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 [#1] PREEMPT SMP NOPTI
CPU: 1 PID: 43435 Comm: rmmod Tainted: G        W  OE      6.8.5-301.fc40.x86_64 #1
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
RIP: 0010:kthread_stop+0x47/0x180
Code: 00 f0 0f c1 43 28 85 c0 0f 84 3c 01 00 00 8d 50 01 09 c2 0f 88 01 01 00 00 f6 43 2e 20 0f 84 0e 01 00 00 48 8b ab 78 0a 00 00 <f0> 80 4d 00 02 48 89 df e8 8c f5 ff ff f0 80 4b 02 02 48 89 df e8
RSP: 0018:ffffb17196e47e08 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffff8ebd63250000 RCX: 0000000000000027
RDX: ffff8ebe5a1218c8 RSI: 0000000000000001 RDI: ffff8ebe5a1218c0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb17196e47c70
R10: ffffffff83516808 R11: 0000000000000003 R12: ffff8ebd63250028
R13: ffffb17196e47f58 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fe3b1d0b740(0000) GS:ffff8ebe5a100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000cf402000 CR4: 00000000000506f0
Call Trace:
 <TASK>
 ? __die+0x23/0x70
 ? page_fault_oops+0x174/0x530
 ? exc_page_fault+0x7f/0x180
 ? asm_exc_page_fault+0x26/0x30
 ? kthread_stop+0x47/0x180
 ? kthread_stop+0x174/0x180
 mutex_lab_exit+0x19/0xfa0 [mutex_lab_insecure]
 __do_sys_delete_module.isra.0+0x198/0x2f0
 do_syscall_64+0x83/0x170
 ? __x64_sys_close+0x3d/0x80
 ? kmem_cache_free+0x3af/0x3d0
 ? syscall_exit_to_user_mode+0x80/0x230
 ? clear_bhb_loop+0x55/0xb0
 ? clear_bhb_loop+0x55/0xb0
 ? clear_bhb_loop+0x55/0xb0
 entry_SYSCALL_64_after_hwframe+0x78/0x80
RIP: 0033:0x7fe3b172c3fb
Code: 73 01 c3 48 8b 0d 1d 9a 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ed 99 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffda12bd078 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
RAX: ffffffffffffffda RBX: 000055f10136d700 RCX: 00007fe3b172c3fb
RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055f10136d768
RBP: 00007ffda12bd0a0 R08: 1999999999999999 R09: 0000000000000000
R10: 00007fe3b17a5fe0 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffda12bd2f0 R14: 00007ffda12bd2f8 R15: 0000000000000000
 </TASK>
Modules linked in: mutex_lab_insecure(OE-) uinput snd_seq_dummy snd_hrtimer 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 nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 rfkill ip_set nf_tables qrtr sunrpc binfmt_misc intel_rapl_msr intel_rapl_common intel_uncore_frequency_common snd_intel8x0 snd_ac97_codec intel_pmc_core ac97_bus intel_vsec pmt_telemetry snd_seq pmt_class snd_seq_device rapl snd_pcm snd_timer pcspkr snd vboxguest soundcore i2c_piix4 joydev pktcdvd loop nfnetlink zram crct10dif_pclmul crc32_pclmul crc32c_intel polyval_clmulni polyval_generic ghash_clmulni_intel vmwgfx sha512_ssse3 video sha256_ssse3 drm_ttm_helper sha1_ssse3 e1000 ttm wmi serio_raw ata_generic pata_acpi ip6_tables ip_tables fuse
CR2: 0000000000000000