_intel syscopyarea sysfillrect sysimgblt fb_sys_fops xhci_pci xhci_hcd glue_helper crypto_simd drm cryptd usbcore serio_raw rtsx_pci wmi i2c_hid battery pinctrl_sunrisepoint video pinctrl_intel sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua loop efivarfs