Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP PTI
CPU: 7 PID: 2098 Comm: gnome-session-b Not tainted 5.8.18-100.fc31.x86_64 #1
Hardware name: Acer TravelMate X3410-M/Apus_KL, BIOS V1.01 11/07/2018
RIP: 0010:__wake_up_common+0x55/0x180
Code: 41 f6 01 04 0f 85 ab 00 00 00 48 8b 43 08 4c 8d 40 e8 48 8d 43 08 48 89 04 24 48 89 c6 49 8d 40 18 48 39 c6 0f 84 e2 00 00 00 <49> 8b 40 18 89 6c 24 14 31 ed 4c 8d 60 e8 41 8b 18 f6 c3 04 75 59
RSP: 0018:ffffb3ab80607c88 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff8e5f67265e80 RCX: 0000000000000001
RDX: 0000000000000001 RSI: ffff8e5f67265e88 RDI: ffff8e5f67265e80
RBP: 0000000000000001 R08: ffffffffffffffe8 R09: ffffb3ab80607cd8
R10: ffff8e5ebc7c2400 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000001 R15: 00000000000000c3
FS:  00007fc76a644540(0000) GS:ffff8e5fdedc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000004591f4005 CR4: 00000000003606e0
Call Trace:
 __wake_up_common_lock+0x6c/0x90
 sock_def_readable+0x37/0x60
 unix_stream_sendmsg+0x10e/0x3d0
 sock_sendmsg+0x5e/0x60
 sock_write_iter+0x89/0xd0
 new_sync_write+0x174/0x190
 vfs_write+0x1c3/0x1f0
 ksys_write+0x87/0xc0
 do_syscall_64+0x4d/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fc76bec04df
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 59 49 f9 ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 2d 44 89 c7 48 89 44 24 08 e8 8c 49 f9 ff 48
RSP: 002b:00007ffc12c03470 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007fc76bec04df
RDX: 0000000000000010 RSI: 000055a983bf34a0 RDI: 000000000000000f
RBP: 000055a983bf34a0 R08: 0000000000000000 R09: 000055a983c628a0
R10: 000055a983cc3900 R11: 0000000000000293 R12: 000055a983c959b0
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
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 ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat squashfs loop snd_soc_skl iwlmvm snd_hda_codec_hdmi snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core mac80211 snd_hda_codec_realtek snd_compress snd_hda_codec_generic ac97_bus snd_pcm_dmaengine ledtrig_audio snd_hda_intel snd_intel_dspcfg x86_pkg_temp_thermal intel_powerclamp snd_hda_codec coretemp libarc4 snd_hda_core kvm_intel iTCO_wdt snd_hwdep ee1004 intel_pmc_bxt snd_seq iTCO_vendor_support
 iwlwifi uvcvideo kvm btusb mei_hdcp intel_rapl_msr btrtl snd_seq_device videobuf2_vmalloc btbcm irqbypass videobuf2_memops btintel rapl snd_pcm videobuf2_v4l2 intel_cstate bluetooth cfg80211 intel_uncore snd_timer videobuf2_common acer_wmi pcspkr snd intel_wmi_thunderbolt i2c_i801 sparse_keymap i2c_smbus videodev ecdh_generic wmi_bmof soundcore joydev rfkill processor_thermal_device mc intel_rapl_common mei_me ecc ucsi_acpi mei idma64 intel_xhci_usb_role_switch typec_ucsi intel_soc_dts_iosf roles intel_pch_thermal typec int3403_thermal int340x_thermal_zone acer_wireless int3400_thermal acpi_thermal_rel acpi_pad ip_tables i915 i2c_algo_bit crct10dif_pclmul crc32_pclmul drm_kms_helper crc32c_intel cec ghash_clmulni_intel drm serio_raw r8169 wmi pinctrl_sunrisepoint video pinctrl_intel fuse
CR2: 0000000000000000