Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000088
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP NOPTI
CPU: 6 PID: 184097 Comm: kworker/u16:8 Tainted: G        W  OE     5.11.14-200.fc33.x86_64 #1
Hardware name: HP HP ProBook 450 G6/8538, BIOS R71 Ver. 01.08.03 07/17/2019
Workqueue: writeback wb_workfn (flush-btrfs-1)
RIP: 0010:__mod_lruvec_page_state+0x64/0xb0
Code: 5c 48 8b 00 48 c1 e8 36 48 8b 3c c5 a0 4b d5 ae 48 83 e2 fc 74 31 0f 1f 44 00 00 48 63 87 c0 a0 02 00 4c 8b 8c c2 00 0b 00 00 <49> 3b b9 88 00 00 00 75 38 44 89 c2 4c 89 cf e9 48 ff ff ff 4c 8d
RSP: 0018:ffffc1c18c7efa78 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff9c50aae46760 RCX: 000fffffc0000017
RDX: ffff9c4d521ff020 RSI: 0000000000000014 RDI: ffff9c53b77d5000
RBP: ffffed6140f1d800 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000011a47000 R11: 0000000000007000 R12: 0000000000000000
R13: ffff9c4c80055c00 R14: 0000000000000000 R15: 0000000000000247
FS:  0000000000000000(0000) GS:ffff9c5397580000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000088 CR3: 0000000450a10002 CR4: 00000000003706e0
Call Trace:
 clear_page_dirty_for_io+0x148/0x1d0
 extent_write_cache_pages.constprop.0+0x237/0x3e0
 extent_writepages+0x33/0x90
 do_writepages+0x28/0xa0
 ? wb_calc_thresh+0x41/0x50
 __writeback_single_inode+0x39/0x2a0
 writeback_sb_inodes+0x1d8/0x440
 __writeback_inodes_wb+0x4c/0xe0
 wb_writeback+0x1c8/0x270
 wb_workfn+0x357/0x4b0
 ? check_preempt_curr+0x2f/0x70
 ? ttwu_do_wakeup+0x17/0x130
 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+0x1f/0x30
Modules linked in: mptcp_diag tcp_diag udp_diag raw_diag inet_diag unix_diag uinput rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun bridge stp llc ccm nft_objref wireguard libchacha20poly1305 nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 chacha_x86_64 nft_fib_ipv6 nft_fib poly1305_x86_64 libblake2s nft_reject_inet blake2s_x86_64 nf_reject_ipv4 nf_reject_ipv6 ip6_udp_tunnel nft_reject udp_tunnel curve25519_x86_64 nft_ct libcurve25519_generic libchacha libblake2s_generic 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) cmac bnep vboxdrv(OE) sunrpc snd_hda_codec_hdmi snd_sof_pci snd_sof_intel_hda_common snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_hda_codec_realtek
 snd_sof snd_hda_codec_generic snd_sof_xtensa_dsp ledtrig_audio snd_soc_skl snd_soc_hdac_hda iTCO_wdt snd_hda_ext_core intel_pmc_bxt mei_hdcp ee1004 iTCO_vendor_support snd_soc_sst_ipc snd_soc_sst_dsp x86_pkg_temp_thermal intel_powerclamp squashfs snd_soc_acpi_intel_match coretemp snd_soc_acpi snd_hda_intel intel_rapl_msr kvm_intel snd_intel_dspcfg soundwire_intel vfat soundwire_generic_allocation fat kvm snd_soc_core irqbypass rapl snd_compress intel_cstate snd_pcm_dmaengine loop iwlmvm snd_usb_audio intel_uncore soundwire_cadence snd_hda_codec mac80211 snd_usbmidi_lib snd_hda_core snd_rawmidi hp_wmi ac97_bus sparse_keymap snd_hwdep wmi_bmof pcspkr snd_seq snd_seq_device btusb cdc_ether btrtl uvcvideo libarc4 usbnet videobuf2_vmalloc i2c_i801 btbcm snd_pcm mei_me videobuf2_memops btintel i2c_smbus r8152 videobuf2_v4l2 videobuf2_common mii mei snd_timer bluetooth iwlwifi joydev snd videodev soundcore cfg80211 mc ecdh_generic processor_thermal_device processor_thermal_rfim
 processor_thermal_mbox ecc processor_thermal_rapl rfkill idma64 intel_rapl_common intel_pch_thermal intel_soc_dts_iosf ucsi_acpi typec_ucsi typec hp_accel int3403_thermal lis3lv02d acpi_pad int340x_thermal_zone int3400_thermal hp_wireless acpi_thermal_rel zram ip_tables hid_logitech_hidpp hid_logitech_dj hid_microsoft ff_memless i915 nouveau mxm_wmi drm_ttm_helper hid_multitouch ttm i2c_algo_bit drm_kms_helper cec crct10dif_pclmul drm crc32_pclmul crc32c_intel nvme sdhci_pci cqhci r8169 ghash_clmulni_intel sdhci serio_raw nvme_core mmc_core wmi i2c_hid video pinctrl_cannonlake fuse
CR2: 0000000000000088