Backtrace

WARNING: CPU: 3 PID: 7231 at mm/vmalloc.c:3367 vfree.part.0+0x113/0x260
Modules linked in: uinput rfcomm snd_seq_dummy snd_hrtimer xt_conntrack xt_MASQUERADE bridge stp llc xt_set ip_set xt_addrtype nft_compat 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 qrtr bnep snd_sof_pci_intel_skl snd_sof_intel_hda_generic soundwire_intel snd_sof_intel_hda_sdw_bpt snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda_mlink snd_sof_intel_hda soundwire_cadence snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils snd_soc_acpi_intel_match snd_soc_acpi_intel_sdca_quirks soundwire_generic_allocation snd_soc_acpi crc8 soundwire_bus snd_soc_sdca snd_soc_avs snd_soc_hda_codec snd_hda_ext_core intel_uncore_frequency intel_uncore_frequency_common snd_soc_core snd_hda_codec_hdmi snd_compress jc42 intel_tcc_cooling ac97_bus snd_hda_codec_generic x86_pkg_temp_thermal snd_pcm_dmaengine sunrpc iwlmvm
 intel_powerclamp snd_hda_intel snd_intel_dspcfg iTCO_wdt snd_intel_sdw_acpi coretemp snd_hda_codec intel_pmc_bxt kvm_intel iTCO_vendor_support snd_hda_core mei_hdcp ee1004 mac80211 mei_pxp btusb snd_hwdep kvm btrtl libarc4 intel_rapl_msr btintel snd_seq irqbypass rapl btbcm iwlwifi btmtk snd_seq_device intel_cstate asus_nb_wmi i2c_i801 intel_uncore snd_pcm bluetooth asus_wmi cfg80211 uvcvideo sparse_keymap processor_thermal_device_pci_legacy platform_profile wmi_bmof pcspkr processor_thermal_device uvc snd_timer i2c_smbus processor_thermal_wt_hint snd processor_thermal_rfim mei_me processor_thermal_rapl soundcore intel_rapl_common rfkill videobuf2_vmalloc videobuf2_memops intel_pch_thermal processor_thermal_wt_req mei videobuf2_v4l2 processor_thermal_power_floor idma64 videobuf2_common processor_thermal_mbox int340x_thermal_zone intel_xhci_usb_role_switch intel_soc_dts_iosf vfat fat intel_pmc_core pmt_telemetry pmt_class intel_vsec int3400_thermal acpi_pad asus_wireless acpi_thermal_rel joydev
 v4l2loopback(OE) v4l2loopback_dc(OE) loop nfnetlink zram lz4hc_compress lz4_compress i915 i2c_algo_bit polyval_clmulni drm_buddy polyval_generic ghash_clmulni_intel ttm spi_pxa2xx_platform hid_multitouch sha512_ssse3 drm_display_helper sha256_ssse3 dw_dmac i2c_hid_acpi spi_pxa2xx_core sha1_ssse3 cec i2c_hid video wmi serio_raw i2c_dev fuse videodev mc
CPU: 3 UID: 1000 PID: 7231 Comm: VideoDevicePoll Tainted: G        W  OE       6.15.4-200.fc42.x86_64 #1 PREEMPT(lazy) 
Tainted: [W]=WARN, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: ASUSTeK COMPUTER INC. X510UA/X510UA, BIOS X510UA.312 04/29/2020
RIP: 0010:vfree.part.0+0x113/0x260
Code: 48 8b 7b 20 e8 7e 13 02 00 48 89 df 48 83 c4 20 5b 5d 41 5c 41 5e e9 5c 0e 02 00 48 89 ee 48 c7 c7 00 c4 a5 99 e8 ed 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:ffffccb845863c30 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8a59063b9000 RCX: 0000000000000027
RDX: ffff8a5c4ed9cb88 RSI: 0000000000000001 RDI: ffff8a5c4ed9cb80
RBP: ffffccb855c0a000 R08: 0000000000000000 R09: ffffccb845863ad8
R10: ffffffff9a53bb88 R11: 00000000ffffdfff R12: ffff8a5909da5958
R13: ffff8a5a41817220 R14: ffff8a5900463180 R15: 0000000000000000
FS:  00007fb70dee66c0(0000) GS:ffff8a5cb39f1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000dac0fada000 CR3: 0000000246c40001 CR4: 00000000003726f0
Call Trace:
 <TASK>
 v4l2_loopback_close+0x8b/0xf0 [v4l2loopback_dc]
 v4l2_release+0xd1/0x100 [videodev]
 __fput+0xe3/0x2a0
 __x64_sys_close+0x3d/0x80
 do_syscall_64+0x7b/0x160
 ? do_syscall_64+0x87/0x160
 ? do_filp_open+0xd8/0x180
 ? alloc_fd+0xbd/0x110
 ? do_sys_openat2+0xa2/0xe0
 ? __x64_sys_openat+0x61/0xa0
 ? syscall_exit_to_user_mode+0x10/0x210
 ? do_syscall_64+0x87/0x160
 ? __x64_sys_openat+0x61/0xa0
 ? syscall_exit_to_user_mode+0x10/0x210
 ? do_syscall_64+0x87/0x160
 ? do_syscall_64+0x87/0x160
 ? common_interrupt+0x47/0xa0
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb796e489cc
Code: 0f 05 48 3d 00 f0 ff ff 77 3c c3 0f 1f 00 55 48 89 e5 48 83 ec 10 89 7d fc e8 f0 98 f8 ff 8b 7d fc 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 2c 89 d7 89 45 fc e8 52 99 f8 ff 8b 45 fc c9
RSP: 002b:00007fb70dee53f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 000000000000004a RCX: 00007fb796e489cc
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000004a
RBP: 00007fb70dee5400 R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb70f5f45f0 R15: 00007fb70dee54f0
 </TASK>