Backtrace

WARNING: CPU: 3 PID: 3374 at kernel/rcu/tree_plugin.h:320 rcu_note_context_switch+0x5f1/0x660
Modules linked in: snd_seq_dummy snd_hrtimer 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 rfkill ip_set nf_tables qrtr snd_hda_codec_via snd_hda_codec_hdmi intel_powerclamp snd_hda_codec_generic coretemp kvm_intel snd_hda_intel snd_intel_dspcfg snd_usb_audio snd_intel_sdw_acpi kvm sunrpc snd_hda_codec snd_usbmidi_lib iTCO_wdt ppdev intel_pmc_bxt snd_ump iTCO_vendor_support gpio_ich snd_rawmidi snd_hda_core irqbypass mc intel_cstate snd_hwdep snd_seq snd_seq_device binfmt_misc intel_uncore snd_pcm pcspkr acpi_cpufreq snd_timer i7core_edac lpc_ich i2c_i801 i2c_smbus parport_pc snd soundcore asus_atk0110 parport joydev loop nfnetlink zram nouveau drm_ttm_helper ttm video gpu_sched i2c_algo_bit crc32c_intel sha512_ssse3 drm_gpuvm sha256_ssse3 drm_exec mxm_wmi uas sha1_ssse3 firewire_ohci wmi usb_storage serio_raw firewire_core
 drm_display_helper r8169 realtek cec crc_itu_t ata_generic pata_acpi ip6_tables ip_tables fuse
CPU: 3 PID: 3374 Comm: systemd-coredum Tainted: G      D            6.8.5-301.fc40.x86_64 #1
Hardware name: System manufacturer System Product Name/P7P55-M, BIOS 0312    11/13/2009
RIP: 0010:rcu_note_context_switch+0x5f1/0x660
Code: 00 00 00 00 0f 85 cb fc ff ff 49 89 8c 24 a0 00 00 00 e9 be fc ff ff 48 c7 c7 90 5c b2 a6 c6 05 22 c2 4f 02 01 e8 ef f2 f3 ff <0f> 0b e9 63 fa ff ff 49 83 bc 24 98 00 00 00 00 75 bf e9 70 fe ff
RSP: 0018:ffffb179c501fc98 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff899b3baf5680 RCX: 0000000000000027
RDX: ffff899b3bae18c8 RSI: 0000000000000001 RDI: ffff899b3bae18c0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb179c501fb08
R10: ffffffffa7516808 R11: 0000000000000003 R12: ffffb179c501fde0
R13: ffff899a02720000 R14: ffff899b054ef430 R15: ffff899a02720cc0
FS:  0000000000000000(0000) GS:ffff899b3bac0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffff07bc4dcfa74 CR3: 00000000a7422000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ? rcu_note_context_switch+0x5f1/0x660
 ? __warn+0x81/0x130
 ? rcu_note_context_switch+0x5f1/0x660
 ? report_bug+0x16f/0x1a0
 ? handle_bug+0x3c/0x80
 ? exc_invalid_op+0x17/0x70
 ? asm_exc_invalid_op+0x1a/0x20
 ? rcu_note_context_switch+0x5f1/0x660
 ? rcu_note_context_switch+0x5f1/0x660
 __schedule+0xbe/0x1530
 ? try_to_wake_up+0x233/0x670
 ? __queue_work.part.0+0x1a5/0x3a0
 schedule+0x32/0xd0
 synchronize_rcu_expedited+0x330/0x450
 ? __pfx_wait_rcu_exp_gp+0x10/0x10
 ? __pfx_autoremove_wake_function+0x10/0x10
 namespace_unlock+0xd0/0x1a0
 put_mnt_ns+0x6d/0x90
 free_nsproxy+0x1b/0x1b0
 do_exit+0x355/0xaf0
 make_task_dead+0x83/0x170
 rewind_stack_and_make_dead+0x17/0x20
RIP: 0033:0x7f3d19f1dcc1
Code: Unable to access opcode bytes at 0x7f3d19f1dc97.
RSP: 002b:00007ffedea52048 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f3d19cb2010 RCX: 00007f3d19f1dcc1
RDX: 0000000000020000 RSI: 00007f3d19cb2010 RDI: 0000000000000006
RBP: 00007ffedea52080 R08: 0000000000000000 R09: 00007f3d19660010
R10: 00007f3d19660014 R11: 0000000000000246 R12: 0000000000000006
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000020000
 </TASK>