Backtrace

WARNING: CPU: 5 PID: 3298 at lib/refcount.c:25 refcount_warn_saturate+0xe5/0x110
Modules linked in: spinlock_test(OE-) overlay uinput snd_seq_dummy snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore 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 sunrpc ip_set nf_tables qrtr vfat fat intel_rapl_msr intel_rapl_common intel_uncore_frequency_common skx_edac_common nfit libnvdimm ppdev pktcdvd xen_netfront parport_pc i2c_piix4 parport i2c_smbus joydev loop nfnetlink vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vsock zram vmw_vmci lz4hc_compress lz4_compress polyval_clmulni ghash_clmulni_intel xen_blkfront sha512_ssse3 sha1_ssse3 cirrus_qemu serio_raw ata_generic pata_acpi fuse
CPU: 5 UID: 0 PID: 3298 Comm: rmmod Tainted: G           OE       6.16.10-200.fc42.x86_64 #1 PREEMPT(lazy) 
Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: Xen HVM domU, BIOS 4.17 09/02/2025
RIP: 0010:refcount_warn_saturate+0xe5/0x110
Code: b3 79 ff 0f 0b e9 5b 41 92 00 80 3d 78 46 fe 01 00 0f 85 5e ff ff ff 48 c7 c7 d8 76 ca b0 c6 05 64 46 fe 01 01 e8 ab b3 79 ff <0f> 0b c3 cc cc cc cc 48 c7 c7 30 77 ca b0 c6 05 48 46 fe 01 01 e8
RSP: 0018:ffffd1e885603c78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8cedf59d0000 RCX: 0000000000000027
RDX: ffff8ceecb89cf88 RSI: 0000000000000001 RDI: ffff8ceecb89cf80
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffd1e885603b20
R10: ffffffffb1739848 R11: 00000000ffffdfff R12: ffff8cedf59d0000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f3dfba45b80(0000) GS:ffff8cef192dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3dfb238f90 CR3: 0000000024658006 CR4: 00000000007706f0
PKRU: 55555554
Call Trace:
 <TASK>
 kthread_stop+0x16c/0x180
 spinlock_test_exit+0x4b/0xf50 [spinlock_test]
 __do_sys_delete_module.isra.0+0x1b2/0x2e0
 do_syscall_64+0x7e/0x250
 ? do_read_fault+0x107/0x260
 ? handle_pte_fault+0x118/0x240
 ? do_fault+0x150/0x260
 ? __handle_mm_fault+0x3a7/0x700
 ? seq_read_iter+0x20e/0x480
 ? count_memcg_events+0x15d/0x230
 ? handle_mm_fault+0x248/0x360
 ? do_user_addr_fault+0x21a/0x690
 ? clear_bhb_loop+0x50/0xa0
 ? clear_bhb_loop+0x50/0xa0
 ? clear_bhb_loop+0x50/0xa0
 ? clear_bhb_loop+0x50/0xa0
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f3dfb30406b
Code: 73 01 c3 48 8b 0d 95 1d 0f 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 65 1d 0f 00 f7 d8 64 89 01 48
RSP: 002b:00007ffdb502f938 EFLAGS: 00000202 ORIG_RAX: 00000000000000b0
RAX: ffffffffffffffda RBX: 000055bd7ab12750 RCX: 00007f3dfb30406b
RDX: 0000000000000003 RSI: 0000000000000800 RDI: 000055bd7ab127b8
RBP: 00007ffdb502f960 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffdb5030724 R14: 00007ffdb502fbb0 R15: 0000000000000000
 </TASK>