Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: 0002 [#2] SMP PTI
CPU: 1 PID: 449 Comm: udevadm Tainted: G      D W         5.11.15-300.fc34.x86_64 #1
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
RIP: 0010:__rb_erase_color+0x1a0/0x250
Code: 89 ef 4d 89 f4 e8 60 28 79 00 e9 a2 fe ff ff 4c 89 60 10 eb e7 4d 8b 74 24 08 48 89 e8 48 83 c8 01 4c 89 75 10 49 89 6c 24 08 <49> 89 06 48 8b 45 00 49 89 04 24 4c 89 65 00 48 83 e0 fc 74 23 48
RSP: 0018:ffffb422402d7d40 EFLAGS: 00010282
RAX: ffffa077434b8829 RBX: ffffffff92299c90 RCX: 000000000000008c
RDX: ffffa07744383698 RSI: ffffa077411cd9a8 RDI: ffffa07741d91698
RBP: ffffa077434b8828 R08: 0000000000000000 R09: 0000000000000001
R10: 000000000010372e R11: 0000000000000000 R12: ffffa07742667828
R13: ffffa077411cd9a8 R14: 0000000000000000 R15: ffffa07742998578
FS:  00007f71d629ab40(0000) GS:ffffa0775bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000010276a003 CR4: 00000000000306e0
Call Trace:
 unlink_file_vma+0x3d/0x60
 free_pgtables+0x6d/0x100
 unmap_region+0xba/0xe0
 __do_munmap+0x278/0x500
 __vm_munmap+0x6e/0x100
 __x64_sys_munmap+0x28/0x30
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f71d6ead39b
Code: 8b 15 d9 7a 0c 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb 89 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a5 7a 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffc2de4da08 EFLAGS: 00000202 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000561348f0a6e0 RCX: 00007f71d6ead39b
RDX: 0000561348f5ba20 RSI: 000000000008c62a RDI: 00007f71d620d000
RBP: 0000561348f0a0a0 R08: 0000561348f591a0 R09: 00007f71d6ef21e0
R10: 0000561348f0cdc0 R11: 0000000000000202 R12: 0000000000000000
R13: 00000000000019e7 R14: 00007f71d6f8bca0 R15: 0000000000000000
Modules linked in: 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 ac97_bus snd_hwdep intel_rapl_msr snd_seq intel_rapl_common snd_seq_device snd_pcm rapl snd_timer joydev snd pcspkr vboxguest i2c_piix4 soundcore zram ip_tables vmwgfx drm_kms_helper cec ttm drm e1000 crc32c_intel serio_raw ata_generic pata_acpi video fuse
CR2: 0000000000000000