Backtrace

WARNING: CPU: 2 PID: 4470 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 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 ip_set nf_tables qrtr bnep snd_sof_pci_intel_skl snd_sof_intel_hda_generic soundwire_intel soundwire_cadence snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda_mlink snd_sof_intel_hda 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 soundwire_bus snd_soc_sdca snd_soc_avs snd_hda_codec_hdmi sunrpc snd_soc_hda_codec snd_hda_ext_core snd_hda_codec_generic iwlmvm snd_soc_core intel_uncore_frequency snd_compress intel_uncore_frequency_common ac97_bus snd_pcm_dmaengine snd_hda_intel snd_intel_dspcfg mac80211 snd_intel_sdw_acpi intel_tcc_cooling
 x86_pkg_temp_thermal intel_powerclamp snd_hda_codec coretemp snd_hda_core jc42 kvm_intel iTCO_wdt snd_hwdep intel_pmc_bxt libarc4 iTCO_vendor_support snd_seq kvm ee1004 snd_seq_device mei_hdcp btusb mei_pxp btrtl snd_pcm btintel irqbypass iwlwifi processor_thermal_device_pci_legacy intel_rapl_msr btbcm processor_thermal_device rapl btmtk processor_thermal_wt_hint snd_timer intel_cstate asus_nb_wmi cfg80211 bluetooth processor_thermal_rfim asus_wmi i2c_i801 intel_uncore sparse_keymap snd uvcvideo mei_me i2c_smbus platform_profile wmi_bmof uvc soundcore videobuf2_vmalloc vfat processor_thermal_rapl fat pcspkr intel_rapl_common processor_thermal_wt_req videobuf2_memops videobuf2_v4l2 mei processor_thermal_power_floor rfkill videobuf2_common processor_thermal_mbox intel_pch_thermal idma64 int340x_thermal_zone intel_soc_dts_iosf intel_xhci_usb_role_switch intel_pmc_core asus_wireless int3400_thermal pmt_telemetry pmt_class acpi_thermal_rel intel_vsec acpi_pad joydev v4l2loopback_dc(OE) videodev mc loop
 nfnetlink zram lz4hc_compress lz4_compress i915 i2c_algo_bit drm_buddy ttm polyval_clmulni polyval_generic ghash_clmulni_intel drm_display_helper hid_multitouch spi_pxa2xx_platform sha512_ssse3 dw_dmac sha256_ssse3 spi_pxa2xx_core sha1_ssse3 cec i2c_hid_acpi i2c_hid video wmi serio_raw fuse
CPU: 2 UID: 1000 PID: 4470 Comm: VideoDevicePoll Tainted: G        W  OE      6.14.9-300.fc42.x86_64 #1
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 ae ac fa ff 48 89 df 48 83 c4 20 5b 5d 41 5c 41 5e e9 cc 04 02 00 48 89 ee 48 c7 c7 f0 e8 e4 b3 e8 7d 2f cb 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:ffffd2ba46ccfd10 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8b6242027000 RCX: 0000000000000027
RDX: ffff8b658ed21948 RSI: 0000000000000001 RDI: ffff8b658ed21940
RBP: ffffd2ba5a327000 R08: 0000000000000000 R09: ffffd2ba46ccfbb8
R10: ffffffffb49368e8 R11: 00000000ffffdfff R12: ffff8b6241ab1010
R13: ffff8b627d449820 R14: ffff8b62474e1000 R15: 0000000000000000
FS:  00007fc005dc86c0(0000) GS:ffff8b658ed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002ab408f72000 CR3: 0000000290f7a003 CR4: 00000000003726f0
Call Trace:
 <TASK>
 v4l2_loopback_close+0x8b/0xf0 [v4l2loopback_dc]
 v4l2_release+0xd1/0x100 [videodev]
 __fput+0xe3/0x2a0
 __x64_sys_close+0x3c/0x80
 do_syscall_64+0x7b/0x160
 ? __x64_sys_openat+0x62/0xa0
 ? syscall_exit_to_user_mode+0x10/0x210
 ? do_syscall_64+0x87/0x160
 ? put_unused_fd+0x2a/0x70
 ? do_sys_openat2+0x96/0xe0
 ? __x64_sys_openat+0x62/0xa0
 ? syscall_exit_to_user_mode+0x10/0x210
 ? do_syscall_64+0x87/0x160
 ? do_syscall_64+0x87/0x160
 ? do_syscall_64+0x87/0x160
 ? __irq_exit_rcu+0x4c/0xf0
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fc08ef6f48c
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 c0 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 22 99 f8 ff 8b 45 fc c9
RSP: 002b:00007fc005dc73f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000030 RCX: 00007fc08ef6f48c
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000030
RBP: 00007fc005dc7400 R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc0075ef7f0 R15: 00007fc005dc74f0
 </TASK>