[    0.645777] /dev/loop0: Can't open blockdev
[    4.692097] BUG: kernel NULL pointer dereference, address: 0000000000000008
[    4.692818] #PF: supervisor write access in kernel mode
[    4.693195] #PF: error_code(0x0002) - not-present page
[    4.693569] PGD 0 P4D 0
[    4.693792] Oops: 0002 [#1] SMP NOPTI
[    4.694082] CPU: 0 PID: 415 Comm: (journald) Tainted: G           OE     5.4.43 #1-NixOS
[    4.694681] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[    4.695388] RIP: 0010:_raw_spin_lock+0xc/0x20
[    4.695732] Code: ff 01 00 00 75 06 4c 89 e0 41 5c c3 e8 6d 48 a0 ff 4c 89 e0 41 5c c3 0f 1f 80 00 00 00 00 0f 1f 44 00 00 31 c0 ba 01 00 00 00 <3e> 0f b1 17 75 01 c3 89 c6 e8 86 30 a0 ff 66 90 c3 0f 1f 00 0f 1f
[    4.697032] RSP: 0018:ffffaea480137e78 EFLAGS: 00010046
[    4.697426] RAX: 0000000000000000 RBX: 0000000000004020 RCX: 00000000000028e7
[    4.697898] RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000008
[    4.698355] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[    4.698815] R10: 0000000000000001 R11: 800000000dc99161 R12: ffff9bd4cbb54400
[    4.699275] R13: 0000000000000082 R14: ffff9bd4cee16b10 R15: 0000000000000000
[    4.699727] FS:  00007f0cefe99800(0000) GS:ffff9bd4cee00000(0000) knlGS:0000000000000000
[    4.700265] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    4.700637] CR2: 0000000000000008 CR3: 000000000d2fe000 CR4: 00000000000406f0
[    4.701100] Call Trace:
[    4.701307]  speculation_ctrl_update+0x17e/0x1e0
[    4.701642]  speculation_ctrl_update_current+0x1b/0x20
[    4.701989]  ssb_prctl_set+0xb2/0xd0
[    4.702257]  arch_seccomp_spec_mitigate+0x2a/0x60
[    4.702578]  do_seccomp+0x864/0x8d0
[    4.702834]  do_syscall_64+0x4e/0x120
[    4.703097]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[    4.703443] RIP: 0033:0x7f0cf03dc8f9
[    4.703702] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 57 65 0c 00 f7 d8 64 89 01 48
[    4.704868] RSP: 002b:00007ffcbfe54a38 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
[    4.705455] RAX: ffffffffffffffda RBX: 0000555c32929820 RCX: 00007f0cf03dc8f9
[    4.705920] RDX: 0000555c328b66d0 RSI: 0000000000000000 RDI: 0000000000000001
[    4.706380] RBP: 0000555c328b66d0 R08: 0000555c32929820 R09: 0000555c3287ca90
[    4.706830] R10: 0000000000000007 R11: 0000000000000246 R12: 000000000000002d
[    4.707281] R13: 0040000000002001 R14: 00007f0cf07cf1c4 R15: 0000000000000000
[    4.707739] Modules linked in: ip_tables x_tables ipv6 nf_defrag_ipv6 crc_ccitt autofs4 squashfs zstd_decompress isofs sr_mod sd_mod cdrom ohci_pci ehci_pci ohci_hcd ehci_hcd ata_piix usbcore libata atkbd libps2 crc32c_intel rtc_cmos usb_common i8042 serio dm_mod vboxsf(OE) vboxguest(OE) vmw_pvscsi scsi_mod overlay loop
[    4.709525] CR2: 0000000000000008
[    4.709784] ---[ end trace 4f7c4a43304040a3 ]---
[    4.710097] RIP: 0010:_raw_spin_lock+0xc/0x20
[    4.710406] Code: ff 01 00 00 75 06 4c 89 e0 41 5c c3 e8 6d 48 a0 ff 4c 89 e0 41 5c c3 0f 1f 80 00 00 00 00 0f 1f 44 00 00 31 c0 ba 01 00 00 00 <3e> 0f b1 17 75 01 c3 89 c6 e8 86 30 a0 ff 66 90 c3 0f 1f 00 0f 1f
[    4.711607] RSP: 0018:ffffaea480137e78 EFLAGS: 00010046
[    4.711966] RAX: 0000000000000000 RBX: 0000000000004020 RCX: 00000000000028e7
[    4.712428] RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000008
[    4.712889] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[    4.713344] R10: 0000000000000001 R11: 800000000dc99161 R12: ffff9bd4cbb54400
[    4.713792] R13: 0000000000000082 R14: ffff9bd4cee16b10 R15: 0000000000000000
[    4.714244] FS:  00007f0cefe99800(0000) GS:ffff9bd4cee00000(0000) knlGS:0000000000000000
[    4.714784] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    4.715154] CR2: 0000000000000008 CR3: 000000000d2fe000 CR4: 00000000000406f0