Additional info:
reporter:       libreport-2.17.11
WARNING: CPU: 0 PID: 2437 at lib/refcount.c:28 refcount_warn_saturate+0xbe/0x110
Modules linked in: uinput snd_seq_dummy snd_hrtimer tls 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 nf_log_syslog nft_log nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 rfkill ip_set nf_tables nfnetlink qrtr sunrpc snd_hda_codec_idt snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm intel_rapl_msr joydev snd_timer intel_rapl_common intel_uncore_frequency_common rapl vfat fat snd pcspkr pktcdvd soundcore vboxguest i2c_piix4 loop zram xfs vmwgfx crct10dif_pclmul crc32_pclmul crc32c_intel polyval_clmulni polyval_generic ghash_clmulni_intel drm_ttm_helper ttm sha512_ssse3 e1000 video serio_raw wmi fuse
CPU: 0 PID: 2437 Comm: kscreenlocker_g Not tainted 6.4.10-100.fc37.x86_64 #1
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
RIP: 0010:refcount_warn_saturate+0xbe/0x110
Code: 01 01 e8 75 24 92 ff 0f 0b c3 cc cc cc cc 80 3d 82 36 ae 01 00 75 85 48 c7 c7 78 3d 93 ad c6 05 72 36 ae 01 01 e8 52 24 92 ff <0f> 0b c3 cc cc cc cc 80 3d 5d 36 ae 01 00 0f 85 5e ff ff ff 48 c7
RSP: 0018:ffffaf7440c2fd38 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8fb851e59800 RCX: 0000000000000000
RDX: ffff8fb87d42e580 RSI: ffff8fb87d421540 RDI: ffff8fb87d421540
RBP: ffff8fb80ae5cc00 R08: 0000000000000000 R09: ffffaf7440c2fbc8
R10: 0000000000000003 R11: ffffffffae146508 R12: 00000000000000a2
R13: ffff8fb80ae5cc58 R14: ffff8fb80ae5cc40 R15: 00000000000000a2
FS:  00007f55f031b9c0(0000) GS:ffff8fb87d400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562bc59d3958 CR3: 000000002c300001 CR4: 00000000000706f0
Call Trace:
 <TASK>
 ? refcount_warn_saturate+0xbe/0x110
 ? __warn+0x81/0x130
 ? refcount_warn_saturate+0xbe/0x110
 ? report_bug+0x171/0x1a0
 ? prb_read_valid+0x1b/0x30
 ? handle_bug+0x41/0x70
 ? exc_invalid_op+0x17/0x70
 ? asm_exc_invalid_op+0x1a/0x20
 ? refcount_warn_saturate+0xbe/0x110
 ? refcount_warn_saturate+0xbe/0x110
 drm_gem_handle_delete+0x90/0xd0
 ? __pfx_vmw_bo_unref_ioctl+0x10/0x10 [vmwgfx]
 drm_ioctl_kernel+0xcd/0x170
 drm_ioctl+0x267/0x4a0
 ? __pfx_vmw_bo_unref_ioctl+0x10/0x10 [vmwgfx]
 ? __pfx_drm_ioctl+0x10/0x10
 vmw_generic_ioctl+0xa7/0x110 [vmwgfx]
 __x64_sys_ioctl+0x94/0xd0
 do_syscall_64+0x5f/0x90
 entry_SYSCALL_64_after_hwframe+0x77/0xe1
RIP: 0033:0x7f55f2723d6f
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 18 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fff09a32b30 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f55acafd760 RCX: 00007f55f2723d6f
RDX: 00007fff09a32bd0 RSI: 0000000040086442 RDI: 000000000000000e
RBP: 00007fff09a32bd0 R08: 00007f55ac9c9600 R09: 0000000000000000
R10: 00007fff09a99080 R11: 0000000000000246 R12: 0000000040086442
R13: 000000000000000e R14: 0000560344a14ca0 R15: 00007fff09a32e90
 </TASK>

Potential duplicate: bug 2227524