Backtrace

BUG: unable to handle page fault for address: ffffffffffffff00
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 4aa15067 P4D 4aa15067 PUD 4aa17067 PMD 0 
Oops: 0002 [#1] SMP PTI
CPU: 0 PID: 41417 Comm: umount Tainted: G        W         5.12.12-300.fc34.x86_64 #1
Hardware name: Dell Inc. Latitude 5480/0NDFXD, BIOS 1.5.3 08/07/2017
RIP: 0010:__destroy_inode+0xee/0x170
Code: 0d e7 52 cd 4d 5b c3 b8 ff ff ff ff f0 0f c1 07 83 f8 01 74 3e 85 c0 7f e4 be 03 00 00 00 e8 19 08 2c 00 eb d8 b8 ff ff ff ff <f0> 0f c1 07 83 f8 01 74 10 85 c0 7f b7 be 03 00 00 00 e8 fb 07 2c
RSP: 0018:ffffa6654039bdc8 EFLAGS: 00010246
RAX: 00000000ffffffff RBX: ffff8dcf5bedf980 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffffffffff00
RBP: ffffffffb304b440 R08: 0000000000000001 R09: ffffa6654039bca8
R10: ffff8dd1083a75a8 R11: 0000000000000000 R12: ffff8dd27d6d9d18
R13: ffff8dd27d6d9d18 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f0c3c7f0c40(0000) GS:ffff8dd35e800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff00 CR3: 0000000119c6e002 CR4: 00000000003706f0
Call Trace:
 destroy_inode+0x2a/0x70
 __dentry_kill+0xe1/0x180
 shrink_dentry_list+0x4e/0xc0
 shrink_dcache_parent+0xc1/0x100
 shrink_dcache_for_umount+0x37/0x110
 generic_shutdown_super+0x1a/0x100
 kill_block_super+0x21/0x50
 deactivate_locked_super+0x36/0xa0
 cleanup_mnt+0x12d/0x190
 task_work_run+0x65/0xa0
 exit_to_user_mode_prepare+0x218/0x220
 syscall_exit_to_user_mode+0x18/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0c3ca1f38b
Code: 2a 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 90 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 b9 2a 0c 00 f7 d8
RSP: 002b:00007ffed3b0cce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00005622bc59b690 RCX: 00007f0c3ca1f38b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00005622bc59d990
RBP: 00005622bc59b460 R08: 0000000000000000 R09: 00007f0c3cae2a60
R10: 00005622bc59d980 R11: 0000000000000246 R12: 0000000000000000
R13: 00005622bc59d990 R14: 00005622bc59b570 R15: 00005622bc59b460
Modules linked in: uinput rfcomm snd_seq_dummy snd_hrtimer bridge stp llc ccm ip_set nfnetlink cmac bnep sunrpc squashfs loop snd_soc_skl x86_pkg_temp_thermal intel_powerclamp coretemp snd_soc_hdac_hda snd_hda_codec_hdmi snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core ee1004 lis3lv02d_i2c kvm_intel iTCO_wdt lis3lv02d intel_pmc_bxt snd_compress snd_hda_codec_realtek snd_pcm_dmaengine iTCO_vendor_support snd_hda_codec_generic ac97_bus mei_hdcp mei_wdt snd_hda_intel kvm dell_rbtn snd_intel_dspcfg btusb snd_intel_sdw_acpi intel_rapl_msr snd_hda_codec snd_hda_core btrtl btbcm btintel dell_laptop ath10k_pci ledtrig_audio snd_hwdep ath10k_core dell_smm_hwmon mac80211 snd_seq bluetooth snd_seq_device ath snd_pcm cfg80211 irqbypass rapl intel_cstate intel_uncore snd_timer dell_wmi dell_smbios dcdbas snd intel_wmi_thunderbolt dell_wmi_descriptor wmi_bmof pcspkr i2c_i801 ecdh_generic soundcore libarc4 i2c_smbus rfkill ecc joydev
 processor_thermal_device mei_me processor_thermal_rfim processor_thermal_mbox processor_thermal_rapl mei intel_rapl_common idma64 intel_xhci_usb_role_switch intel_pch_thermal intel_soc_dts_iosf int3403_thermal int3400_thermal acpi_pad int340x_thermal_zone intel_hid dell_smo8800 acpi_thermal_rel sparse_keymap zram i915 rtsx_pci_sdmmc mmc_core hid_alps crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit drm_kms_helper e1000e ghash_clmulni_intel cec serio_raw drm rtsx_pci wmi i2c_hid_acpi i2c_hid video fuse [last unloaded: nf_defrag_ipv4]
CR2: ffffffffffffff00