cgroup: Unknown subsys name 'perf_event'
cgroup: Unknown subsys name 'net_cls'
Bluetooth: hci2: command 0x0409 tx timeout
Bluetooth: hci5: command 0x0409 tx timeout
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7 at kernel/kthread.c:83 to_kthread kernel/kthread.c:83 [inline]
WARNING: CPU: 1 PID: 7 at kernel/kthread.c:83 kthread_is_per_cpu+0xc4/0xf0 kernel/kthread.c:519
Modules linked in:
CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 5.10.60 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue:  0x0 (events_unbound)
RIP: 0010:to_kthread kernel/kthread.c:83 [inline]
RIP: 0010:kthread_is_per_cpu+0xc4/0xf0 kernel/kthread.c:519
Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 2e 4c 8b 23 41 83 e4 01 e8 c9 73 23 00 44 89 e0 5b 5d 41 5c c3 e8 bc 73 23 00 <0f> 0b eb 88 e8 93 63 4e 00 e9 68 ff ff ff e8 99 63 4e 00 eb 9a 48
RSP: 0018:ffff888008517998 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffff8880474c0000 RCX: ffffffff811bea7c
RDX: ffff8880084f9940 RSI: ffffffff811beaf4 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff85e1f04f
R10: 0000000000000000 R11: ffffffff85e1f05b R12: ffff8880474c00a8
R13: ffff888008517b18 R14: ffff888008517b18 R15: ffff8880474c0000
FS:  0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f371cf426f4 CR3: 0000000004c26000 CR4: 0000000000350ee0
Call Trace:
 can_migrate_task+0x90/0xa00 kernel/sched/fair.c:7572
 detach_tasks kernel/sched/fair.c:7720 [inline]
 load_balance+0x9de/0x27e0 kernel/sched/fair.c:9644
 newidle_balance+0x6e9/0xee0 kernel/sched/fair.c:10616
 pick_next_task_fair+0x48/0xa40 kernel/sched/fair.c:7159
 pick_next_task kernel/sched/core.c:4340 [inline]
 __schedule+0x330/0x1e90 kernel/sched/core.c:4491
 schedule+0xcb/0x270 kernel/sched/core.c:4601
 worker_thread+0x14f/0x1310 kernel/workqueue.c:2437
 kthread+0x38f/0x470 kernel/kthread.c:292
 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296
irq event stamp: 367226
hardirqs last  enabled at (367225): [<ffffffff83d9d3bf>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
hardirqs last  enabled at (367225): [<ffffffff83d9d3bf>] _raw_spin_unlock_irq+0x1f/0x30 kernel/locking/spinlock.c:199
hardirqs last disabled at (367226): [<ffffffff83d8d995>] __schedule+0xfb5/0x1e90 kernel/sched/core.c:4423
softirqs last  enabled at (367136): [<ffffffff81088373>] memcpy include/linux/string.h:399 [inline]
softirqs last  enabled at (367136): [<ffffffff81088373>] fpu__copy+0x173/0x550 arch/x86/kernel/fpu/core.c:241
softirqs last disabled at (367134): [<ffffffff810882a1>] fpu__copy+0xa1/0x550 arch/x86/kernel/fpu/core.c:229
---[ end trace 63de4038b5f7cbf6 ]---

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