Backtrace

WARNING: CPU: 2 PID: 45361 at mm/vmalloc.c:3375 vfree.part.0+0x113/0x260
Modules linked in: wireguard curve25519_x86_64 libcurve25519_generic ip6_udp_tunnel udp_tunnel dummy uinput rfcomm snd_seq_dummy snd_hrtimer binfmt_misc 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 uhid bnep snd_ctl_led snd_soc_skl_hda_dsp snd_soc_intel_sof_board_helpers snd_sof_probes snd_soc_intel_hda_dsp_common snd_hda_codec_realtek snd_hda_codec_generic snd_hda_scodec_component snd_soc_dmic snd_sof_pci_intel_cnl 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 snd_hda_codec_hdmi 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 snd_soc_core intel_uncore_frequency intel_uncore_frequency_common snd_compress intel_tcc_cooling ac97_bus x86_pkg_temp_thermal dell_pc intel_powerclamp snd_pcm_dmaengine platform_profile coretemp snd_hda_intel iwlmvm iTCO_wdt snd_intel_dspcfg intel_pmc_bxt kvm_intel spi_nor vfat fat dell_laptop iTCO_vendor_support mac80211 mtd intel_rapl_msr snd_intel_sdw_acpi mei_pxp kvm mei_hdcp hid_sensor_hub libarc4 snd_hda_codec snd_hda_core snd_hwdep btusb dell_smm_hwmon snd_seq btrtl snd_seq_device irqbypass btintel iwlwifi btbcm uvcvideo rapl dell_wmi dell_smbios btmtk intel_cstate uvc dell_wmi_sysman squashfs videobuf2_vmalloc dcdbas videobuf2_memops intel_uncore videobuf2_v4l2 processor_thermal_device_pci_legacy i2c_i801 pcspkr snd_pcm bluetooth videobuf2_common firmware_attributes_class wmi_bmof dell_wmi_descriptor processor_thermal_device intel_wmi_thunderbolt snd_timer
 processor_thermal_wt_hint cfg80211 snd processor_thermal_rfim spi_intel_pci processor_thermal_rapl i2c_smbus intel_rapl_common soundcore mei_me spi_intel processor_thermal_wt_req mei processor_thermal_power_floor rfkill intel_ishtp_hid idma64 processor_thermal_mbox intel_pch_thermal intel_soc_dts_iosf int3403_thermal int340x_thermal_zone intel_pmc_core pmt_telemetry pmt_class int3400_thermal acpi_thermal_rel intel_hid intel_vsec sparse_keymap acpi_pad acpi_tad joydev v4l2loopback(OE) v4l2loopback_dc(OE) videodev mc loop zram lz4hc_compress lz4_compress i915 i2c_algo_bit drm_buddy ttm drm_display_helper polyval_clmulni polyval_generic ghash_clmulni_intel sha512_ssse3 ucsi_acpi video sha256_ssse3 hid_multitouch intel_ish_ipc sha1_ssse3 typec_ucsi nvme cec typec intel_ishtp i2c_hid_acpi i2c_hid wmi pinctrl_cannonlake nvme_core nvme_keyring nvme_auth serio_raw sunrpc iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi i2c_dev fuse nfnetlink
CPU: 2 UID: 1000 PID: 45361 Comm: VideoDevicePoll Tainted: G           OE       6.15.9-201.fc42.x86_64 #1 PREEMPT(lazy) 
Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
Hardware name: Dell Inc. Inspiron 5490/06JJ34, BIOS 1.24.0 08/10/2023
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 c8 d7 c5 ad e8 6d 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:ffffd51b43777c60 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8d5041a75000 RCX: 0000000000000027
RDX: ffff8d51a491cb88 RSI: 0000000000000001 RDI: ffff8d51a491cb80
RBP: ffffd51b69dd8000 R08: 0000000000000000 R09: ffffd51b43777b08
R10: ffffffffae73bc88 R11: 00000000ffffdfff R12: ffff8d504de2f218
R13: ffff8d507cca3820 R14: ffff8d50520e8c00 R15: 0000000000000000
FS:  00007f0d089fe6c0(0000) GS:ffff8d51f5370000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f21c36660 CR3: 000000012b7e2006 CR4: 00000000003726f0
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
 ? 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
 ? clear_bhb_loop+0x50/0xa0
 ? 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: 0033:0x7f0d91b029cc
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:00007f0d089fd3f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 000000000000003a RCX: 00007f0d91b029cc
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000003a
RBP: 00007f0d089fd400 R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0d09ff46f0 R15: 00007f0d089fd4f0
 </TASK>