Backtrace

WARNING: CPU: 3 PID: 0 at kernel/sched/core.c:2671 ttwu_queue_wakelist+0xb6/0xc0
Modules linked in: uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_usb_audio videobuf2_common videodev snd_usbmidi_lib snd_rawmidi mc uinput rfcomm xt_CHECKSUM nf_conntrack_netlink nfnetlink xt_MASQUERADE xt_conntrack ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_multiport xt_cgroup xt_addrtype xt_mark br_netfilter xt_owner ebtable_filter ip6table_mangle ebtables iptable_mangle ip6table_nat bridge stp llc iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6table_raw iptable_raw ip6table_filter ip6_tables iptable_filter tun overlay cmac bnep sunrpc nls_utf8 hfsplus snd_hda_codec_cirrus snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi intel_rapl_msr snd_hda_intel snd_intel_dspcfg intel_rapl_common btusb btrtl btbcm btintel x86_pkg_temp_thermal intel_powerclamp bluetooth soundwire_intel brcmfmac soundwire_generic_allocation snd_soc_core coretemp snd_compress kvm_intel brcmutil iTCO_wdt snd_pcm_dmaengine soundwire_cadence intel_pmc_bxt
 snd_hda_codec kvm iTCO_vendor_support cfg80211 ecdh_generic mei_hdcp ecc snd_hda_core ac97_bus snd_hwdep irqbypass applesmc rapl snd_seq bcm5974 joydev intel_cstate mmc_core snd_seq_device mei_me apple_mfi_fastcharge pcspkr snd_pcm i2c_i801 mei rfkill lpc_ich i2c_smbus intel_pch_thermal intel_uncore snd_timer thunderbolt snd acpi_als kfifo_buf sbs soundcore sbshc apple_gmux industrialio apple_bl binfmt_misc ip_tables dm_crypt hid_apple hid_logitech_hidpp uas usb_storage hid_logitech_dj i915 i2c_algo_bit drm_kms_helper crct10dif_pclmul crc32_pclmul cec crc32c_intel drm ghash_clmulni_intel xhci_pci xhci_pci_renesas video fuse
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.10.8-100.fc32.x86_64 #1
Hardware name: Apple Inc. MacBookPro11,4/Mac-06F11FD93F0323C5, BIOS MBP114.88Z.0172.B09.1602151732 02/15/2016
RIP: 0010:ttwu_queue_wakelist+0xb6/0xc0
Code: ca 4a 03 04 e5 00 69 49 b9 88 93 98 08 00 00 c7 40 68 01 00 00 00 e8 f9 86 07 00 b8 01 00 00 00 5b 5d 41 5c 41 5d c3 31 c0 c3 <0f> 0b 31 c0 eb f0 0f 1f 40 00 55 48 89 e5 41 57 49 89 f7 41 56 49
RSP: 0000:ffffb4f900164f28 EFLAGS: 00010046
RAX: 0000000000000003 RBX: ffff9a0980cb0000 RCX: ffff9a0cef2c0000
RDX: 0000000000000000 RSI: ffff9a0cef2c0000 RDI: 0000000000000000
RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000100
R10: 0000000000280280 R11: ffffffffb9a06110 R12: 0000000000000003
R13: 0000000000000000 R14: ffff9a0980cb0bc4 R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff9a0cef2c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001a1a10001 CR4: 00000000001706e0
Call Trace:
 <IRQ>
 try_to_wake_up+0x149/0x4d0
 ? rcu_core+0x161/0x2c0
 __do_softirq+0x23c/0x288
 asm_call_irq_on_stack+0x12/0x20
 </IRQ>
 do_softirq_own_stack+0x37/0x40
 irq_exit_rcu+0xc2/0x100
 sysvec_apic_timer_interrupt+0x36/0x80
 asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:mwait_idle+0x57/0x80
Code: 89 d1 65 48 8b 04 25 c0 7b 01 00 0f 01 c8 48 8b 00 a8 08 75 2f e9 07 00 00 00 0f 00 2d 44 c3 43 00 31 c0 48 89 c1 fb 0f 01 c9 <65> 48 8b 04 25 c0 7b 01 00 f0 80 60 02 df c3 0f ae f0 0f ae 38 0f
RSP: 0000:ffffb4f9000b7f00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffb4f9000b7eb8 RDI: 0000884aa7a97b39
RBP: ffff9a0980a3ce00 R08: 0000000000000001 R09: 0000884dfb235c66
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffb9c56460
R13: ffff9a0cef2f5100 R14: 0000000000000000 R15: 0000000000000000
 default_idle_call+0x38/0xc0
 do_idle+0x1e4/0x270
 ? swake_up_locked+0x28/0x50
 cpu_startup_entry+0x19/0x20
 secondary_startup_64_no_verify+0xc2/0xcb