Backtrace

BUG: unable to handle page fault for address: ffff8f7b3100fdac
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 21a01067 P4D 21a01067 PUD 0 
Oops: 0000 [#1] SMP PTI
CPU: 1 PID: 5876 Comm: plymouthd Not tainted 5.12.5-300.fc34.x86_64 #1
Hardware name: Dell Inc. Latitude E7440/0PPXP5, BIOS A25 02/01/2018
RIP: 0010:kobj_lookup+0x115/0x160
Code: e8 20 bd 99 ff 48 8b 44 24 10 48 85 c0 75 3e 49 8b bc 24 f8 07 00 00 e8 49 97 40 00 48 8b 44 24 18 49 8b 2c c4 48 85 ed 74 14 <8b> 45 08 39 d8 0f 86 33 ff ff ff 48 8b 6d 00 48 85 ed 75 ec 49 8b
RSP: 0018:ffffb6f3c11a7c60 EFLAGS: 00010282
RAX: 00000000ef309f2b RBX: 000000000040003f RCX: 0000000000000004
RDX: ffff8f7645f00000 RSI: 000000000040003f RDI: ffffffffa3bef800
RBP: ffff8f7b3100fda4 R08: 0000000000000000 R09: ffff8f76413659c0
R10: ffffb6f3c11a7d00 R11: 0000003336797474 R12: ffff8f764004c000
R13: ffff8f76413659c0 R14: ffffb6f3c11a7cc4 R15: ffffb6f3c11a7ef4
FS:  00007f81fba64800(0000) GS:ffff8f7756a80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8f7b3100fdac CR3: 0000000166130001 CR4: 00000000001706e0
Call Trace:
 chrdev_open+0x137/0x220
 ? cdev_device_add+0x90/0x90
 do_dentry_open+0x14b/0x360
 path_openat+0xa59/0xfc0
 ? __cond_resched+0x16/0x40
 ? mutex_lock+0xe/0x30
 do_filp_open+0x8f/0x120
 ? __check_object_size+0x136/0x150
 do_sys_openat2+0x7a/0x130
 __x64_sys_openat+0x45/0x70
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f81fbddd03b
Code: 25 00 00 41 00 3d 00 00 41 00 74 4b 64 8b 04 25 18 00 00 00 85 c0 75 67 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 91 00 00 00 48 8b 54 24 28 64 48 2b 14 25
RSP: 002b:00007ffdadf3fe30 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00005574fa5f8af0 RCX: 00007f81fbddd03b
RDX: 0000000000000902 RSI: 00005574fa5f9a20 RDI: 00000000ffffff9c
RBP: 00005574fa5f9a20 R08: 00005574fa5fae10 R09: 00007f81fbeafa60
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000902
R13: 0000000000000000 R14: 0000000000000000 R15: 00007f81fbed6e20
Modules linked in: uinput 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 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 cmac bnep sunrpc intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_codec_hdmi pn544_mei snd_hda_intel mei_phy snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec iwlmvm pn544 kvm_intel mac80211 hci uvcvideo kvm snd_hda_core nfc snd_hwdep videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common ppdev videodev snd_seq dell_laptop mc ledtrig_audio
 btusb btrtl btbcm btintel bluetooth irqbypass snd_seq_device snd_pcm rapl libarc4 dell_smm_hwmon intel_cstate intel_uncore ecdh_generic mei_hdcp ecc snd_timer dell_wmi iTCO_wdt intel_pmc_bxt mei_wdt sparse_keymap iTCO_vendor_support pcspkr dell_smbios iwlwifi dcdbas snd cfg80211 joydev i2c_i801 dell_wmi_descriptor soundcore i2c_smbus parport_pc parport mei_me dell_rbtn mei lpc_ich dell_smo8800 rfkill wmi_bmof zram ip_tables i915 i2c_algo_bit drm_kms_helper cec drm crct10dif_pclmul sdhci_pci crc32_pclmul cqhci sdhci crc32c_intel e1000e mmc_core ghash_clmulni_intel serio_raw wmi video fuse
CR2: ffff8f7b3100fdac