Backtrace

WARNING: CPU: 7 PID: 91726 at mm/vmalloc.c:3367 vfree.part.0+0x113/0x260
Modules linked in: uinput uhid snd_seq_dummy snd_hrtimer xt_mark xt_cgroup xt_MASQUERADE ip6t_REJECT ipt_REJECT nft_compat nft_queue nfnetlink_queue overlay 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 nf_tables nvidia_drm(POE) nvidia_modeset(POE) nvidia_uvm(POE) nvidia(POE) qrtr sunrpc rt2800usb rt2x00usb binfmt_misc rt2800lib rt2x00lib mac80211 libarc4 cfg80211 snd_usb_audio rfkill snd_hda_codec_realtek snd_usbmidi_lib snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_scodec_component snd_hda_intel intel_rapl_msr intel_rapl_common snd_ump x86_pkg_temp_thermal snd_intel_dspcfg snd_rawmidi joydev snd_intel_sdw_acpi intel_powerclamp snd_hda_codec coretemp kvm_intel snd_hda_core snd_hwdep drm_ttm_helper snd_seq ttm video kvm wmi snd_seq_device snd_pcm r8169 irqbypass snd_timer iTCO_wdt rapl snd realtek soundcore intel_pmc_bxt mei_hdcp
 intel_cstate iTCO_vendor_support mei_pxp gpio_ich mei_me mei i2c_i801 i2c_smbus pcspkr lpc_ich intel_uncore v4l2loopback_dc(OE) loop nfnetlink zram lz4hc_compress lz4_compress polyval_clmulni polyval_generic ghash_clmulni_intel sha512_ssse3 sha256_ssse3 sha1_ssse3 serio_raw ata_generic pata_acpi i2c_dev fuse videodev mc
CPU: 7 UID: 1000 PID: 91726 Comm: godot Tainted: P        W  OE       6.15.6-200.fc42.x86_64 #1 PREEMPT(lazy) 
Tainted: [P]=PROPRIETARY_MODULE, [W]=WARN, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: Gigabyte Technology Co., Ltd. H61M-D2-B3/H61M-D2-B3, BIOS F10 03/27/2012
RIP: 0010:vfree.part.0+0x113/0x260
Code: 48 8b 7b 20 e8 5e 13 02 00 48 89 df 48 83 c4 20 5b 5d 41 5c 41 5e e9 3c 0e 02 00 48 89 ee 48 c7 c7 38 d4 25 a2 e8 0d 92 ca ff <0f> 0b 48 83 c4 20 5b 5d 41 5c 41 5e c3 cc cc cc cc 85 c0 0f 84 21
RSP: 0018:ffffd39bcc387ce0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8b0e40cb5000 RCX: 0000000000000027
RDX: ffff8b116f59cb88 RSI: 0000000000000001 RDI: ffff8b116f59cb80
RBP: ffffd39d5ac1d000 R08: 0000000000000000 R09: ffffd39bcc387b88
R10: ffffffffa2d3bc48 R11: 00000000ffffdfff R12: ffff8b0e43f1fb60
R13: ffff8b0e40c4c4a0 R14: ffff8b0e4c479300 R15: 0000000000000000
FS:  00007fb0677fe6c0(0000) GS:ffff8b11cb9f0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000dcc05428600 CR3: 000000034ee9c005 CR4: 00000000001726f0
Call Trace:
 <TASK>
 v4l2_loopback_close+0x8b/0xf0 [v4l2loopback_dc]
 v4l2_release+0xd4/0x100 [videodev]
 __fput+0xe6/0x2a0
 __x64_sys_close+0x3d/0x80
 do_syscall_64+0x7b/0x160
 ? v4l2_ioctl+0x6a/0xb0 [videodev]
 ? __pfx_v4l2_ioctl+0x10/0x10 [videodev]
 ? __x64_sys_ioctl+0x56/0xc0
 ? syscall_exit_to_user_mode+0x10/0x210
 ? do_syscall_64+0x87/0x160
 ? process_one_work+0x1c1/0x350
 ? worker_enter_idle+0x69/0x110
 ? sched_clock+0x10/0x30
 ? sched_clock_cpu+0xb/0x30
 ? irqtime_account_irq+0x3c/0xc0
 ? handle_softirqs+0x1ae/0x340
 ? __irq_exit_rcu+0x4c/0xf0
 ? common_interrupt+0x47/0xa0
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb095688642
Code: 08 0f 85 81 42 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 66
RSP: 002b:00007fb0677fd298 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb095688642
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000022
RBP: 00007fb0677fd2d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000027dbc9c0
R13: 0000000000000022 R14: 00007fb0677fd420 R15: 000000000000001c
 </TASK>