Backtrace

WARNING: CPU: 0 PID: 1144 at kernel/sched/fair.c:3307 update_blocked_averages+0x6cd/0x720
Modules linked in: xt_connmark xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nft_objref nf_conntrack_tftp bridge stp llc 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 ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security rfkill ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter qrtr ns intel_rapl_msr intel_rapl_common snd_hda_codec_generic kvm_intel ledtrig_audio kvm iTCO_wdt snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi joydev intel_pmc_bxt snd_hda_codec irqbypass iTCO_vendor_support snd_hda_core rapl snd_hwdep snd_seq snd_seq_device snd_pcm lpc_ich snd_timer i2c_i801 i2c_smbus snd soundcore virtio_balloon binfmt_misc auth_rpcgss zram ip_tables xfs crct10dif_pclmul crc32_pclmul crc32c_intel qxl drm_ttm_helper ttm drm_kms_helper ghash_clmulni_intel
 serio_raw cec drm virtio_blk virtio_console virtio_net net_failover failover qemu_fw_cfg dm_multipath sunrpc be2iscsi bnx2i cnic uio cxgb4i cxgb4 tls cxgb3i cxgb3 mdio libcxgbi libcxgb qla4xxx iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi pkcs8_key_parser fuse
CPU: 0 PID: 1144 Comm: vpnserver Not tainted 5.14.10-300.fc35.x86_64 #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS ?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.fc31 04/01/2014
RIP: 0010:update_blocked_averages+0x6cd/0x720
Code: c0 3c 5c ac c6 05 ae 8b ff 01 01 e8 19 57 aa 00 0f 0b e9 2b fa ff ff 48 c7 c7 a8 40 5c ac c6 05 90 8b ff 01 01 e8 ff 56 aa 00 <0f> 0b 41 8b 87 38 01 00 00 e9 11 fc ff ff 48 c7 c7 28 3c 5c ac c6
RSP: 0018:ffffb44a015cbae0 EFLAGS: 00010082
RAX: 0000000000000048 RBX: 0000000000000001 RCX: 0000000000000027
RDX: ffff89d79c018a08 RSI: 0000000000000001 RDI: ffff89d79c018a00
RBP: ffff89d79c02b740 R08: 0000000000000000 R09: ffffb44a015cb918
R10: ffffb44a015cb910 R11: ffffffffacf47468 R12: ffff89d7463d5b40
R13: 0000000000000000 R14: ffff89d79c02c000 R15: ffff89d7463d5a00
FS:  00007f17b049b380(0000) GS:ffff89d79c000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e4bc9f0000 CR3: 000000000a9bc003 CR4: 0000000000170ef0
Call Trace:
 newidle_balance+0x18f/0x3d0
 pick_next_task_fair+0x39/0x3b0
 __schedule+0x16b/0x1500
 ? update_curr+0x69/0x1b0
 ? timerqueue_add+0x66/0xb0
 ? enqueue_hrtimer+0x2f/0x70
 ? hrtimer_start_range_ns+0x24b/0x340
 schedule+0x44/0xa0
 futex_wait_queue_me+0xa1/0x100
 futex_wait+0xd8/0x210
 ? __hrtimer_init+0xc0/0xc0
 do_futex+0x196/0xb00
 ? __note_gp_changes+0x178/0x1b0
 ? note_gp_changes+0x67/0x90
 __x64_sys_futex+0x63/0x1a0
 ? switch_fpu_return+0x51/0xc0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f17be34e77a
Code: 24 08 e8 a9 f9 ff ff 4c 8b 54 24 18 45 31 c0 44 89 e2 89 c5 8b 74 24 08 48 8b 7c 24 10 41 b9 ff ff ff ff b8 ca 00 00 00 0f 05 <89> ef 48 89 44 24 08 e8 ea f9 ff ff 48 8b 44 24 08 e9 69 ff ff ff
RSP: 002b:00007f17b049a230 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f17b049a340 RCX: 00007f17be34e77a
RDX: 0000000000000000 RSI: 0000000000000189 RDI: 00007f17a4007ac0
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000ffffffff
R10: 00007f17b049a340 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f17a4007ac0 R14: 0000000000000000 R15: 00007f17a4007a70