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: 0 PID: 26695 Comm: firefox Tainted: G          I       5.8.15-301.fc33.x86_64 #1
Hardware name: MSI MS-7522/MSI X58 Pro-E (MS-7522), BIOS V8.15 03/19/2011
RIP: 0010:__list_del_entry_valid+0x2d/0x4c
Code: 4c 8b 47 08 48 b8 00 01 00 00 00 00 ad de 48 39 c2 0f 84 71 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c0 0f 84 91 00 00 00 <49> 8b 30 48 39 fe 0f 85 71 00 00 00 48 8b 52 08 48 39 f2 0f 85 56
RSP: 0018:ffffaffac2817ab8 EFLAGS: 00010017
RAX: dead000000000122 RBX: ffffaffac2817d30 RCX: 0000000000000001
RDX: ffff9afd867a0388 RSI: ffffaffac2817d30 RDI: ffffaffac2817d48
RBP: ffff9afd867a0380 R08: 0000000000000000 R09: 000000000000001e
R10: 0000000000004000 R11: 000000000000001e R12: 0000000000000282
R13: ffffaffac2817ca0 R14: 0000000000000003 R15: ffff9afd912d4300
FS:  00007f3bf9ace780(0000) GS:ffff9aff27a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000004c6f60000 CR4: 00000000000006f0
Call Trace:
 remove_wait_queue+0x20/0x60
 poll_freewait+0x3d/0xa0
 do_sys_poll+0x454/0x550
 ? scm_recv.constprop.0+0x33/0x150
 ? avc_has_perm+0x3b/0x160
 ? unix_stream_read_generic+0x1c1/0x820
 ? get_order+0x20/0x20
 ? get_order+0x20/0x20
 ? get_order+0x20/0x20
 ? get_order+0x20/0x20
 ? ___sys_recvmsg+0x7b/0xe0
 ? pipe_read+0x359/0x460
 ? do_iter_write+0xdf/0x190
 ? __sys_recvmsg+0x65/0x80
 __x64_sys_poll+0x27/0x110
 do_syscall_64+0x4d/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f3bf9bc9a5f
Code: 54 24 1c 48 89 74 24 10 48 89 7c 24 08 e8 39 fa f8 ff 8b 54 24 1c 48 8b 74 24 10 41 89 c0 48 8b 7c 24 08 b8 07 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 89 44 24 08 e8 8d fa f8 ff 8b 44
RSP: 002b:00007ffd19b73e00 EFLAGS: 00000293 ORIG_RAX: 0000000000000007
RAX: ffffffffffffffda RBX: 00007f3bf9892520 RCX: 00007f3bf9bc9a5f
RDX: 00000000ffffffff RSI: 0000000000000004 RDI: 00007f3be2145800
RBP: 00007ffd19b73e30 R08: 0000000000000000 R09: 00007f3bf9acf1a0
R10: 00007ffd19beb080 R11: 0000000000000293 R12: 0000000000000001
R13: 00007f3be2145800 R14: 0000000000000004 R15: 00000000ffffffff
Modules linked in: xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun 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 sunrpc snd_hda_codec_realtek snd_hda_codec_generic intel_powerclamp ledtrig_audio ath9k snd_hda_codec_hdmi coretemp ath9k_common kvm_intel ath9k_hw snd_hda_intel snd_intel_dspcfg mac80211 snd_hda_codec kvm snd_hda_core ath snd_hwdep irqbypass cfg80211 snd_seq joydev iTCO_wdt rfkill intel_pmc_bxt xpad libarc4 snd_seq_device ff_memless intel_cstate iTCO_vendor_support snd_pcm intel_uncore mxm_wmi gpio_ich snd_timer snd pcspkr soundcore i2c_i801
 i2c_smbus acpi_cpufreq i7core_edac i5500_temp lpc_ich binfmt_misc zram ip_tables amdgpu iommu_v2 gpu_sched i2c_algo_bit ttm drm_kms_helper cec firewire_ohci crc32c_intel firewire_core drm ata_generic pata_acpi crc_itu_t serio_raw r8169 pata_jmicron wmi fuse
CR2: 0000000000000000