Backtrace

BUG: unable to handle page fault for address: ffff9f3e475033d0
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 109801067 P4D 109801067 PUD 0 
Oops: 0000 [#1] SMP PTI
CPU: 1 PID: 3080 Comm: ThreadPoolForeg Tainted: G           OE     5.8.18-100.fc31.x86_64 #1
Hardware name: LENOVO 20HD000TUS/20HD000TUS, BIOS N1QET55W (1.30 ) 05/23/2017
RIP: 0010:kmem_cache_alloc+0x73/0x220
Code: 90 01 00 00 4d 8b 06 65 49 8b 50 08 65 4c 03 05 7b f9 d2 57 4d 8b 20 4d 85 e4 0f 84 7c 01 00 00 41 8b 46 20 49 8b 3e 4c 01 e0 <48> 8b 18 48 89 c1 49 33 9e 70 01 00 00 48 0f c9 48 31 cb 40 f6 c7
RSP: 0018:ffffb17b021d3d40 EFLAGS: 00010282
RAX: ffff9f3e475033d0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000000058b6 RSI: 0000000000000dc0 RDI: 00000000000313d0
RBP: 0000000000000dc0 R08: ffff9f3e128b13d0 R09: ffff9f3e07503bd0
R10: 00000000000001cf R11: 0000000000000000 R12: ffff9f3e47503360
R13: ffffffffa8397a48 R14: ffff9f3e100c5880 R15: ffff9f3e100c5880
FS:  00007fca2e4f4700(0000) GS:ffff9f3e12880000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff9f3e475033d0 CR3: 000000040cf70005 CR4: 00000000003606e0
Call Trace:
 locks_alloc_lock+0x18/0x80
 posix_lock_inode+0x181/0x780
 ? file_has_perm+0xa2/0xb0
 do_lock_file_wait+0x4e/0xc0
 ? _cond_resched+0x15/0x30
 ? kmem_cache_alloc+0x16c/0x220
 fcntl_setlk+0xba/0x280
 do_fcntl+0x523/0x640
 __x64_sys_fcntl+0x84/0xb0
 do_syscall_64+0x4d/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fca4cc1a434
Code: 66 0f 1f 44 00 00 f3 0f 1e fa 48 83 ec 18 64 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 83 fe 09 74 2b b8 48 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 44 48 8b 4c 24 08 64 48 33 0c 25 28 00 00 00
RSP: 002b:00007fca2e4f2b10 EFLAGS: 00000293 ORIG_RAX: 0000000000000048
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fca4cc1a434
RDX: 00007fca2e4f2c10 RSI: 0000000000000006 RDI: 00000000000000c3
RBP: 00007fca2e4f2c90 R08: 000055f8da138f00 R09: 000055f8da128990
R10: 0000000000082000 R11: 0000000000000293 R12: 000010f4bd618370
R13: 0000000000000000 R14: 000010f4bd641c00 R15: 000010f4bd73c480
Modules linked in: rfcomm ccm xt_CHECKSUM xt_MASQUERADE nf_nat_tftp nf_conntrack_tftp nf_conntrack_netbios_ns nf_conntrack_broadcast tun xt_CT bridge stp llc ip6t_REJECT nf_reject_ipv6 ip6t_rpfilter ipt_REJECT nf_reject_ipv4 xt_conntrack 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 vboxnetadp(OE) vboxnetflt(OE) ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter vboxdrv(OE) cmac bnep sunrpc intel_rapl_msr iwlmvm ee1004 mei_hdcp iTCO_wdt intel_pmc_bxt iTCO_vendor_support mac80211 libarc4 uvcvideo btusb iwlwifi btrtl btbcm btintel videobuf2_vmalloc intel_rapl_common videobuf2_memops snd_soc_skl bluetooth videobuf2_v4l2 videobuf2_common x86_pkg_temp_thermal intel_powerclamp coretemp videodev snd_soc_sst_ipc kvm_intel snd_soc_sst_dsp snd_hda_ext_core kvm snd_soc_acpi_intel_match ecdh_generic mc ecc
 snd_soc_acpi snd_soc_core snd_hda_codec_hdmi snd_compress snd_hda_codec_realtek ac97_bus snd_hda_codec_generic irqbypass snd_pcm_dmaengine rapl intel_cstate cfg80211 snd_hda_intel joydev snd_intel_dspcfg snd_hda_codec intel_uncore snd_hda_core snd_hwdep snd_seq snd_seq_device i2c_i801 snd_pcm pcspkr wmi_bmof i2c_smbus intel_wmi_thunderbolt mei_me snd_timer ucsi_acpi intel_xhci_usb_role_switch mei roles thinkpad_acpi intel_pch_thermal typec_ucsi typec ledtrig_audio snd soundcore rfkill acpi_pad ip_tables i915 e1000e crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit ghash_clmulni_intel drm_kms_helper cec drm serio_raw uas usb_storage wmi video fuse
CR2: ffff9f3e475033d0