Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000034
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: 0002 [#1] SMP PTI
CPU: 3 PID: 545 Comm: systemd-udevd Tainted: G        W         5.11.11-300.fc34.x86_64 #1
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
RIP: 0010:unlink_anon_vmas+0xce/0x1d0
Code: f0 00 00 00 48 8d 7d 08 e8 cf a3 91 00 49 8d 77 40 4c 89 f7 e8 b3 e6 fd ff 49 8b 57 40 48 85 d2 0f 85 6f ff ff ff 49 8b 47 38 <83> 68 34 01 eb a5 48 8b 04 24 48 8b 80 88 00 00 00 48 85 c0 74 04
RSP: 0018:ffffb818c03cbd78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff940382f535c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00007fe8692a3000 R09: 0000000000000000
R10: ffff940382f534c0 R11: 0000000000000001 R12: ffff940382f539d0
R13: ffff940381ed8460 R14: ffff940382f539c0 R15: ffff940381ed9cb8
FS:  0000000000000000(0000) GS:ffff940693ac0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000034 CR3: 00000002caa10006 CR4: 00000000000706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 free_pgtables+0x93/0x100
 exit_mmap+0xa6/0x1c0
 mmput+0x61/0x140
 do_exit+0x30c/0xac0
 ? audit_filter_inodes+0x1e/0x100
 ? auditd_test_task+0x33/0x40
 ? __audit_syscall_entry+0x100/0x130
 do_group_exit+0x33/0xa0
 __x64_sys_exit_group+0x14/0x20
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fe86937f331
Code: Unable to access opcode bytes at RIP 0x7fe86937f307.
RSP: 002b:00007ffcbb3cc758 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe86937f331
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007ffcbb3cc850 R08: fffffffffffffea0 R09: 0000000000000004
R10: 0000000000000010 R11: 0000000000000246 R12: 00007ffcbb3cc7e0
R13: 0000561723589f60 R14: 0000000000000000 R15: 0000561723592cd0
Modules linked in: 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 rfkill ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter sunrpc vfat fat snd_hda_codec_idt snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation snd_soc_core snd_compress snd_pcm_dmaengine soundwire_cadence snd_hda_codec snd_hda_core iTCO_wdt ac97_bus intel_rapl_msr intel_pmc_bxt snd_hwdep iTCO_vendor_support snd_seq intel_rapl_common snd_seq_device rapl snd_pcm snd_timer pcspkr joydev snd lpc_ich soundcore i2c_piix4 vboxguest zram ip_tables vmwgfx drm_kms_helper crct10dif_pclmul crc32_pclmul cec crc32c_intel ttm drm ghash_clmulni_intel
 video serio_raw nvme nvme_core e1000 ata_generic pata_acpi fuse
CR2: 0000000000000034